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qxf2_public_repos/sample-lambda-heart-rate/static
|
qxf2_public_repos/sample-lambda-heart-rate/static/css/sample_lambda_style.css
|
/*Stylesheet for Sample Lambda heart rate application*/
body {
padding-top: 40px;
font-size: 16px;
font-family: "Open Sans",serif;
}
h1 {
font-family: "Abel", Arial, sans-serif;
font-weight: 400;
font-size: 40px;
color: #000000;
line-height: 1.0;
}
h2 {
font-family: "Abel", Arial, sans-serif;
}
h3 {
font-family: "Abel", Arial, sans-serif;
}
p {
line-height: 2.0;
}
li {
line-height: 2.0;
}
/* Override B3 .panel adding a subtly transparent background */
.panel {
background-color: rgba(255, 255, 255, 0.9);
}
.toppy {
padding-top: 70px;
}
.comment {
/* Src: http://codepen.io/martinwolf/pen/qlFdp */
display: block; /* Fallback for non-webkit */
display: -webkit-box;
margin: 0 auto;
-webkit-line-clamp: 2;
-webkit-box-orient: vertical;
overflow: hidden;
text-overflow: ellipsis;
}
.p_result{
line-height: 1.8;
}
.margin-base-vertical {
margin: 40px 0;
}
.wor_copyright {
font-family: "Abel", Arial, sans-serif;
font-size: 12px;
}
/*Add vertical space above divs*/
.top-space-5 {
margin-top:5px;
}
.top-space-10 {
margin-top:10px;
}
.top-space {
margin-top:10px;
}
.top-space-15 {
margin-top:15px;
}
.top-space-20 {
margin-top:20px;
}
.top-space-25 {
margin-top:25px;
}
.top-space-30 {
margin-top:30px;
}
.top-space-40 {
margin-top:40px;
}
.top-space-50 {
margin-top:50px;
}
/*Logo*/
img.logo{
max-height: 100px;
max-width: 250px;
}
grey-text {
color: #7e7e7e;
margin-top: 5px;
}
.toppy-10 {
padding-top: 10px;
}
.toppy-20 {
padding-top: 20px;
}
.toppy-30 {
padding-top: 30px;
}
| 0 |
qxf2_public_repos/sample-lambda-heart-rate
|
qxf2_public_repos/sample-lambda-heart-rate/templates/sample_lambda.html
|
<!doctype html>
<head>
<title>sample_lambda_app</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<!-- Bootstrap -->
<link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.0/css/bootstrap.min.css" rel="stylesheet" />
<link href="https://netdna.bootstrapcdn.com/font-awesome/3.2.1/css/font-awesome.css" rel="stylesheet" />
<link href="https://fonts.googleapis.com/css?family=Abel|Open+Sans:400,600" rel="stylesheet">
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<!-- sample lambda stylesheet -->
<link href="/static/css/sample_lambda_style.css" rel="stylesheet">
</head>
<body>
<div class="container toppy">
<div class="row">
<div class="col-md-6 col-md-offset-3">
<h1 class="margin-base-vertical text-center">The target heart rate range calculator!</h1>
<p class="input-group">
<span class="input-group-addon">
<label>Name:</label>
</span>
<input type="text" id="name" class="form-control input-lg" name="name" placeholder="Enter your name here" required="required" />
</p>
<p class="input-group">
<span class="input-group-addon">
<label>Age:</label>
</span>
<input type="text" id="age" class="form-control input-lg" name="age" placeholder="Enter your age here" required="required">
</p>
<p class="text-center top-space-40">
<button type="submit" class="btn btn-success btn-lg" id="range">Calculate THR Range!</button>
</p>
</div>
</div>
<div class="row">
<div class="col-md-6 col-md-offset-3">
<p class="text-center top-space-20" id="resultDiv">
</p>
</div>
</div>
</div>
<div class="col-md-12">
<div class="row-fluid">
<!--Copyright-->
<p class="margin-base-vertical text-center wor_copyright">
© <a href="https://www.qxf2.com/?utm_source=sample-lambda-heart-rate&utm_medium=click&utm_campaign=Sample%20lambda%20heart%20rate">Qxf2 Services</a> 2013 -
<script>document.write(new Date().getFullYear())</script>
</p>
</div>
<!--Copyright-->
</div>
<script>
$("document").ready(function () {
$("#range").click(function () {
var name = $('#name').val();
var age = $('#age').val();
var letters = /^[a-zA-Z ]*$/;
if (name == '')
{ $("#name").css('border', 'solid 2px red');
$("#resultDiv").text('Please enter your name')
$("#resultDiv").css('color', 'red'); }
else if (!(letters.test(name)))
{ $("#name").css('border', 'solid 2px red');
$("#resultDiv").text('Please enter only characters')
$("#resultDiv").css('color', 'red'); }
else {
$("#name").css('border', 'solid 1px #ccc');
var callDetails = {
type: 'POST',
url: '/calculate_heartrate_range',
data: {
'name': name
}
};
}
if (((name != '') && (letters.test(name))) && (age != parseInt(age, 10)))
{ $("#age").css('border', 'solid 2px red');
$("#resultDiv").text('Please enter your age')
$("#resultDiv").css('color', 'red'); }
else {
$("#age").css('border', 'solid 1px #ccc');
var callDetails = {
type: 'POST',
url: '/calculate_heartrate_range',
data: {
'age': age
}
};
}
$.ajax(callDetails).done(function (calculate_heartrate_range) {
if (name != '' && (letters.test(name)) && age != ''){
$("#resultDiv").css('color', 'black');
$("#resultDiv").text(''+ name.charAt(0).toUpperCase() + name.slice(1) + ', you should maintain your target heart rate between ' + calculate_heartrate_range['low'] + ' and ' + calculate_heartrate_range['high'] + ' during exercise. Aim to be at your target heart rate for at least 15 to 20 minutes.');
}
});
});
});
</script>
</body>
</html>
| 0 |
qxf2_public_repos/sample-lambda-heart-rate
|
qxf2_public_repos/sample-lambda-heart-rate/conf/credentials.py
|
"""
This config file would have the credentials
"""
#aws
aws_access_key_id= 'Enter the AWS access key here'
aws_secret_access_key='Enter the AWS secret key here'
region='Enter the region'
#lambda function name
lambda_function_name = 'Enter your lambda function name here'
| 0 |
qxf2_public_repos
|
qxf2_public_repos/rust-motw-fake/LICENSE
|
MIT License
Copyright (c) 2023 sravantit25
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
| 0 |
qxf2_public_repos
|
qxf2_public_repos/rust-motw-fake/README.md
|
# rust-fake-crate-examples
This repository contains a collection of Rust code examples demonstrating the use of the `fake` crate for generating fake data.
## Introduction
The fake crate is useful for creating mock data for different types of data without writing a lot of code. For instance, if you wish to evaluate your program’s performance with different inputs or need illustrative examples, this crate allows you to generate authentic-looking data. It uses the rand crate as a dependency and implements the Dummy and Fake traits for many common types, as well as providing the faker module with various helpers for generating fake values in different formats and locales. It also provides macros and functions for creating collections and custom types with fake values. Examples showcasing all these features are provided in this repo.
## Installation
1. Make sure you have Rust installed. If not, you can install it using [rustup](https://rustup.rs/).
2. Clone this repository to your local machine:
```bash
git clone https://github.com/qxf2/rust-fake-crate-examples.git
```
## Usage
1. Navigate to the project directory
```bash
cd rmotw_fake/
```
2. Run the required code example:
```bash
cargo run --bin <name_of_file>
```
Eg:
```bash
cargo run --bin fake_trait_usage
```
## Examples
The examples provided here use a social media app as a context, showcasing the generation of fake data that can help test the features of the app. Designed to be simple and get you started, these examples illustrate how to generate synthetic data using the various features provided by the fake crate.
Here is how to run one example and what the output looks like.
Example1: Basic Usage of Fake Trait:
The fake crate in Rust offers a generic trait named Fake, allowing users to implement it for various types (Eg: string-based data, numeric data etc.). By implementing the Fake trait for a specific type, we can generate random or fake instances of that type. This example shows how we can do that.
```bash
rmotw_fake$ cargo run --bin fake_trait_usage
Compiling rmotw_fake v0.1.0
Running `target/debug/fake_trait_usage`
Likes: 576
Shares: 69
Post: "zIHz14dHooiwpPh9w0DeWLTLiRkEvYtSdVKerbW5fm9h"
Caption: "tRiadlcjP"
Category: "normal"
```
| 0 |
qxf2_public_repos/rust-motw-fake
|
qxf2_public_repos/rust-motw-fake/rmotw_fake/Cargo.toml
|
[package]
name = "rmotw_fake"
version = "0.1.0"
edition = "2021"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
chrono = "0.4.31"
fake = { version = "2.9", features = ["derive", "uuid", "chrono"] }
locale = "0.2.2"
rand = "0.8.5"
uuid = "1.5.0"
| 0 |
qxf2_public_repos/rust-motw-fake/rmotw_fake/src
|
qxf2_public_repos/rust-motw-fake/rmotw_fake/src/bin/faker_module_usage.rs
|
/*
Example program showing the the usage of 'faker' module to generate fake data
for specific formats and locales.
It simulates a social media platform that offers personalized content
recommendation to its users based on their profile.
*/
use fake::faker::address::raw::CityName;
use fake::faker::internet::raw::FreeEmail;
use fake::faker::phone_number::raw::CellNumber;
use fake::uuid::UUIDv1;
use fake::{locales::{EN, FR_FR}, Fake};
use uuid::Uuid;
// UserProfile struct represents a profile of a user
#[derive(Debug)]
pub struct UserProfile {
pub user_id: Uuid,
pub email: String,
pub city: String,
pub phone_number: String,
pub city_category: String,
pub recommended_content: String,
}
// Function to generate a fake user profile
pub fn generate_fake_user_profile() -> UserProfile {
let user_id: Uuid = UUIDv1.fake();
let email: String = FreeEmail(EN).fake();
let city: String = CityName(FR_FR).fake();
let phone_number: String = CellNumber(EN).fake();
// Categorize the city and recommend content based on the category
let (city_category, recommended_content) = categorize_city_and_recommend_content(&city);
// Return a UserProfile with the generated data
UserProfile {
user_id,
email,
city,
phone_number,
city_category,
recommended_content,
}
}
// Function to categorize a city and recommend content based on the category
pub fn categorize_city_and_recommend_content(city: &str) -> (String, String) {
let city_category = if city.contains("Paris") || city.contains("Lyon") || city.contains("Marseille") {
"major".to_string()
} else {
"smaller".to_string()
};
// Recommend content based on the city category
let recommended_content = match city_category.as_str() {
"major" => "global news and events".to_string(),
"smaller" => "local news and events".to_string(),
_ => "no content available".to_string(),
};
// Return the city category and the recommended content
(city_category, recommended_content)
}
fn main() {
// Generate a fake user profile.
let user_profile = generate_fake_user_profile();
// Print the information of the user profile
println!(
"User ID: {}\nEmail: {}\nCity: {}\nPhone Number: {}\nCity Category: {}\nRecommended Content: {}",
user_profile.user_id,
user_profile.email,
user_profile.city,
user_profile.phone_number,
user_profile.city_category,
user_profile.recommended_content
);
}
| 0 |
qxf2_public_repos/rust-motw-fake/rmotw_fake/src
|
qxf2_public_repos/rust-motw-fake/rmotw_fake/src/bin/fake_trait_usage.rs
|
/*
Example program showing the basic usage of generating fake data using Fake Trait.
It generates fake data related to a social media platform.
For the sake of simplicity, this example utilizes tuple of values.
However, in a real-world scenario, a struct would typically be used.
*/
use fake::Fake;
fn generate_fake_social_media_data() -> (u32, u16, String, String) {
let likes_count = (1..1000).fake::<u32>();
let shares_count = (1..500).fake::<u16>();
let post_text = (20..50).fake::<String>();
let caption_text = (5..15).fake::<String>();
(likes_count, shares_count, post_text, caption_text)
}
// An example function that categorizes a post based on the number of likes it has.
fn categorize_post(likes_count: u32) -> String {
if likes_count >= 800 {
"popular".to_string()
} else if likes_count >= 500 {
"average".to_string()
} else {
"normal".to_string()
}
}
// Generate fake social media data and categorize the post based on the number of likes.
fn main() {
let (likes_count, shares_count, post_text, caption_text) = generate_fake_social_media_data();
let post_category = categorize_post(likes_count);
println!("Likes: {}\nShares: {}\nPost: {:?}\nCaption: {:?}\nCategory: {:?}",
likes_count, shares_count, post_text, caption_text, post_category);
}
| 0 |
qxf2_public_repos/rust-motw-fake/rmotw_fake/src
|
qxf2_public_repos/rust-motw-fake/rmotw_fake/src/bin/collections_usage.rs
|
/*
Example program to demonstrate the use of Rust collections to generate fake data.
It uses an example to create a double ended queue to manage
a list of authors and posts associated with them.
*/
use fake::{self, Dummy};
use std::collections::VecDeque;
use fake::faker::lorem::en::Sentence;
use fake::faker::name::en::Name;
// Define a 'Post' struct with content and author fields that will be filled with fake content
#[derive(Debug, Dummy)]
pub struct Post {
#[dummy(faker = "Sentence(5..10)")]
content: String,
#[dummy(faker = "Name()")]
author: String,
}
// Function to filter out posts shorter than certain length
fn filter_posts(posts: VecDeque<Post>, min_length: usize) -> VecDeque<Post> {
posts.into_iter().filter(|post| post.content.len() >= min_length).collect()
}
fn main() {
// Generate a VecDeque of fake 'Post' objects
let posts: VecDeque<Post> = fake::vec_deque![Post; 5];
println!("Generated posts:");
for post in &posts {
println!(" - Content: {}\n Author: {}", post.content, post.author);
}
// Filter out posts that are shorter than a certain length
let min_length = 30;
let filtered_posts = filter_posts(posts, min_length);
println!("\nPosts after filtering:");
for post in &filtered_posts {
println!(" - Content: {}\n Author: {}", post.content, post.author);
}
}
| 0 |
qxf2_public_repos/rust-motw-fake/rmotw_fake/src
|
qxf2_public_repos/rust-motw-fake/rmotw_fake/src/bin/optional_struct_usage.rs
|
//Example program that shows how to use optional struct while generating fake data
use fake::{Dummy, Fake, Faker};
use fake::faker::name::en::Name;
#[derive(Debug, Dummy)]
pub struct Profile {
#[dummy(faker = "Name()")]
pub name: String,
#[dummy(faker = "0..=80")]
pub age: Option<u64>,
#[dummy(faker = "0..=200")]
pub following: Option<u64>,
#[dummy(expr = "Some((0..=200).fake())")]
pub followers: Option<u64>,
#[dummy(faker = "0..=200")]
pub posts: Option<Option<u64>>,
}
pub fn print_profile(profile: Profile) {
println!("Profile {{\nname: \"{}\",\nage: {:?},\nfollowing: {:?},\nfollowers: {:?},\nposts: {:?}\n}}",
profile.name, profile.age, profile.following, profile.followers, profile.posts);
}
fn main() {
let profile: Profile = Faker.fake();
print_profile(profile)
}
| 0 |
qxf2_public_repos/rust-motw-fake/rmotw_fake/src
|
qxf2_public_repos/rust-motw-fake/rmotw_fake/src/bin/dummy_trait_usage.rs
|
/*
Example program demonstrates the usage of the 'Dummy' trait to generate fake data.
It defines a social media structure with posts and comments and populates these with
realistic-looking test data.
*/
use fake::faker::boolean::en::Boolean;
use fake::faker::name::en::Name;
use fake::Dummy;
use fake::Faker;
#[derive(Debug, Dummy)]
pub enum PostStatus {
Published,
Draft,
}
// SocialMediaPost is a struct representing a post on social media.
#[derive(Debug, Dummy)]
pub struct SocialMediaPost {
#[dummy(faker = "1000..")]
pub post_id: usize,
#[dummy(faker = "Name()")]
pub author: String,
#[dummy(faker = "(Faker, 3..5)")]
pub comments: Vec<Comment>,
#[dummy(faker = "Boolean(80)")]
pub is_public: bool,
pub status: PostStatus,
}
#[derive(Debug, Dummy)]
pub struct Comment {
#[dummy(faker = "1..100")]
pub comment_id: usize,
pub text: String,
#[dummy(faker = "Name()")]
pub commenter: String,
}
// function to generate fake posts by accepting number of posts to be generated
pub fn generate_fake_post(num_posts: usize) -> Vec<SocialMediaPost> {
fake::vec![SocialMediaPost; num_posts]
}
pub fn main() {
let posts = generate_fake_post(2);
println!("{:#?}", posts);
}
| 0 |
qxf2_public_repos/rust-motw-fake/rmotw_fake/src
|
qxf2_public_repos/rust-motw-fake/rmotw_fake/src/bin/seed_usage.rs
|
//Example to show how seed works in 'fake' crate
use fake::{Dummy, Faker, Fake};
use fake::faker::name::en::Name;
use fake::faker::address::en::StreetName;
use fake::faker::phone_number::en::PhoneNumber;
use fake::faker::internet::en::SafeEmail;
use fake::faker::company::en::CompanyName;
use rand::rngs::StdRng;
use rand::SeedableRng;
#[derive(Debug, Dummy)]
pub struct Profile {
#[dummy(faker = "Name()")]
pub name: String,
#[dummy(faker = "18..80")]
pub age: usize,
#[dummy(faker = "StreetName()")]
pub address: String,
#[dummy(faker = "PhoneNumber()")]
pub phone_number: String,
#[dummy(faker = "SafeEmail()")]
pub email: String,
#[dummy(faker = "CompanyName()")]
pub company: String,
}
fn dummy_profile(rng: &mut StdRng) {
let profile: Profile = Faker.fake_with_rng(rng);
let output = format!(
"Name: {}\nAge: {}\nAddress: {}\nPhone Number: {}\nEmail: {}\nCompany: {}\n",
profile.name, profile.age, profile.address, profile.phone_number, profile.email, profile.company
);
println!("{}", output);
}
fn main() {
let seed = [
0, 0, 0, 0, 0, 0, 0, 0, 3, 1, 0, 0, 2, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0,
];
let mut rng = StdRng::from_seed(seed);
for _ in 0..2 {
dummy_profile(&mut rng);
}
}
| 0 |
qxf2_public_repos
|
qxf2_public_repos/social-media-dashboard/get-stats.py
|
import sqlite3
import requests
import twitter
from mailchimp3 import MailChimp
from datetime import datetime
from conf import credentials_conf as conf
client = MailChimp(mc_api=conf.MC_API, mc_user=conf.MC_USER)
api = twitter.Api(consumer_key=conf.CONSUMER_KEY,
consumer_secret=conf.CONSUMER_SECRET,
access_token_key= conf.ACCESS_TOKEN_KEY,
access_token_secret=conf.ACCESS_TOKEN_SECRET)
def get_docker_pulls():
response = requests.get(conf.DOCKER_API_URL)
jsonResponse = response.json()
return jsonResponse['pull_count']
def get_github_stats():
headers = {'Accept': 'application/vnd.github.scarlet-witch-preview+json'}
response = requests.get(conf.GITHUB_API_URL)
jsonResponse = response.json()
forks = jsonResponse['forks']
stars = jsonResponse['stargazers_count']
subscribers = jsonResponse['subscribers_count']
return forks,stars,subscribers
def get_blog_post_stats():
response = requests.get(conf.BLOGPOST_API_URL)
return response.headers['X-WP-Total']
def get_twitter_followers():
try :
followers = api.GetFollowers(screen_name=conf.SCREEN_NAME)
following = api.GetFriends(screen_name=conf.SCREEN_NAME)
return {'followers':len(followers),'following':len(following)}
except:
followers = 500
following = 300
return {'followers':followers,'following':following}
def get_all_campaigns():
campaigns_dict = client.campaigns.all(get_all=True)
campaigns_list = campaigns_dict['campaigns']
campaigns_count = 1
for campaign in campaigns_list:
if 'The Informed' in campaign['settings']['title']:
campaigns_count +=1
subscriber_dict = client.lists.members.all(conf.SUBSCRIBER_LIST_ID, get_all=True)
subscriber_count = 0
for subscriber in subscriber_dict['members']:
if subscriber['status'] == 'subscribed':
subscriber_count +=1
return campaigns_count,subscriber_count
if __name__ == "__main__":
# datetime object containing current date and time
now = datetime.now()
dt_string = now.strftime("%d/%m/%Y %H:%M:%S")
pull_count = get_docker_pulls()
blog_post_count = get_blog_post_stats()
github_forks,stars,subscribers = get_github_stats()
twitter_stats = get_twitter_followers()
campaigns_count,subscribers_count = get_all_campaigns()
conn = sqlite3.connect(conf.DB_NAME)
c = conn.cursor()
c.execute('''CREATE TABLE if not exists stats(
recorddate text,
follower integer,
following integer,
gforks integer,
gsubscriber integer,
gstars integer,
newsletter integer,
nsubscriber integer,
blog integer,
docker integer,
id INTEGER PRIMARY KEY AUTOINCREMENT)''')
sql = "insert into stats (recorddate,follower,following,gforks,gsubscriber,gstars,newsletter,nsubscriber,blog,docker) values (?,?,?,?,?,?,?,?,?,?);"
data = (dt_string,twitter_stats['followers'],twitter_stats['following'],github_forks,subscribers,stars,campaigns_count,subscribers_count,blog_post_count,pull_count)
c.execute(sql, data)
#c.execute("INSERT into stats VALUES(?,?,?,?,?,?,?,?,?,?)",(dt_string,twitter_stats['followers'],twitter_stats['following'],github_forks,subscribers,stars,campaigns_count,subscribers_count,blog_post_count,pull_count))
conn.commit()
c.execute("SELECT * FROM stats ORDER BY id DESC LIMIT 1")
result = c.fetchone()
print(result)
conn.close()
| 0 |
qxf2_public_repos
|
qxf2_public_repos/social-media-dashboard/LICENSE
|
MIT License
Copyright (c) 2020 rohanj-qxf2
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
| 0 |
qxf2_public_repos
|
qxf2_public_repos/social-media-dashboard/requirements.txt
|
certifi==2020.4.5.1
chardet==3.0.4
click==7.1.2
Flask==1.1.2
future==0.18.2
idna==2.9
itsdangerous==1.1.0
Jinja2==2.11.2
mailchimp3==3.0.14
MarkupSafe==1.1.1
oauthlib==3.1.0
python-twitter==3.5
requests==2.23.0
requests-oauthlib==1.3.0
urllib3==1.25.9
Werkzeug==1.0.1
| 0 |
qxf2_public_repos
|
qxf2_public_repos/social-media-dashboard/README.md
|
# social-media-dashboard
Single page dashboard to display all social media stats
pip install mailchimp3
pip install python-twitter
pip install requests
| 0 |
qxf2_public_repos
|
qxf2_public_repos/social-media-dashboard/dashboard.py
|
from flask import Flask, render_template
import requests,json
import sqlite3
from conf import credentials_conf as conf
app = Flask(__name__)
@app.route('/')
def home():
conn = sqlite3.connect(conf.DB_NAME)
c = conn.cursor()
c.execute("SELECT * FROM stats ORDER BY id DESC LIMIT 1")
result = c.fetchone()
recorddate = result[0]
followers = result[1]
following = result[2]
github_forks = result[3]
github_subscribers = result[4]
github_stars = result[5]
campaigns_count = result[6]
subscriber_count = result[7]
blog_post_count = result[8]
docker_pull = result[9]
conn.close()
return render_template('index.html',recorddate=recorddate,docker_pull=docker_pull,blog_post_count=blog_post_count,github_forks=github_forks,github_stars=github_stars,github_subscribers=github_subscribers,followers=followers,following=following,campaigns_count=campaigns_count,subscribers_count=subscriber_count)
if __name__ == '__main__':
app.run(host='0.0.0.0')
| 0 |
qxf2_public_repos/social-media-dashboard/static
|
qxf2_public_repos/social-media-dashboard/static/styles/mainpage.css
|
body{
background:#eee;
margin-top:20px;
}
.rounded {
-webkit-border-radius: 3px !important;
-moz-border-radius: 3px !important;
border-radius: 3px !important;
}
.mini-stat {
padding: 15px;
margin-bottom: 20px;
}
.mini-stat-icon {
width: 60px;
height: 60px;
display: inline-block;
line-height: 60px;
text-align: center;
font-size: 30px;
background: none repeat scroll 0% 0% #EEE;
border-radius: 100%;
float: left;
margin-right: 10px;
color: #FFF;
}
.mini-stat-info {
font-size: 12px;
padding-top: 2px;
}
span, p {
color: white;
}
.mini-stat-info span {
display: block;
font-size: 30px;
font-weight: 600;
margin-bottom: 5px;
margin-top: 7px;
}
/* ================ colors =====================*/
.bg-docker {
background-color: #3b5998 !important;
border: 1px solid #3b5998;
color: white;
}
.fg-docker {
color: #3b5998 !important;
}
.bg-wordpress {
background-color: grey !important;
border: 1px solid grey;
color: white;
}
.fg-wordpress {
color: grey !important;
}
.bg-twitter {
background-color: #3b5998 !important;
border: 1px solid #3b5998;
color: white;
}
.fg-twitter {
color: #00a0d1 !important;
}
.bg-googleplus {
background-color: #db4a39 !important;
border: 1px solid #db4a39;
color: white;
}
.fg-googleplus {
color: #db4a39 !important;
}
.bg-bitbucket {
background-color: #205081 !important;
border: 1px solid #205081;
color: white;
}
.fg-bitbucket {
color: #205081 !important;
}
.banner-brown {
color:rgb(136,0,0);
display: inline;
}
.text-center{
text-align: center;
}
.top-space-15{
margin-top: 15px;
}
.top-space-5{
margin-top: 5px;
}
img.logo{
max-height: 100px;
max-width: 100px;
}
.col-md-12{
width: 100%;
padding-bottom: 10px;
}
.col-md-2{
float: left;
}
| 0 |
qxf2_public_repos/social-media-dashboard
|
qxf2_public_repos/social-media-dashboard/templates/index.html
|
<html>
<head>
<link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css" rel="stylesheet">
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.8.1/css/all.css" integrity="sha384-50oBUHEmvpQ+1lW4y57PTFmhCaXp0ML5d60M1M7uH2+nqUivzIebhndOJK28anvf" crossorigin="anonymous">
<link rel= "stylesheet" type= "text/css" href= "{{ url_for('static',filename='styles/mainpage.css') }}">
</head>
<body>
<div class="row col-md-12">
<div class="col-md-2 top-space-5">
<a href="/"><img src="/static/qxf2_logo.png" class="img-responsive logo col-md-12" alt="Qxf2 Services"></a>
</div>
<div class="col-md-8 top-space-15 text-center">
<h1 class="banner-brown text-center">Qxf2 Social Media Dashboard</h1>
<h3>Last updated {{recorddate}}</h3>
</div>
</div>
<div class="container bootstrap snippet">
<div class="row">
<div class="col-md-3 col-sm-6 col-xs-12">
<div class="mini-stat clearfix bg-docker rounded">
<span class="mini-stat-icon"><i class='fab fa-docker' style='font-size:48px;color:blue'></i></span>
<div class="mini-stat-info">
<span>{{docker_pull}}</span>
Docker Pulls
</div>
</div>
</div>
<div class="col-md-3 col-sm-6 col-xs-12">
<div class="mini-stat clearfix bg-wordpress rounded">
<span class="mini-stat-icon"><i class="fab fa-wordpress" style='font-size:48px;color:black'></i></span>
<div class="mini-stat-info">
<span>{{blog_post_count}}</span>
Total published blogs
</div>
</div>
</div>
<div class="col-md-3 col-sm-6 col-xs-12">
<div class="mini-stat clearfix bg-googleplus rounded">
<span class="mini-stat-icon"><i class="fab fa-github fg-googleplus"></i></span>
<div class="mini-stat-info ">
<span style="display: inline-block;">{{github_forks}} <br>Forks</span>
<span style="display: inline-block;">{{github_stars}} <br>Stars</span>
<span style="display: inline-block;">{{github_subscribers}} <br>Watch</span>
</div>
</div>
</div>
<div class="col-lg-3 col-md-3 col-sm-6 col-xs-12">
<div class="mini-stat clearfix bg-bitbucket rounded">
<span class="mini-stat-icon"><i class="fab fa-mailchimp fg-bitbucket" style='font-size:48px;color:blue'></i></span>
<div class="mini-stat-info">
<span style="display: inline-block;">{{campaigns_count}} <br>Newsletters Sent</span>
<span style="display: inline-block;">{{subscribers_count}} <br>Active Subscriber</span>
</div>
</div>
</div>
<div class="col-lg-3 col-md-3 col-sm-6 col-xs-12">
<div class="mini-stat clearfix bg-bitbucket rounded">
<span class="mini-stat-icon"><i class="fab fa-twitter fg-bitbucket" style='font-size:48px;color:purple'></i></span>
<div class="mini-stat-info">
<span style="display:inline-block;text-align: left;">{{followers}} <br/>Followers</span>
<span style="display:inline-block;">{{following}} <br/> Following</span>
</div>
</div>
</div>
</div>
</div>
</body>
</html>
| 0 |
qxf2_public_repos/social-media-dashboard
|
qxf2_public_repos/social-media-dashboard/conf/credentials_conf.py
|
"""
Configuration file for all access keys and db config
"""
## Mailchimp ##
MC_API = ''
MC_USER = ''
SUBSCRIBER_LIST_ID = ''
## Twitter ##
CONSUMER_KEY = ''
CONSUMER_SECRET = ''
ACCESS_TOKEN_KEY = ''
ACCESS_TOKEN_SECRET = ''
SCREEN_NAME = 'Qxf21'
## Docker ##
DOCKER_API_URL = 'https://hub.docker.com/v2/repositories/qxf2rohand/qxf2_pom_essentials/'
## Git Hub ##
GITHUB_API_URL = 'https://api.github.com/repos/qxf2/qxf2-page-object-model'
## Blogs(Wordpress) ##
BLOGPOST_API_URL ='https://qxf2.com/blog/wp-json/wp/v2/posts'
## DB CONFIG ##
DB_NAME = 'social-media-dashboard.db'
| 0 |
qxf2_public_repos
|
qxf2_public_repos/rust-motw-regex/Cargo.toml
|
[package]
name = "rust-motw-regex"
version = "0.1.0"
edition = "2021"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
regex = "1.10.2"
ansi_term = "0.12.1"
| 0 |
qxf2_public_repos
|
qxf2_public_repos/rust-motw-regex/LICENSE
|
MIT License
Copyright (c) 2023 Raghava
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
| 0 |
qxf2_public_repos
|
qxf2_public_repos/rust-motw-regex/README.md
|
# rust-motw-regex
This repo provides examples of the Regex crate.
---
Command to run the examples:
---
`cargo run --bin <filename>`
For Example:
`cargo run --bin regex_splitn_text`
| 0 |
qxf2_public_repos/rust-motw-regex/src
|
qxf2_public_repos/rust-motw-regex/src/bin/regex_capture_len_of_pattern.rs
|
/*
captures_len: returns the number of capturing groups in a regular expression pattern.
The below program uses capture len to get the count to verify the structure of
captured data and ensure it matches the expected format.
*/
use regex::Regex;
fn capture_info_from_log_entry(log_entries: Vec<&str>) -> Vec<Result<(String, String, String), String>> {
// Define a regex pattern to capture timestamp, log level, and message
let pattern = r"\[(\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2})\] \[([A-Z,a-z]+)\] (.+)";
let re = match Regex::new(pattern) {
Ok(re) => re,
Err(_) => return vec![Err("Invalid regex pattern".to_string()); log_entries.len()],
};
log_entries
.iter()
.map(|log_entry| {
// Count the number of capture groups
let captures_len = re.captures_len();
match captures_len {
4 => {
if let Some(captures) = re.captures(log_entry) {
let timestamp = captures.get(1).map(|m| m.as_str().to_string());
let log_level = captures.get(2).map(|m| m.as_str().to_string());
let message = captures.get(3).map(|m| m.as_str().to_string());
match (timestamp, log_level, message) {
(Some(timestamp), Some(log_level), Some(message)) => {
Ok((timestamp, log_level, message))
},
_ => Err("No match found".to_string())
}
} else {
Err("Expected 3 capture groups".to_string())
}
},
_ => Err("Invalid regex pattern. Expected 3 capture groups.".to_string()),
}
})
.collect()
}
fn main() {
// Sample log entries
let log_entries = vec![
"[2023-10-31 15:23:45] [ERROR] *370 connect() failed (111: Unknown error) while connecting to upstream, client: 135.125.246.189, server: _, request: \"GET /.env HTTP/1.1\", upstream: \"http://127.0.0.1:5000/.env\", host: \"18.118.196.200\"",
"[2023-10-31 15:30:00] [INFO] Application started successfully",
"[2023-10-31 15:40:22] [WARNING] Unrecognized log entry format",
"[2023-01-01 00:00:00] [info] ",
" [error] some text",
" hi"
// Add more log entries for testing
];
let results = capture_info_from_log_entry(log_entries);
for (index, result) in results.iter().enumerate() {
match result {
Ok((timestamp, log_level, message)) => {
println!("Log Entry {}: ", index + 1);
println!("Timestamp: {}", timestamp);
println!("Log Level: {}", log_level);
println!("Message: {}", message);
println!();
},
Err(err) => {
println!("Error in Log Entry {}: {}", index + 1, err);
println!();
}
}
}
}
| 0 |
qxf2_public_repos/rust-motw-regex/src
|
qxf2_public_repos/rust-motw-regex/src/bin/regex_capture_iter_ip_validation.rs
|
/*
captures_iter: allows you to iterate over multiple captures of a
regular expression pattern in a text.
The below example captures the valid IP address from the provided
text and prints it.
*/
use regex::{Error, Regex};
fn validate_ips(texts: Vec<&str>) -> Result<Vec<String>, Error> {
let mut valid_ips = Vec::new();
let pattern = match Regex::new(r"\b(?:\d{1,3}\.){0,9}\d{1,3}\b") {
Ok(pattern) => pattern,
Err(err) => return Err(err),
};
let mut ip_found = false; // Flag to check if any IP is found in the texts
for text in texts {
let text_has_valid_ip = process_text(&mut valid_ips, &pattern, text);
if !text_has_valid_ip {
println!("No valid IP address found in the text: '{}'\n", text);
} else {
ip_found = true;
}
}
if !ip_found {
println!("No valid IP addresses found in the texts vector.");
}
Ok(valid_ips)
}
fn process_text(valid_ips: &mut Vec<String>, pattern: &Regex, text: &str) -> bool {
let mut text_has_valid_ip = false; // Flag to check if any valid IP is found in the current text
for captures in pattern.captures_iter(text) {
if let Some(ip) = captures.get(0).map(|m| m.as_str()) {
if is_valid_ip(ip) {
if !valid_ips.contains(&ip.to_string()) {
valid_ips.push(ip.to_string());
}
text_has_valid_ip = true;
}
}
}
text_has_valid_ip
}
fn is_valid_ip(ip: &str) -> bool {
let octets: Vec<&str> = ip.split('.').collect();
if octets.len() != 4 {
println!("Invalid IP: {} (Wrong number of octets)", ip);
return false;
}
for octet in &octets {
match octet.parse::<u8>() {
Ok(_num) => {
// Your code when parsing succeeds
{}
},
Err(_) => {
// Your code when parsing fails
println!("Invalid IP: {} (Octet value out of range: {})", ip, octet);
return false;
}
}
}
true
}
fn main() {
let texts = vec![
"192.168.0.1 is the router's IP address.",
"The server's IP is 10.0.0.11.12", // No valid IP in this text
"300.200.100.1",
"Another valid IP is 172.16.254.1",
"10.11",
"11",
"ab.bc.da.xy",
"190.350.10.11",
"The IP: 10.15.20.21",
];
match validate_ips(texts) {
Ok(valid_ips) => {
if valid_ips.is_empty() {
println!("No valid IPs found");
} else {
println!("\nValid IPs:");
for ip in valid_ips {
println!("{}", ip);
}
}
}
Err(err) => {
println!("Regex error: {}", err);
}
}
}
| 0 |
qxf2_public_repos/rust-motw-regex/src
|
qxf2_public_repos/rust-motw-regex/src/bin/regex_match_mobile_number.rs
|
/*
is_match: Checks if the regex pattern matches the entire text
The below patter checks for the mobile number validation using is_match.
*/
use regex::Regex;
use std::io;
fn prompt_user_input(prompt: &str) -> String {
println!("{}", prompt);
let mut input = String::new();
match io::stdin().read_line(&mut input) {
Ok(_) => input.trim().to_string(),
Err(error) => {
eprintln!("Failed to read line: {}", error);
std::process::exit(1);
}
}
}
fn mobile_number_validation(s: String) -> Result<String, regex::Error> {
let pattern = r"\+91[-\s]?\d{10}"; // Pattern to match mobile number
match Regex::new(pattern) {
Ok(re) => {
if re.is_match(&s) {
Ok(("Valid Mobile Number").to_string())
} else {
Ok(("Invalid Mobile Number").to_string())
}
}
Err(err) => Err(err),
}
}
fn main() {
let mobile_number = prompt_user_input("Please Input Mobile Number (like +91-XXXXXXXXXX):");
println!("Mobile Number : {}", mobile_number);
match mobile_number_validation(mobile_number) {
Ok(re) => {
println!("{}", re);
//println!("The Mobile Number: {}", mobile_number);
}
Err(error) => {
eprintln!("Failed to read line: {}", error);
}
}
}
| 0 |
qxf2_public_repos/rust-motw-regex/src
|
qxf2_public_repos/rust-motw-regex/src/bin/regex_find_iter_email_pattern.rs
|
/*
The below code uses find_iter() method.
In the provided text the script searchs for email address pattern
*/
use regex::Regex;
use std::error::Error;
use ansi_term::Colour::{Green};
fn search_email_pattern_from_sentence(text: &str) -> Result<Vec<String>, Box<dyn Error>> {
let mut emails = Vec::new(); // Store the found email addresses
// Define a valid regex pattern for email address
let pattern = r"\b[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,}\b";
// Create a Regex object
let re = match Regex::new(pattern) {
Ok(re) => re,
Err(err) => return Err(err.into()), // Convert the regex error to Box<dyn Error>
};
// Find all matches in the text
for mat in re.find_iter(text) {
emails.push(mat.as_str().to_string()); // Store the found email addresses
}
if emails.is_empty() {
return Err("No email addresses found in the text.".into()); // Return an error if no emails are found
}
Ok(emails) // Return the found email addresses
}
fn main() {
let text = "Contact us at mak@qxf2.com or support@qxf2.com or invalid.com for assistance.";
println!("The text: {} ", text);
match search_email_pattern_from_sentence(text) {
Ok(emails) => {
// Print the matches
println!("====================Email from text=============================");
for email in emails {
println!("{}", Green.paint(email));
}
}
Err(err) => {
println!("{}", err);
}
}
}
| 0 |
qxf2_public_repos/rust-motw-regex/src
|
qxf2_public_repos/rust-motw-regex/src/bin/regex_capture_date.rs
|
/*
captures: Capture returns an Option containing capture groups if the pattern matches the date.
The below regex pattern captures the date in dd/mm/yyyy.
*/
use regex::Regex;
use std::error::Error;
// Leap year validation function.
fn is_leap_year(year: u32) -> bool {
(year % 4 == 0 && year % 100 != 0) || (year % 400 == 0)
}
fn validate_date(date: &str) -> Result<String, Box<dyn Error>> {
// Declaring the pattern and validating the pattern
let pattern = r"(\d{1,2})/(\d{1,2})/(\d{4})"; // Pattern to match dates
let re = match Regex::new(pattern) {
Ok(re) => re,
Err(_) => return Err("Invalid regex pattern".into()),
};
if let Some(captures) = re.captures(date) {
if let (Some(day), Some(month), Some(year)) = (
captures.get(1).and_then(|m| m.as_str().parse::<u32>().ok()),
captures.get(2).and_then(|m| m.as_str().parse::<u32>().ok()),
captures.get(3).and_then(|m| m.as_str().parse::<u32>().ok()),
) {
let days_in_month = match month {
1 | 3 | 5 | 7 | 8 | 10 | 12 => 31,
4 | 6 | 9 | 11 => 30,
2 if is_leap_year(year) => 29,
2 => 28,
_ => {
return Err("Invalid month".into());
}
};
if day > 0 && day <= days_in_month {
return Ok(format!("Day: {}, Month: {}, Year: {}", day, month, year));
} else {
return Err("Invalid day for the given month and year".into());
}
}
}
Err("Invalid date format, provide correct input".into())
}
fn main() {
// Change the date to check different date validations. Valid pattern dd/mm/yyyy or d/m/yyyy
let date = "29/02/2025";
match validate_date(date) {
Ok(validated_date) => println!("{}", validated_date),
Err(err) => println!("Error: {} \nDate: {}", err,date),
}
}
| 0 |
qxf2_public_repos/rust-motw-regex/src
|
qxf2_public_repos/rust-motw-regex/src/bin/regex_replace_text.rs
|
/*
The below code uses Regex:replace_all() method.
The program prompts user to enter sentence, then word to replace and replacement word
*/
use regex::Regex;
use std::io;
use ansi_term::Colour::{Red, Blue, Green, Yellow};
fn prompt_user_input(prompt: &str) -> String {
println!("{}", prompt);
let mut input = String::new();
match io::stdin().read_line(&mut input) {
Ok(_) => input.trim().to_string(),
Err(error) => {
eprintln!("Failed to read line: {}", error);
std::process::exit(1);
}
}
}
fn replace_text(sentence: &str, word_to_replace: &str, replacement_word: &str) -> Result<String, regex::Error> {
// Create a Regex object for the word to be replaced
let re = match Regex::new(&format!(r"\b{}\b", regex::escape(word_to_replace))) {
Ok(re) => re,
Err(err) => return Err(err),
};
// Replace all occurrences of the word
let replaced_sentence = re.replace_all(sentence, replacement_word).to_string();
Ok(replaced_sentence)
}
// Program starting point
fn main() {
let sentence = prompt_user_input("Enter a Sentence:");
println!("Sentence: {}", Blue.bold().paint(&sentence));
let word_to_replace = prompt_user_input("Enter the word to replace:");
println!("word to replace: {}", Red.bold().paint(&word_to_replace));
let replacement_word = prompt_user_input("Enter the replacement word:");
println!("Enter replacement word: {}", Green.bold().paint(&replacement_word));
match replace_text(&sentence, &word_to_replace, &replacement_word) {
Ok(replaced_sentence) => {
println!("Modified sentence: {}", Yellow.bold().paint(&replaced_sentence));
}
Err(err) => eprintln!("Error replacing text: {}", err),
}
}
| 0 |
qxf2_public_repos/rust-motw-regex/src
|
qxf2_public_repos/rust-motw-regex/src/bin/regex_find_word_in_sentence.rs
|
/* find(): searches for the first occurrence of a regex pattern in a string.
The below takes input sentence and search word from the user and prints the
position for the search word.
To handle case insensitive used RegexBuilder
*/
use regex::RegexBuilder;
use std::io;
use ansi_term::Colour::{Red, Green};
fn find_word_in_sentence(sentence: &str, search_word: &str) -> Result<String, regex::Error> {
// Create a Regex object for the pattern
let mut binding = RegexBuilder::new(search_word);
let regex_builder = binding.case_insensitive(true);
// Check if the regex compilation was successful
let re = match regex_builder.build() {
Ok(re) => re,
Err(err) => {
eprintln!("Error: {}", err);
return Err(err);
}
};
// Search for the pattern in the sentence
if let Some(mat) = re.find(sentence) {
let matched_text = mat.as_str();
let start = mat.start();
let end = mat.end();
let word_position = format!("Found '{}' at positions {}-{}", matched_text, start, end);
Ok(word_position)
} else {
let word_position = "Word not found in the provided sentence. ".to_string();
Ok(word_position)
}
}
fn prompt_user_input(prompt: &str) -> String {
println!("{}", prompt);
let mut input = String::new();
match io::stdin().read_line(&mut input) {
Ok(_) => input.trim().to_string(),
Err(error) => {
eprintln!("Failed to read line: {}", error);
std::process::exit(1);
}
}
}
// Program starting point
fn main() {
let sentence = prompt_user_input("Input Sentence:");
println!("Sentence: {}", sentence);
let search_word = prompt_user_input("Enter Search word from the input sentence:");
println!("Search Word: {}", search_word);
// Validate input
if sentence.is_empty() || search_word.is_empty() {
println!("{}",Red.paint("Error: Input cannot be empty."));
return;
}
match find_word_in_sentence(&sentence, &search_word) {
Ok(word_position) => {
println!("{}", Green.paint(word_position));
}
Err(err) => println!("Error: {}", err),
}
}
| 0 |
qxf2_public_repos/rust-motw-regex/src
|
qxf2_public_repos/rust-motw-regex/src/bin/regex_find_iter_hashtags_from_tweets.rs
|
use regex::Regex;
fn extract_hashtag_from_tweets(tweets: Vec<&str>) -> Vec<(&str, Vec<&str>)> {
let mut all_matches: Vec<(&str, Vec<&str>)> = Vec::new(); // Store tweet and matches
// Define the regex pattern for extracting hashtags
let pattern = r"#\w+";
// Create a Regex object
let re = Regex::new(pattern);
// Check if the regex compilation was successful
let re = match re {
Ok(re) => re,
Err(err) => {
eprintln!("Error: {}", err);
return all_matches; // Return an empty vector on error
}
};
// Iterate through each tweet
for tweet in tweets {
// Extract hashtags from each tweet
let matches: Vec<&str> = re.find_iter(tweet)
.map(|mat| mat.as_str())
.collect();
// Store tweet and matches
if !matches.is_empty() {
all_matches.push((tweet, matches)); // Store tweet and matches
}
}
all_matches // Return tweets with their corresponding matches
}
fn main() {
// Example tweets
let tweets = vec![
"We wrote a GitHub action to deply #rust code to AWS lambda.",
"Excited to learn about #regex in #Rust!",
"Check out how to use Py03 and maturin to call Rust libraries from Python #maturin #Rust #Py03",
"#Java we did not use much as we mainly uses ##Python",
];
let extracted_data = extract_hashtag_from_tweets(tweets);
// Print tweets followed by their corresponding matches
for (tweet, matches) in extracted_data {
println!("Tweet: '{}'", tweet);
println!("Extracted Hashtag: {:?}", matches);
println!(); // Adding an empty line for clarity
}
}
| 0 |
qxf2_public_repos/rust-motw-regex/src
|
qxf2_public_repos/rust-motw-regex/src/bin/regex_splitn_text.rs
|
/*
The below example uses splitn method.
The below example uses splitn to extract key details like product name, price, and description.
Used ansi_term crate - This Crate is a library for colours and formatting
*/
use regex::Regex;
use ansi_term::Colour::{Red, Blue};
fn split_text(product_description: &str) -> Result<Vec<&str>, regex::Error> {
let pattern = r"\|"; // Assuming "|" is the delimiter
let re = match Regex::new(pattern) {
Ok(re) => re,
Err(e) => return Err(e),
};
let parts: Vec<&str> = re.splitn(product_description, 3).collect();
Ok(parts)
}
fn main() {
let product_description = "Widget | $29.99 | A high-quality widget for your needs.";
println!("The Product Description: {}", Red.paint(product_description));
println!("{}", Blue.paint("================The Split:Product/Price/Desc==================================="));
match split_text(&product_description) {
Ok(parts) => {
if parts.len() >= 3 {
let product_name = parts[0].trim();
let price = parts[1].trim();
let description = parts[2].trim();
println!("Product Name: {}", product_name);
println!("Price: {}", price);
println!("Description: {}", description);
} else {
println!("Invalid product description format");
}
}
Err(err) => {
println!("Failed to split product description: {}", err);
// You can take further actions here for error handling if needed.
}
}
}
| 0 |
qxf2_public_repos
|
qxf2_public_repos/what-is-confusing-backend/messages.json
|
[
{
"id": 1,
"sentence":
"This is the test data for checking the highlighter for each word in this sentence",
"timer": 40
},
{
"id": 2,
"sentence":
"This is the test data 2 for checking the highlighter for each word from the second sentence",
"timer": 70
},
{
"id": 3,
"sentence":
"This is the test data 3 for checking the highlighter sentence from the third sentence",
"timer": 20
},
{
"id": 4,
"sentence":
"This is the test data of sentence 4 for checking the highlighter for each word in this sentence",
"timer": 25
},
{
"id": 5,
"sentence":
"This is the test data 5 for checking the highlighter for each word from the second sentence",
"timer": 42
},
{
"id": 6,
"sentence":
"This is the test data 6 for checking the highlighter sentence from the third sentence",
"timer": 35
}
]
| 0 |
qxf2_public_repos
|
qxf2_public_repos/what-is-confusing-backend/requirement.txt
|
aniso8601==8.0.0
click==7.1.2
Flask==1.1.2
Flask-RESTful==0.3.8
Flask-SQLAlchemy==2.4.3
itsdangerous==1.1.0
Jinja2==2.11.2
MarkupSafe==1.1.1
pytz==2020.1
six==1.15.0
SQLAlchemy==1.3.18
Werkzeug==1.0.1
| 0 |
qxf2_public_repos
|
qxf2_public_repos/what-is-confusing-backend/main.py
|
from flask import Flask, request, g, jsonify
from flask_sqlalchemy import SQLAlchemy
from flask_restful import Api, Resource
from flask_cors import CORS
import sqlite3 as sql
import json
import random
app = Flask(__name__)
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///confusing_answer.db'
db = SQLAlchemy(app)
CORS(app)
api = Api(app)
### ------- All the tables as per the DB design from the link : https://prnt.sc/12fcv8v ------- ###
class User(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(200))
class Answers(db.Model):
id = db.Column(db.Integer, primary_key=True)
user_id = db.Column(db.String(200), db.ForeignKey(User.id), nullable=False)
question_id = db.Column(db.String(200), primary_key=True)
time_taken = db.Column(db.Integer)
class TextAnswers(db.Model):
answer_id = db.Column(
db.Integer, db.ForeignKey(Answers.id), nullable=False)
text = db.Column(db.String(200), primary_key=True)
class MarkedWords(db.Model):
answer_id = db.Column(
db.Integer, db.ForeignKey(Answers.id), nullable=False)
question_id = db.Column(db.Integer, primary_key=True)
word = db.Column(db.String(200), primary_key=True)
### ------- end of the table models ------- ###
### ------- Creating user Api ------- ###
@app.route('/user', methods=['POST'])
def createUser():
msg = "error"
try:
req_data = request.get_json()
name = req_data['name']
user = User(name =name)
db.session.add(user)
db.session.commit()
print(user.id)
msg = "Record added successfully"
except:
msg = "error in insert operation"
finally:
return msg
### ------- retreiving user by id ------- ###
@app.route('/user/<id>')
def getUser(id):
try:
response = []
user = User.query.filter_by(id=id).first()
response.append({"id":user.id, "name" : user.name})
return jsonify(response)
except:
return "There are no users with the given id"
### ------- retrieving all users ------- ###
@app.route('/user/*')
def getAllUser():
try:
response = []
users = User.query.all()
for user in users:
response.append({"id":user.id, "name" : user.name})
return jsonify(response)
except:
return "There are no users"
### ------- Adding the user inputs to database tables ------- ###
@app.route('/answered', methods=['POST'])
def answered():
msg = "error"
try:
req_data = request.get_json()
question_id = req_data['id']
marked_word = req_data['markedWords']
text = req_data['inputText']
time_spent = req_data['timeSpent']
user_id = req_data['userId']
answerId = Answers.query.count() + 1
print(answerId)
answers = Answers(id = answerId,user_id= user_id, question_id = question_id, time_taken = time_spent)
db.session.add(answers)
db.session.commit()
textAnswers = TextAnswers(answer_id= answerId, text = text )
db.session.add(textAnswers)
db.session.commit()
for word in marked_word:
markedWords = MarkedWords(answer_id = answerId, question_id = question_id, word= word)
db.session.add(markedWords)
db.session.commit()
msg = "Record added successfully"
except:
msg = "error in insert operation"
finally:
return msg
### ------- Opening JSON file ------- ###
message_file = open('messages.json',)
### ------- returns JSON object as a dictionary ------- ###
messages = json.load(message_file)
### ------- Generates random question from the JSON file ------- ###
@app.route('/question')
def question():
n = random.randint(0, len(messages)-1)
message = messages[n]
return message
if __name__ == "__main__":
app.run(debug=True)
| 0 |
qxf2_public_repos/what-is-confusing-backend
|
qxf2_public_repos/what-is-confusing-backend/venv/pyvenv.cfg
|
home = C:\Program Files\Python39
include-system-site-packages = false
version = 3.9.4
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv
|
qxf2_public_repos/what-is-confusing-backend/venv/Scripts/activate.bat
|
@echo off
rem This file is UTF-8 encoded, so we need to update the current code page while executing it
for /f "tokens=2 delims=:." %%a in ('"%SystemRoot%\System32\chcp.com"') do (
set _OLD_CODEPAGE=%%a
)
if defined _OLD_CODEPAGE (
"%SystemRoot%\System32\chcp.com" 65001 > nul
)
set VIRTUAL_ENV=C:\Users\saile\Desktop\New folder\ReactProjects\qxf2\Backend-with-python\confusing-API\venv
if not defined PROMPT set PROMPT=$P$G
if defined _OLD_VIRTUAL_PROMPT set PROMPT=%_OLD_VIRTUAL_PROMPT%
if defined _OLD_VIRTUAL_PYTHONHOME set PYTHONHOME=%_OLD_VIRTUAL_PYTHONHOME%
set _OLD_VIRTUAL_PROMPT=%PROMPT%
set PROMPT=(venv) %PROMPT%
if defined PYTHONHOME set _OLD_VIRTUAL_PYTHONHOME=%PYTHONHOME%
set PYTHONHOME=
if defined _OLD_VIRTUAL_PATH set PATH=%_OLD_VIRTUAL_PATH%
if not defined _OLD_VIRTUAL_PATH set _OLD_VIRTUAL_PATH=%PATH%
set PATH=%VIRTUAL_ENV%\Scripts;%PATH%
:END
if defined _OLD_CODEPAGE (
"%SystemRoot%\System32\chcp.com" %_OLD_CODEPAGE% > nul
set _OLD_CODEPAGE=
)
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv
|
qxf2_public_repos/what-is-confusing-backend/venv/Scripts/Activate.ps1
|
<#
.Synopsis
Activate a Python virtual environment for the current PowerShell session.
.Description
Pushes the python executable for a virtual environment to the front of the
$Env:PATH environment variable and sets the prompt to signify that you are
in a Python virtual environment. Makes use of the command line switches as
well as the `pyvenv.cfg` file values present in the virtual environment.
.Parameter VenvDir
Path to the directory that contains the virtual environment to activate. The
default value for this is the parent of the directory that the Activate.ps1
script is located within.
.Parameter Prompt
The prompt prefix to display when this virtual environment is activated. By
default, this prompt is the name of the virtual environment folder (VenvDir)
surrounded by parentheses and followed by a single space (ie. '(.venv) ').
.Example
Activate.ps1
Activates the Python virtual environment that contains the Activate.ps1 script.
.Example
Activate.ps1 -Verbose
Activates the Python virtual environment that contains the Activate.ps1 script,
and shows extra information about the activation as it executes.
.Example
Activate.ps1 -VenvDir C:\Users\MyUser\Common\.venv
Activates the Python virtual environment located in the specified location.
.Example
Activate.ps1 -Prompt "MyPython"
Activates the Python virtual environment that contains the Activate.ps1 script,
and prefixes the current prompt with the specified string (surrounded in
parentheses) while the virtual environment is active.
.Notes
On Windows, it may be required to enable this Activate.ps1 script by setting the
execution policy for the user. You can do this by issuing the following PowerShell
command:
PS C:\> Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser
For more information on Execution Policies:
https://go.microsoft.com/fwlink/?LinkID=135170
#>
Param(
[Parameter(Mandatory = $false)]
[String]
$VenvDir,
[Parameter(Mandatory = $false)]
[String]
$Prompt
)
<# Function declarations --------------------------------------------------- #>
<#
.Synopsis
Remove all shell session elements added by the Activate script, including the
addition of the virtual environment's Python executable from the beginning of
the PATH variable.
.Parameter NonDestructive
If present, do not remove this function from the global namespace for the
session.
#>
function global:deactivate ([switch]$NonDestructive) {
# Revert to original values
# The prior prompt:
if (Test-Path -Path Function:_OLD_VIRTUAL_PROMPT) {
Copy-Item -Path Function:_OLD_VIRTUAL_PROMPT -Destination Function:prompt
Remove-Item -Path Function:_OLD_VIRTUAL_PROMPT
}
# The prior PYTHONHOME:
if (Test-Path -Path Env:_OLD_VIRTUAL_PYTHONHOME) {
Copy-Item -Path Env:_OLD_VIRTUAL_PYTHONHOME -Destination Env:PYTHONHOME
Remove-Item -Path Env:_OLD_VIRTUAL_PYTHONHOME
}
# The prior PATH:
if (Test-Path -Path Env:_OLD_VIRTUAL_PATH) {
Copy-Item -Path Env:_OLD_VIRTUAL_PATH -Destination Env:PATH
Remove-Item -Path Env:_OLD_VIRTUAL_PATH
}
# Just remove the VIRTUAL_ENV altogether:
if (Test-Path -Path Env:VIRTUAL_ENV) {
Remove-Item -Path env:VIRTUAL_ENV
}
# Just remove the _PYTHON_VENV_PROMPT_PREFIX altogether:
if (Get-Variable -Name "_PYTHON_VENV_PROMPT_PREFIX" -ErrorAction SilentlyContinue) {
Remove-Variable -Name _PYTHON_VENV_PROMPT_PREFIX -Scope Global -Force
}
# Leave deactivate function in the global namespace if requested:
if (-not $NonDestructive) {
Remove-Item -Path function:deactivate
}
}
<#
.Description
Get-PyVenvConfig parses the values from the pyvenv.cfg file located in the
given folder, and returns them in a map.
For each line in the pyvenv.cfg file, if that line can be parsed into exactly
two strings separated by `=` (with any amount of whitespace surrounding the =)
then it is considered a `key = value` line. The left hand string is the key,
the right hand is the value.
If the value starts with a `'` or a `"` then the first and last character is
stripped from the value before being captured.
.Parameter ConfigDir
Path to the directory that contains the `pyvenv.cfg` file.
#>
function Get-PyVenvConfig(
[String]
$ConfigDir
) {
Write-Verbose "Given ConfigDir=$ConfigDir, obtain values in pyvenv.cfg"
# Ensure the file exists, and issue a warning if it doesn't (but still allow the function to continue).
$pyvenvConfigPath = Join-Path -Resolve -Path $ConfigDir -ChildPath 'pyvenv.cfg' -ErrorAction Continue
# An empty map will be returned if no config file is found.
$pyvenvConfig = @{ }
if ($pyvenvConfigPath) {
Write-Verbose "File exists, parse `key = value` lines"
$pyvenvConfigContent = Get-Content -Path $pyvenvConfigPath
$pyvenvConfigContent | ForEach-Object {
$keyval = $PSItem -split "\s*=\s*", 2
if ($keyval[0] -and $keyval[1]) {
$val = $keyval[1]
# Remove extraneous quotations around a string value.
if ("'""".Contains($val.Substring(0, 1))) {
$val = $val.Substring(1, $val.Length - 2)
}
$pyvenvConfig[$keyval[0]] = $val
Write-Verbose "Adding Key: '$($keyval[0])'='$val'"
}
}
}
return $pyvenvConfig
}
<# Begin Activate script --------------------------------------------------- #>
# Determine the containing directory of this script
$VenvExecPath = Split-Path -Parent $MyInvocation.MyCommand.Definition
$VenvExecDir = Get-Item -Path $VenvExecPath
Write-Verbose "Activation script is located in path: '$VenvExecPath'"
Write-Verbose "VenvExecDir Fullname: '$($VenvExecDir.FullName)"
Write-Verbose "VenvExecDir Name: '$($VenvExecDir.Name)"
# Set values required in priority: CmdLine, ConfigFile, Default
# First, get the location of the virtual environment, it might not be
# VenvExecDir if specified on the command line.
if ($VenvDir) {
Write-Verbose "VenvDir given as parameter, using '$VenvDir' to determine values"
}
else {
Write-Verbose "VenvDir not given as a parameter, using parent directory name as VenvDir."
$VenvDir = $VenvExecDir.Parent.FullName.TrimEnd("\\/")
Write-Verbose "VenvDir=$VenvDir"
}
# Next, read the `pyvenv.cfg` file to determine any required value such
# as `prompt`.
$pyvenvCfg = Get-PyVenvConfig -ConfigDir $VenvDir
# Next, set the prompt from the command line, or the config file, or
# just use the name of the virtual environment folder.
if ($Prompt) {
Write-Verbose "Prompt specified as argument, using '$Prompt'"
}
else {
Write-Verbose "Prompt not specified as argument to script, checking pyvenv.cfg value"
if ($pyvenvCfg -and $pyvenvCfg['prompt']) {
Write-Verbose " Setting based on value in pyvenv.cfg='$($pyvenvCfg['prompt'])'"
$Prompt = $pyvenvCfg['prompt'];
}
else {
Write-Verbose " Setting prompt based on parent's directory's name. (Is the directory name passed to venv module when creating the virutal environment)"
Write-Verbose " Got leaf-name of $VenvDir='$(Split-Path -Path $venvDir -Leaf)'"
$Prompt = Split-Path -Path $venvDir -Leaf
}
}
Write-Verbose "Prompt = '$Prompt'"
Write-Verbose "VenvDir='$VenvDir'"
# Deactivate any currently active virtual environment, but leave the
# deactivate function in place.
deactivate -nondestructive
# Now set the environment variable VIRTUAL_ENV, used by many tools to determine
# that there is an activated venv.
$env:VIRTUAL_ENV = $VenvDir
if (-not $Env:VIRTUAL_ENV_DISABLE_PROMPT) {
Write-Verbose "Setting prompt to '$Prompt'"
# Set the prompt to include the env name
# Make sure _OLD_VIRTUAL_PROMPT is global
function global:_OLD_VIRTUAL_PROMPT { "" }
Copy-Item -Path function:prompt -Destination function:_OLD_VIRTUAL_PROMPT
New-Variable -Name _PYTHON_VENV_PROMPT_PREFIX -Description "Python virtual environment prompt prefix" -Scope Global -Option ReadOnly -Visibility Public -Value $Prompt
function global:prompt {
Write-Host -NoNewline -ForegroundColor Green "($_PYTHON_VENV_PROMPT_PREFIX) "
_OLD_VIRTUAL_PROMPT
}
}
# Clear PYTHONHOME
if (Test-Path -Path Env:PYTHONHOME) {
Copy-Item -Path Env:PYTHONHOME -Destination Env:_OLD_VIRTUAL_PYTHONHOME
Remove-Item -Path Env:PYTHONHOME
}
# Add the venv to the PATH
Copy-Item -Path Env:PATH -Destination Env:_OLD_VIRTUAL_PATH
$Env:PATH = "$VenvExecDir$([System.IO.Path]::PathSeparator)$Env:PATH"
# SIG # Begin signature block
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# SIG # End signature block
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv
|
qxf2_public_repos/what-is-confusing-backend/venv/Scripts/activate
|
# This file must be used with "source bin/activate" *from bash*
# you cannot run it directly
deactivate () {
# reset old environment variables
if [ -n "${_OLD_VIRTUAL_PATH:-}" ] ; then
PATH="${_OLD_VIRTUAL_PATH:-}"
export PATH
unset _OLD_VIRTUAL_PATH
fi
if [ -n "${_OLD_VIRTUAL_PYTHONHOME:-}" ] ; then
PYTHONHOME="${_OLD_VIRTUAL_PYTHONHOME:-}"
export PYTHONHOME
unset _OLD_VIRTUAL_PYTHONHOME
fi
# This should detect bash and zsh, which have a hash command that must
# be called to get it to forget past commands. Without forgetting
# past commands the $PATH changes we made may not be respected
if [ -n "${BASH:-}" -o -n "${ZSH_VERSION:-}" ] ; then
hash -r 2> /dev/null
fi
if [ -n "${_OLD_VIRTUAL_PS1:-}" ] ; then
PS1="${_OLD_VIRTUAL_PS1:-}"
export PS1
unset _OLD_VIRTUAL_PS1
fi
unset VIRTUAL_ENV
if [ ! "${1:-}" = "nondestructive" ] ; then
# Self destruct!
unset -f deactivate
fi
}
# unset irrelevant variables
deactivate nondestructive
VIRTUAL_ENV="C:\Users\saile\Desktop\New folder\ReactProjects\qxf2\Backend-with-python\confusing-API\venv"
export VIRTUAL_ENV
_OLD_VIRTUAL_PATH="$PATH"
PATH="$VIRTUAL_ENV/Scripts:$PATH"
export PATH
# unset PYTHONHOME if set
# this will fail if PYTHONHOME is set to the empty string (which is bad anyway)
# could use `if (set -u; : $PYTHONHOME) ;` in bash
if [ -n "${PYTHONHOME:-}" ] ; then
_OLD_VIRTUAL_PYTHONHOME="${PYTHONHOME:-}"
unset PYTHONHOME
fi
if [ -z "${VIRTUAL_ENV_DISABLE_PROMPT:-}" ] ; then
_OLD_VIRTUAL_PS1="${PS1:-}"
PS1="(venv) ${PS1:-}"
export PS1
fi
# This should detect bash and zsh, which have a hash command that must
# be called to get it to forget past commands. Without forgetting
# past commands the $PATH changes we made may not be respected
if [ -n "${BASH:-}" -o -n "${ZSH_VERSION:-}" ] ; then
hash -r 2> /dev/null
fi
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv
|
qxf2_public_repos/what-is-confusing-backend/venv/Scripts/deactivate.bat
|
@echo off
if defined _OLD_VIRTUAL_PROMPT (
set "PROMPT=%_OLD_VIRTUAL_PROMPT%"
)
set _OLD_VIRTUAL_PROMPT=
if defined _OLD_VIRTUAL_PYTHONHOME (
set "PYTHONHOME=%_OLD_VIRTUAL_PYTHONHOME%"
set _OLD_VIRTUAL_PYTHONHOME=
)
if defined _OLD_VIRTUAL_PATH (
set "PATH=%_OLD_VIRTUAL_PATH%"
)
set _OLD_VIRTUAL_PATH=
set VIRTUAL_ENV=
:END
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/easy_install.py
|
"""Run the EasyInstall command"""
if __name__ == '__main__':
from setuptools.command.easy_install import main
main()
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/pycodestyle.py
|
#!/usr/bin/env python
# pycodestyle.py - Check Python source code formatting, according to
# PEP 8
#
# Copyright (C) 2006-2009 Johann C. Rocholl <johann@rocholl.net>
# Copyright (C) 2009-2014 Florent Xicluna <florent.xicluna@gmail.com>
# Copyright (C) 2014-2016 Ian Lee <ianlee1521@gmail.com>
#
# Permission is hereby granted, free of charge, to any person
# obtaining a copy of this software and associated documentation files
# (the "Software"), to deal in the Software without restriction,
# including without limitation the rights to use, copy, modify, merge,
# publish, distribute, sublicense, and/or sell copies of the Software,
# and to permit persons to whom the Software is furnished to do so,
# subject to the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
r"""
Check Python source code formatting, according to PEP 8.
For usage and a list of options, try this:
$ python pycodestyle.py -h
This program and its regression test suite live here:
https://github.com/pycqa/pycodestyle
Groups of errors and warnings:
E errors
W warnings
100 indentation
200 whitespace
300 blank lines
400 imports
500 line length
600 deprecation
700 statements
900 syntax error
"""
from __future__ import with_statement
import inspect
import keyword
import os
import re
import sys
import time
import tokenize
import warnings
import bisect
try:
from functools import lru_cache
except ImportError:
def lru_cache(maxsize=128): # noqa as it's a fake implementation.
"""Does not really need a real a lru_cache, it's just
optimization, so let's just do nothing here. Python 3.2+ will
just get better performances, time to upgrade?
"""
return lambda function: function
from fnmatch import fnmatch
from optparse import OptionParser
try:
from configparser import RawConfigParser
from io import TextIOWrapper
except ImportError:
from ConfigParser import RawConfigParser
__version__ = '2.7.0'
DEFAULT_EXCLUDE = '.svn,CVS,.bzr,.hg,.git,__pycache__,.tox'
DEFAULT_IGNORE = 'E121,E123,E126,E226,E24,E704,W503,W504'
try:
if sys.platform == 'win32':
USER_CONFIG = os.path.expanduser(r'~\.pycodestyle')
else:
USER_CONFIG = os.path.join(
os.getenv('XDG_CONFIG_HOME') or os.path.expanduser('~/.config'),
'pycodestyle'
)
except ImportError:
USER_CONFIG = None
PROJECT_CONFIG = ('setup.cfg', 'tox.ini')
TESTSUITE_PATH = os.path.join(os.path.dirname(__file__), 'testsuite')
MAX_LINE_LENGTH = 79
# Number of blank lines between various code parts.
BLANK_LINES_CONFIG = {
# Top level class and function.
'top_level': 2,
# Methods and nested class and function.
'method': 1,
}
MAX_DOC_LENGTH = 72
INDENT_SIZE = 4
REPORT_FORMAT = {
'default': '%(path)s:%(row)d:%(col)d: %(code)s %(text)s',
'pylint': '%(path)s:%(row)d: [%(code)s] %(text)s',
}
PyCF_ONLY_AST = 1024
SINGLETONS = frozenset(['False', 'None', 'True'])
KEYWORDS = frozenset(keyword.kwlist + ['print', 'async']) - SINGLETONS
UNARY_OPERATORS = frozenset(['>>', '**', '*', '+', '-'])
ARITHMETIC_OP = frozenset(['**', '*', '/', '//', '+', '-', '@'])
WS_OPTIONAL_OPERATORS = ARITHMETIC_OP.union(['^', '&', '|', '<<', '>>', '%'])
# Warn for -> function annotation operator in py3.5+ (issue 803)
FUNCTION_RETURN_ANNOTATION_OP = ['->'] if sys.version_info >= (3, 5) else []
ASSIGNMENT_EXPRESSION_OP = [':='] if sys.version_info >= (3, 8) else []
WS_NEEDED_OPERATORS = frozenset([
'**=', '*=', '/=', '//=', '+=', '-=', '!=', '<>', '<', '>',
'%=', '^=', '&=', '|=', '==', '<=', '>=', '<<=', '>>=', '=',
'and', 'in', 'is', 'or'] +
FUNCTION_RETURN_ANNOTATION_OP +
ASSIGNMENT_EXPRESSION_OP)
WHITESPACE = frozenset(' \t')
NEWLINE = frozenset([tokenize.NL, tokenize.NEWLINE])
SKIP_TOKENS = NEWLINE.union([tokenize.INDENT, tokenize.DEDENT])
# ERRORTOKEN is triggered by backticks in Python 3
SKIP_COMMENTS = SKIP_TOKENS.union([tokenize.COMMENT, tokenize.ERRORTOKEN])
BENCHMARK_KEYS = ['directories', 'files', 'logical lines', 'physical lines']
INDENT_REGEX = re.compile(r'([ \t]*)')
RAISE_COMMA_REGEX = re.compile(r'raise\s+\w+\s*,')
RERAISE_COMMA_REGEX = re.compile(r'raise\s+\w+\s*,.*,\s*\w+\s*$')
ERRORCODE_REGEX = re.compile(r'\b[A-Z]\d{3}\b')
DOCSTRING_REGEX = re.compile(r'u?r?["\']')
EXTRANEOUS_WHITESPACE_REGEX = re.compile(r'[\[({] | [\]}),;]| :(?!=)')
WHITESPACE_AFTER_COMMA_REGEX = re.compile(r'[,;:]\s*(?: |\t)')
COMPARE_SINGLETON_REGEX = re.compile(r'(\bNone|\bFalse|\bTrue)?\s*([=!]=)'
r'\s*(?(1)|(None|False|True))\b')
COMPARE_NEGATIVE_REGEX = re.compile(r'\b(?<!is\s)(not)\s+[^][)(}{ ]+\s+'
r'(in|is)\s')
COMPARE_TYPE_REGEX = re.compile(r'(?:[=!]=|is(?:\s+not)?)\s+type(?:s.\w+Type'
r'|\s*\(\s*([^)]*[^ )])\s*\))')
KEYWORD_REGEX = re.compile(r'(\s*)\b(?:%s)\b(\s*)' % r'|'.join(KEYWORDS))
OPERATOR_REGEX = re.compile(r'(?:[^,\s])(\s*)(?:[-+*/|!<=>%&^]+)(\s*)')
LAMBDA_REGEX = re.compile(r'\blambda\b')
HUNK_REGEX = re.compile(r'^@@ -\d+(?:,\d+)? \+(\d+)(?:,(\d+))? @@.*$')
STARTSWITH_DEF_REGEX = re.compile(r'^(async\s+def|def)\b')
STARTSWITH_TOP_LEVEL_REGEX = re.compile(r'^(async\s+def\s+|def\s+|class\s+|@)')
STARTSWITH_INDENT_STATEMENT_REGEX = re.compile(
r'^\s*({0})\b'.format('|'.join(s.replace(' ', r'\s+') for s in (
'def', 'async def',
'for', 'async for',
'if', 'elif', 'else',
'try', 'except', 'finally',
'with', 'async with',
'class',
'while',
)))
)
DUNDER_REGEX = re.compile(r'^__([^\s]+)__ = ')
_checks = {'physical_line': {}, 'logical_line': {}, 'tree': {}}
def _get_parameters(function):
if sys.version_info >= (3, 3):
return [parameter.name
for parameter
in inspect.signature(function).parameters.values()
if parameter.kind == parameter.POSITIONAL_OR_KEYWORD]
else:
return inspect.getargspec(function)[0]
def register_check(check, codes=None):
"""Register a new check object."""
def _add_check(check, kind, codes, args):
if check in _checks[kind]:
_checks[kind][check][0].extend(codes or [])
else:
_checks[kind][check] = (codes or [''], args)
if inspect.isfunction(check):
args = _get_parameters(check)
if args and args[0] in ('physical_line', 'logical_line'):
if codes is None:
codes = ERRORCODE_REGEX.findall(check.__doc__ or '')
_add_check(check, args[0], codes, args)
elif inspect.isclass(check):
if _get_parameters(check.__init__)[:2] == ['self', 'tree']:
_add_check(check, 'tree', codes, None)
return check
########################################################################
# Plugins (check functions) for physical lines
########################################################################
@register_check
def tabs_or_spaces(physical_line, indent_char):
r"""Never mix tabs and spaces.
The most popular way of indenting Python is with spaces only. The
second-most popular way is with tabs only. Code indented with a
mixture of tabs and spaces should be converted to using spaces
exclusively. When invoking the Python command line interpreter with
the -t option, it issues warnings about code that illegally mixes
tabs and spaces. When using -tt these warnings become errors.
These options are highly recommended!
Okay: if a == 0:\n a = 1\n b = 1
E101: if a == 0:\n a = 1\n\tb = 1
"""
indent = INDENT_REGEX.match(physical_line).group(1)
for offset, char in enumerate(indent):
if char != indent_char:
return offset, "E101 indentation contains mixed spaces and tabs"
@register_check
def tabs_obsolete(physical_line):
r"""On new projects, spaces-only are strongly recommended over tabs.
Okay: if True:\n return
W191: if True:\n\treturn
"""
indent = INDENT_REGEX.match(physical_line).group(1)
if '\t' in indent:
return indent.index('\t'), "W191 indentation contains tabs"
@register_check
def trailing_whitespace(physical_line):
r"""Trailing whitespace is superfluous.
The warning returned varies on whether the line itself is blank,
for easier filtering for those who want to indent their blank lines.
Okay: spam(1)\n#
W291: spam(1) \n#
W293: class Foo(object):\n \n bang = 12
"""
physical_line = physical_line.rstrip('\n') # chr(10), newline
physical_line = physical_line.rstrip('\r') # chr(13), carriage return
physical_line = physical_line.rstrip('\x0c') # chr(12), form feed, ^L
stripped = physical_line.rstrip(' \t\v')
if physical_line != stripped:
if stripped:
return len(stripped), "W291 trailing whitespace"
else:
return 0, "W293 blank line contains whitespace"
@register_check
def trailing_blank_lines(physical_line, lines, line_number, total_lines):
r"""Trailing blank lines are superfluous.
Okay: spam(1)
W391: spam(1)\n
However the last line should end with a new line (warning W292).
"""
if line_number == total_lines:
stripped_last_line = physical_line.rstrip('\r\n')
if physical_line and not stripped_last_line:
return 0, "W391 blank line at end of file"
if stripped_last_line == physical_line:
return len(lines[-1]), "W292 no newline at end of file"
@register_check
def maximum_line_length(physical_line, max_line_length, multiline,
line_number, noqa):
r"""Limit all lines to a maximum of 79 characters.
There are still many devices around that are limited to 80 character
lines; plus, limiting windows to 80 characters makes it possible to
have several windows side-by-side. The default wrapping on such
devices looks ugly. Therefore, please limit all lines to a maximum
of 79 characters. For flowing long blocks of text (docstrings or
comments), limiting the length to 72 characters is recommended.
Reports error E501.
"""
line = physical_line.rstrip()
length = len(line)
if length > max_line_length and not noqa:
# Special case: ignore long shebang lines.
if line_number == 1 and line.startswith('#!'):
return
# Special case for long URLs in multi-line docstrings or
# comments, but still report the error when the 72 first chars
# are whitespaces.
chunks = line.split()
if ((len(chunks) == 1 and multiline) or
(len(chunks) == 2 and chunks[0] == '#')) and \
len(line) - len(chunks[-1]) < max_line_length - 7:
return
if hasattr(line, 'decode'): # Python 2
# The line could contain multi-byte characters
try:
length = len(line.decode('utf-8'))
except UnicodeError:
pass
if length > max_line_length:
return (max_line_length, "E501 line too long "
"(%d > %d characters)" % (length, max_line_length))
########################################################################
# Plugins (check functions) for logical lines
########################################################################
def _is_one_liner(logical_line, indent_level, lines, line_number):
if not STARTSWITH_TOP_LEVEL_REGEX.match(logical_line):
return False
line_idx = line_number - 1
if line_idx < 1:
prev_indent = 0
else:
prev_indent = expand_indent(lines[line_idx - 1])
if prev_indent > indent_level:
return False
while line_idx < len(lines):
line = lines[line_idx].strip()
if not line.startswith('@') and STARTSWITH_TOP_LEVEL_REGEX.match(line):
break
else:
line_idx += 1
else:
return False # invalid syntax: EOF while searching for def/class
next_idx = line_idx + 1
while next_idx < len(lines):
if lines[next_idx].strip():
break
else:
next_idx += 1
else:
return True # line is last in the file
return expand_indent(lines[next_idx]) <= indent_level
@register_check
def blank_lines(logical_line, blank_lines, indent_level, line_number,
blank_before, previous_logical,
previous_unindented_logical_line, previous_indent_level,
lines):
r"""Separate top-level function and class definitions with two blank
lines.
Method definitions inside a class are separated by a single blank
line.
Extra blank lines may be used (sparingly) to separate groups of
related functions. Blank lines may be omitted between a bunch of
related one-liners (e.g. a set of dummy implementations).
Use blank lines in functions, sparingly, to indicate logical
sections.
Okay: def a():\n pass\n\n\ndef b():\n pass
Okay: def a():\n pass\n\n\nasync def b():\n pass
Okay: def a():\n pass\n\n\n# Foo\n# Bar\n\ndef b():\n pass
Okay: default = 1\nfoo = 1
Okay: classify = 1\nfoo = 1
E301: class Foo:\n b = 0\n def bar():\n pass
E302: def a():\n pass\n\ndef b(n):\n pass
E302: def a():\n pass\n\nasync def b(n):\n pass
E303: def a():\n pass\n\n\n\ndef b(n):\n pass
E303: def a():\n\n\n\n pass
E304: @decorator\n\ndef a():\n pass
E305: def a():\n pass\na()
E306: def a():\n def b():\n pass\n def c():\n pass
""" # noqa
top_level_lines = BLANK_LINES_CONFIG['top_level']
method_lines = BLANK_LINES_CONFIG['method']
if not previous_logical and blank_before < top_level_lines:
return # Don't expect blank lines before the first line
if previous_logical.startswith('@'):
if blank_lines:
yield 0, "E304 blank lines found after function decorator"
elif (blank_lines > top_level_lines or
(indent_level and blank_lines == method_lines + 1)
):
yield 0, "E303 too many blank lines (%d)" % blank_lines
elif STARTSWITH_TOP_LEVEL_REGEX.match(logical_line):
# allow a group of one-liners
if (
_is_one_liner(logical_line, indent_level, lines, line_number) and
blank_before == 0
):
return
if indent_level:
if not (blank_before == method_lines or
previous_indent_level < indent_level or
DOCSTRING_REGEX.match(previous_logical)
):
ancestor_level = indent_level
nested = False
# Search backwards for a def ancestor or tree root
# (top level).
for line in lines[line_number - top_level_lines::-1]:
if line.strip() and expand_indent(line) < ancestor_level:
ancestor_level = expand_indent(line)
nested = STARTSWITH_DEF_REGEX.match(line.lstrip())
if nested or ancestor_level == 0:
break
if nested:
yield 0, "E306 expected %s blank line before a " \
"nested definition, found 0" % (method_lines,)
else:
yield 0, "E301 expected %s blank line, found 0" % (
method_lines,)
elif blank_before != top_level_lines:
yield 0, "E302 expected %s blank lines, found %d" % (
top_level_lines, blank_before)
elif (logical_line and
not indent_level and
blank_before != top_level_lines and
previous_unindented_logical_line.startswith(('def ', 'class '))
):
yield 0, "E305 expected %s blank lines after " \
"class or function definition, found %d" % (
top_level_lines, blank_before)
@register_check
def extraneous_whitespace(logical_line):
r"""Avoid extraneous whitespace.
Avoid extraneous whitespace in these situations:
- Immediately inside parentheses, brackets or braces.
- Immediately before a comma, semicolon, or colon.
Okay: spam(ham[1], {eggs: 2})
E201: spam( ham[1], {eggs: 2})
E201: spam(ham[ 1], {eggs: 2})
E201: spam(ham[1], { eggs: 2})
E202: spam(ham[1], {eggs: 2} )
E202: spam(ham[1 ], {eggs: 2})
E202: spam(ham[1], {eggs: 2 })
E203: if x == 4: print x, y; x, y = y , x
E203: if x == 4: print x, y ; x, y = y, x
E203: if x == 4 : print x, y; x, y = y, x
"""
line = logical_line
for match in EXTRANEOUS_WHITESPACE_REGEX.finditer(line):
text = match.group()
char = text.strip()
found = match.start()
if text == char + ' ':
# assert char in '([{'
yield found + 1, "E201 whitespace after '%s'" % char
elif line[found - 1] != ',':
code = ('E202' if char in '}])' else 'E203') # if char in ',;:'
yield found, "%s whitespace before '%s'" % (code, char)
@register_check
def whitespace_around_keywords(logical_line):
r"""Avoid extraneous whitespace around keywords.
Okay: True and False
E271: True and False
E272: True and False
E273: True and\tFalse
E274: True\tand False
"""
for match in KEYWORD_REGEX.finditer(logical_line):
before, after = match.groups()
if '\t' in before:
yield match.start(1), "E274 tab before keyword"
elif len(before) > 1:
yield match.start(1), "E272 multiple spaces before keyword"
if '\t' in after:
yield match.start(2), "E273 tab after keyword"
elif len(after) > 1:
yield match.start(2), "E271 multiple spaces after keyword"
@register_check
def missing_whitespace_after_import_keyword(logical_line):
r"""Multiple imports in form from x import (a, b, c) should have
space between import statement and parenthesised name list.
Okay: from foo import (bar, baz)
E275: from foo import(bar, baz)
E275: from importable.module import(bar, baz)
"""
line = logical_line
indicator = ' import('
if line.startswith('from '):
found = line.find(indicator)
if -1 < found:
pos = found + len(indicator) - 1
yield pos, "E275 missing whitespace after keyword"
@register_check
def missing_whitespace(logical_line):
r"""Each comma, semicolon or colon should be followed by whitespace.
Okay: [a, b]
Okay: (3,)
Okay: a[1:4]
Okay: a[:4]
Okay: a[1:]
Okay: a[1:4:2]
E231: ['a','b']
E231: foo(bar,baz)
E231: [{'a':'b'}]
"""
line = logical_line
for index in range(len(line) - 1):
char = line[index]
next_char = line[index + 1]
if char in ',;:' and next_char not in WHITESPACE:
before = line[:index]
if char == ':' and before.count('[') > before.count(']') and \
before.rfind('{') < before.rfind('['):
continue # Slice syntax, no space required
if char == ',' and next_char == ')':
continue # Allow tuple with only one element: (3,)
if char == ':' and next_char == '=' and sys.version_info >= (3, 8):
continue # Allow assignment expression
yield index, "E231 missing whitespace after '%s'" % char
@register_check
def indentation(logical_line, previous_logical, indent_char,
indent_level, previous_indent_level,
indent_size, indent_size_str):
r"""Use indent_size (PEP8 says 4) spaces per indentation level.
For really old code that you don't want to mess up, you can continue
to use 8-space tabs.
Okay: a = 1
Okay: if a == 0:\n a = 1
E111: a = 1
E114: # a = 1
Okay: for item in items:\n pass
E112: for item in items:\npass
E115: for item in items:\n# Hi\n pass
Okay: a = 1\nb = 2
E113: a = 1\n b = 2
E116: a = 1\n # b = 2
"""
c = 0 if logical_line else 3
tmpl = "E11%d %s" if logical_line else "E11%d %s (comment)"
if indent_level % indent_size:
yield 0, tmpl % (
1 + c,
"indentation is not a multiple of " + indent_size_str,
)
indent_expect = previous_logical.endswith(':')
if indent_expect and indent_level <= previous_indent_level:
yield 0, tmpl % (2 + c, "expected an indented block")
elif not indent_expect and indent_level > previous_indent_level:
yield 0, tmpl % (3 + c, "unexpected indentation")
if indent_expect:
expected_indent_amount = 8 if indent_char == '\t' else 4
expected_indent_level = previous_indent_level + expected_indent_amount
if indent_level > expected_indent_level:
yield 0, tmpl % (7, 'over-indented')
@register_check
def continued_indentation(logical_line, tokens, indent_level, hang_closing,
indent_char, indent_size, indent_size_str, noqa,
verbose):
r"""Continuation lines indentation.
Continuation lines should align wrapped elements either vertically
using Python's implicit line joining inside parentheses, brackets
and braces, or using a hanging indent.
When using a hanging indent these considerations should be applied:
- there should be no arguments on the first line, and
- further indentation should be used to clearly distinguish itself
as a continuation line.
Okay: a = (\n)
E123: a = (\n )
Okay: a = (\n 42)
E121: a = (\n 42)
E122: a = (\n42)
E123: a = (\n 42\n )
E124: a = (24,\n 42\n)
E125: if (\n b):\n pass
E126: a = (\n 42)
E127: a = (24,\n 42)
E128: a = (24,\n 42)
E129: if (a or\n b):\n pass
E131: a = (\n 42\n 24)
"""
first_row = tokens[0][2][0]
nrows = 1 + tokens[-1][2][0] - first_row
if noqa or nrows == 1:
return
# indent_next tells us whether the next block is indented; assuming
# that it is indented by 4 spaces, then we should not allow 4-space
# indents on the final continuation line; in turn, some other
# indents are allowed to have an extra 4 spaces.
indent_next = logical_line.endswith(':')
row = depth = 0
valid_hangs = (indent_size,) if indent_char != '\t' \
else (indent_size, indent_size * 2)
# remember how many brackets were opened on each line
parens = [0] * nrows
# relative indents of physical lines
rel_indent = [0] * nrows
# for each depth, collect a list of opening rows
open_rows = [[0]]
# for each depth, memorize the hanging indentation
hangs = [None]
# visual indents
indent_chances = {}
last_indent = tokens[0][2]
visual_indent = None
last_token_multiline = False
# for each depth, memorize the visual indent column
indent = [last_indent[1]]
if verbose >= 3:
print(">>> " + tokens[0][4].rstrip())
for token_type, text, start, end, line in tokens:
newline = row < start[0] - first_row
if newline:
row = start[0] - first_row
newline = not last_token_multiline and token_type not in NEWLINE
if newline:
# this is the beginning of a continuation line.
last_indent = start
if verbose >= 3:
print("... " + line.rstrip())
# record the initial indent.
rel_indent[row] = expand_indent(line) - indent_level
# identify closing bracket
close_bracket = (token_type == tokenize.OP and text in ']})')
# is the indent relative to an opening bracket line?
for open_row in reversed(open_rows[depth]):
hang = rel_indent[row] - rel_indent[open_row]
hanging_indent = hang in valid_hangs
if hanging_indent:
break
if hangs[depth]:
hanging_indent = (hang == hangs[depth])
# is there any chance of visual indent?
visual_indent = (not close_bracket and hang > 0 and
indent_chances.get(start[1]))
if close_bracket and indent[depth]:
# closing bracket for visual indent
if start[1] != indent[depth]:
yield (start, "E124 closing bracket does not match "
"visual indentation")
elif close_bracket and not hang:
# closing bracket matches indentation of opening
# bracket's line
if hang_closing:
yield start, "E133 closing bracket is missing indentation"
elif indent[depth] and start[1] < indent[depth]:
if visual_indent is not True:
# visual indent is broken
yield (start, "E128 continuation line "
"under-indented for visual indent")
elif hanging_indent or (indent_next and
rel_indent[row] == 2 * indent_size):
# hanging indent is verified
if close_bracket and not hang_closing:
yield (start, "E123 closing bracket does not match "
"indentation of opening bracket's line")
hangs[depth] = hang
elif visual_indent is True:
# visual indent is verified
indent[depth] = start[1]
elif visual_indent in (text, str):
# ignore token lined up with matching one from a
# previous line
pass
else:
# indent is broken
if hang <= 0:
error = "E122", "missing indentation or outdented"
elif indent[depth]:
error = "E127", "over-indented for visual indent"
elif not close_bracket and hangs[depth]:
error = "E131", "unaligned for hanging indent"
else:
hangs[depth] = hang
if hang > indent_size:
error = "E126", "over-indented for hanging indent"
else:
error = "E121", "under-indented for hanging indent"
yield start, "%s continuation line %s" % error
# look for visual indenting
if (parens[row] and
token_type not in (tokenize.NL, tokenize.COMMENT) and
not indent[depth]):
indent[depth] = start[1]
indent_chances[start[1]] = True
if verbose >= 4:
print("bracket depth %s indent to %s" % (depth, start[1]))
# deal with implicit string concatenation
elif (token_type in (tokenize.STRING, tokenize.COMMENT) or
text in ('u', 'ur', 'b', 'br')):
indent_chances[start[1]] = str
# visual indent after assert/raise/with
elif not row and not depth and text in ["assert", "raise", "with"]:
indent_chances[end[1] + 1] = True
# special case for the "if" statement because len("if (") == 4
elif not indent_chances and not row and not depth and text == 'if':
indent_chances[end[1] + 1] = True
elif text == ':' and line[end[1]:].isspace():
open_rows[depth].append(row)
# keep track of bracket depth
if token_type == tokenize.OP:
if text in '([{':
depth += 1
indent.append(0)
hangs.append(None)
if len(open_rows) == depth:
open_rows.append([])
open_rows[depth].append(row)
parens[row] += 1
if verbose >= 4:
print("bracket depth %s seen, col %s, visual min = %s" %
(depth, start[1], indent[depth]))
elif text in ')]}' and depth > 0:
# parent indents should not be more than this one
prev_indent = indent.pop() or last_indent[1]
hangs.pop()
for d in range(depth):
if indent[d] > prev_indent:
indent[d] = 0
for ind in list(indent_chances):
if ind >= prev_indent:
del indent_chances[ind]
del open_rows[depth + 1:]
depth -= 1
if depth:
indent_chances[indent[depth]] = True
for idx in range(row, -1, -1):
if parens[idx]:
parens[idx] -= 1
break
assert len(indent) == depth + 1
if start[1] not in indent_chances:
# allow lining up tokens
indent_chances[start[1]] = text
last_token_multiline = (start[0] != end[0])
if last_token_multiline:
rel_indent[end[0] - first_row] = rel_indent[row]
if indent_next and expand_indent(line) == indent_level + indent_size:
pos = (start[0], indent[0] + indent_size)
if visual_indent:
code = "E129 visually indented line"
else:
code = "E125 continuation line"
yield pos, "%s with same indent as next logical line" % code
@register_check
def whitespace_before_parameters(logical_line, tokens):
r"""Avoid extraneous whitespace.
Avoid extraneous whitespace in the following situations:
- before the open parenthesis that starts the argument list of a
function call.
- before the open parenthesis that starts an indexing or slicing.
Okay: spam(1)
E211: spam (1)
Okay: dict['key'] = list[index]
E211: dict ['key'] = list[index]
E211: dict['key'] = list [index]
"""
prev_type, prev_text, __, prev_end, __ = tokens[0]
for index in range(1, len(tokens)):
token_type, text, start, end, __ = tokens[index]
if (token_type == tokenize.OP and
text in '([' and
start != prev_end and
(prev_type == tokenize.NAME or prev_text in '}])') and
# Syntax "class A (B):" is allowed, but avoid it
(index < 2 or tokens[index - 2][1] != 'class') and
# Allow "return (a.foo for a in range(5))"
not keyword.iskeyword(prev_text)):
yield prev_end, "E211 whitespace before '%s'" % text
prev_type = token_type
prev_text = text
prev_end = end
@register_check
def whitespace_around_operator(logical_line):
r"""Avoid extraneous whitespace around an operator.
Okay: a = 12 + 3
E221: a = 4 + 5
E222: a = 4 + 5
E223: a = 4\t+ 5
E224: a = 4 +\t5
"""
for match in OPERATOR_REGEX.finditer(logical_line):
before, after = match.groups()
if '\t' in before:
yield match.start(1), "E223 tab before operator"
elif len(before) > 1:
yield match.start(1), "E221 multiple spaces before operator"
if '\t' in after:
yield match.start(2), "E224 tab after operator"
elif len(after) > 1:
yield match.start(2), "E222 multiple spaces after operator"
@register_check
def missing_whitespace_around_operator(logical_line, tokens):
r"""Surround operators with a single space on either side.
- Always surround these binary operators with a single space on
either side: assignment (=), augmented assignment (+=, -= etc.),
comparisons (==, <, >, !=, <=, >=, in, not in, is, is not),
Booleans (and, or, not).
- If operators with different priorities are used, consider adding
whitespace around the operators with the lowest priorities.
Okay: i = i + 1
Okay: submitted += 1
Okay: x = x * 2 - 1
Okay: hypot2 = x * x + y * y
Okay: c = (a + b) * (a - b)
Okay: foo(bar, key='word', *args, **kwargs)
Okay: alpha[:-i]
E225: i=i+1
E225: submitted +=1
E225: x = x /2 - 1
E225: z = x **y
E225: z = 1and 1
E226: c = (a+b) * (a-b)
E226: hypot2 = x*x + y*y
E227: c = a|b
E228: msg = fmt%(errno, errmsg)
"""
parens = 0
need_space = False
prev_type = tokenize.OP
prev_text = prev_end = None
operator_types = (tokenize.OP, tokenize.NAME)
for token_type, text, start, end, line in tokens:
if token_type in SKIP_COMMENTS:
continue
if text in ('(', 'lambda'):
parens += 1
elif text == ')':
parens -= 1
if need_space:
if start != prev_end:
# Found a (probably) needed space
if need_space is not True and not need_space[1]:
yield (need_space[0],
"E225 missing whitespace around operator")
need_space = False
elif text == '>' and prev_text in ('<', '-'):
# Tolerate the "<>" operator, even if running Python 3
# Deal with Python 3's annotated return value "->"
pass
elif (
# def f(a, /, b):
# ^
# def f(a, b, /):
# ^
prev_text == '/' and text in {',', ')'} or
# def f(a, b, /):
# ^
prev_text == ')' and text == ':'
):
# Tolerate the "/" operator in function definition
# For more info see PEP570
pass
else:
if need_space is True or need_space[1]:
# A needed trailing space was not found
yield prev_end, "E225 missing whitespace around operator"
elif prev_text != '**':
code, optype = 'E226', 'arithmetic'
if prev_text == '%':
code, optype = 'E228', 'modulo'
elif prev_text not in ARITHMETIC_OP:
code, optype = 'E227', 'bitwise or shift'
yield (need_space[0], "%s missing whitespace "
"around %s operator" % (code, optype))
need_space = False
elif token_type in operator_types and prev_end is not None:
if text == '=' and parens:
# Allow keyword args or defaults: foo(bar=None).
pass
elif text in WS_NEEDED_OPERATORS:
need_space = True
elif text in UNARY_OPERATORS:
# Check if the operator is used as a binary operator
# Allow unary operators: -123, -x, +1.
# Allow argument unpacking: foo(*args, **kwargs).
if (prev_text in '}])' if prev_type == tokenize.OP
else prev_text not in KEYWORDS):
need_space = None
elif text in WS_OPTIONAL_OPERATORS:
need_space = None
if need_space is None:
# Surrounding space is optional, but ensure that
# trailing space matches opening space
need_space = (prev_end, start != prev_end)
elif need_space and start == prev_end:
# A needed opening space was not found
yield prev_end, "E225 missing whitespace around operator"
need_space = False
prev_type = token_type
prev_text = text
prev_end = end
@register_check
def whitespace_around_comma(logical_line):
r"""Avoid extraneous whitespace after a comma or a colon.
Note: these checks are disabled by default
Okay: a = (1, 2)
E241: a = (1, 2)
E242: a = (1,\t2)
"""
line = logical_line
for m in WHITESPACE_AFTER_COMMA_REGEX.finditer(line):
found = m.start() + 1
if '\t' in m.group():
yield found, "E242 tab after '%s'" % m.group()[0]
else:
yield found, "E241 multiple spaces after '%s'" % m.group()[0]
@register_check
def whitespace_around_named_parameter_equals(logical_line, tokens):
r"""Don't use spaces around the '=' sign in function arguments.
Don't use spaces around the '=' sign when used to indicate a
keyword argument or a default parameter value, except when
using a type annotation.
Okay: def complex(real, imag=0.0):
Okay: return magic(r=real, i=imag)
Okay: boolean(a == b)
Okay: boolean(a != b)
Okay: boolean(a <= b)
Okay: boolean(a >= b)
Okay: def foo(arg: int = 42):
Okay: async def foo(arg: int = 42):
E251: def complex(real, imag = 0.0):
E251: return magic(r = real, i = imag)
E252: def complex(real, image: float=0.0):
"""
parens = 0
no_space = False
require_space = False
prev_end = None
annotated_func_arg = False
in_def = bool(STARTSWITH_DEF_REGEX.match(logical_line))
message = "E251 unexpected spaces around keyword / parameter equals"
missing_message = "E252 missing whitespace around parameter equals"
for token_type, text, start, end, line in tokens:
if token_type == tokenize.NL:
continue
if no_space:
no_space = False
if start != prev_end:
yield (prev_end, message)
if require_space:
require_space = False
if start == prev_end:
yield (prev_end, missing_message)
if token_type == tokenize.OP:
if text in '([':
parens += 1
elif text in ')]':
parens -= 1
elif in_def and text == ':' and parens == 1:
annotated_func_arg = True
elif parens == 1 and text == ',':
annotated_func_arg = False
elif parens and text == '=':
if annotated_func_arg and parens == 1:
require_space = True
if start == prev_end:
yield (prev_end, missing_message)
else:
no_space = True
if start != prev_end:
yield (prev_end, message)
if not parens:
annotated_func_arg = False
prev_end = end
@register_check
def whitespace_before_comment(logical_line, tokens):
r"""Separate inline comments by at least two spaces.
An inline comment is a comment on the same line as a statement.
Inline comments should be separated by at least two spaces from the
statement. They should start with a # and a single space.
Each line of a block comment starts with a # and a single space
(unless it is indented text inside the comment).
Okay: x = x + 1 # Increment x
Okay: x = x + 1 # Increment x
Okay: # Block comment
E261: x = x + 1 # Increment x
E262: x = x + 1 #Increment x
E262: x = x + 1 # Increment x
E265: #Block comment
E266: ### Block comment
"""
prev_end = (0, 0)
for token_type, text, start, end, line in tokens:
if token_type == tokenize.COMMENT:
inline_comment = line[:start[1]].strip()
if inline_comment:
if prev_end[0] == start[0] and start[1] < prev_end[1] + 2:
yield (prev_end,
"E261 at least two spaces before inline comment")
symbol, sp, comment = text.partition(' ')
bad_prefix = symbol not in '#:' and (symbol.lstrip('#')[:1] or '#')
if inline_comment:
if bad_prefix or comment[:1] in WHITESPACE:
yield start, "E262 inline comment should start with '# '"
elif bad_prefix and (bad_prefix != '!' or start[0] > 1):
if bad_prefix != '#':
yield start, "E265 block comment should start with '# '"
elif comment:
yield start, "E266 too many leading '#' for block comment"
elif token_type != tokenize.NL:
prev_end = end
@register_check
def imports_on_separate_lines(logical_line):
r"""Place imports on separate lines.
Okay: import os\nimport sys
E401: import sys, os
Okay: from subprocess import Popen, PIPE
Okay: from myclas import MyClass
Okay: from foo.bar.yourclass import YourClass
Okay: import myclass
Okay: import foo.bar.yourclass
"""
line = logical_line
if line.startswith('import '):
found = line.find(',')
if -1 < found and ';' not in line[:found]:
yield found, "E401 multiple imports on one line"
@register_check
def module_imports_on_top_of_file(
logical_line, indent_level, checker_state, noqa):
r"""Place imports at the top of the file.
Always put imports at the top of the file, just after any module
comments and docstrings, and before module globals and constants.
Okay: import os
Okay: # this is a comment\nimport os
Okay: '''this is a module docstring'''\nimport os
Okay: r'''this is a module docstring'''\nimport os
Okay:
try:\n\timport x\nexcept ImportError:\n\tpass\nelse:\n\tpass\nimport y
Okay:
try:\n\timport x\nexcept ImportError:\n\tpass\nfinally:\n\tpass\nimport y
E402: a=1\nimport os
E402: 'One string'\n"Two string"\nimport os
E402: a=1\nfrom sys import x
Okay: if x:\n import os
""" # noqa
def is_string_literal(line):
if line[0] in 'uUbB':
line = line[1:]
if line and line[0] in 'rR':
line = line[1:]
return line and (line[0] == '"' or line[0] == "'")
allowed_keywords = (
'try', 'except', 'else', 'finally', 'with', 'if', 'elif')
if indent_level: # Allow imports in conditional statement/function
return
if not logical_line: # Allow empty lines or comments
return
if noqa:
return
line = logical_line
if line.startswith('import ') or line.startswith('from '):
if checker_state.get('seen_non_imports', False):
yield 0, "E402 module level import not at top of file"
elif re.match(DUNDER_REGEX, line):
return
elif any(line.startswith(kw) for kw in allowed_keywords):
# Allow certain keywords intermixed with imports in order to
# support conditional or filtered importing
return
elif is_string_literal(line):
# The first literal is a docstring, allow it. Otherwise, report
# error.
if checker_state.get('seen_docstring', False):
checker_state['seen_non_imports'] = True
else:
checker_state['seen_docstring'] = True
else:
checker_state['seen_non_imports'] = True
@register_check
def compound_statements(logical_line):
r"""Compound statements (on the same line) are generally
discouraged.
While sometimes it's okay to put an if/for/while with a small body
on the same line, never do this for multi-clause statements.
Also avoid folding such long lines!
Always use a def statement instead of an assignment statement that
binds a lambda expression directly to a name.
Okay: if foo == 'blah':\n do_blah_thing()
Okay: do_one()
Okay: do_two()
Okay: do_three()
E701: if foo == 'blah': do_blah_thing()
E701: for x in lst: total += x
E701: while t < 10: t = delay()
E701: if foo == 'blah': do_blah_thing()
E701: else: do_non_blah_thing()
E701: try: something()
E701: finally: cleanup()
E701: if foo == 'blah': one(); two(); three()
E702: do_one(); do_two(); do_three()
E703: do_four(); # useless semicolon
E704: def f(x): return 2*x
E731: f = lambda x: 2*x
"""
line = logical_line
last_char = len(line) - 1
found = line.find(':')
prev_found = 0
counts = {char: 0 for char in '{}[]()'}
while -1 < found < last_char:
update_counts(line[prev_found:found], counts)
if ((counts['{'] <= counts['}'] and # {'a': 1} (dict)
counts['['] <= counts[']'] and # [1:2] (slice)
counts['('] <= counts[')']) and # (annotation)
not (sys.version_info >= (3, 8) and
line[found + 1] == '=')): # assignment expression
lambda_kw = LAMBDA_REGEX.search(line, 0, found)
if lambda_kw:
before = line[:lambda_kw.start()].rstrip()
if before[-1:] == '=' and isidentifier(before[:-1].strip()):
yield 0, ("E731 do not assign a lambda expression, use a "
"def")
break
if STARTSWITH_DEF_REGEX.match(line):
yield 0, "E704 multiple statements on one line (def)"
elif STARTSWITH_INDENT_STATEMENT_REGEX.match(line):
yield found, "E701 multiple statements on one line (colon)"
prev_found = found
found = line.find(':', found + 1)
found = line.find(';')
while -1 < found:
if found < last_char:
yield found, "E702 multiple statements on one line (semicolon)"
else:
yield found, "E703 statement ends with a semicolon"
found = line.find(';', found + 1)
@register_check
def explicit_line_join(logical_line, tokens):
r"""Avoid explicit line join between brackets.
The preferred way of wrapping long lines is by using Python's
implied line continuation inside parentheses, brackets and braces.
Long lines can be broken over multiple lines by wrapping expressions
in parentheses. These should be used in preference to using a
backslash for line continuation.
E502: aaa = [123, \\n 123]
E502: aaa = ("bbb " \\n "ccc")
Okay: aaa = [123,\n 123]
Okay: aaa = ("bbb "\n "ccc")
Okay: aaa = "bbb " \\n "ccc"
Okay: aaa = 123 # \\
"""
prev_start = prev_end = parens = 0
comment = False
backslash = None
for token_type, text, start, end, line in tokens:
if token_type == tokenize.COMMENT:
comment = True
if start[0] != prev_start and parens and backslash and not comment:
yield backslash, "E502 the backslash is redundant between brackets"
if end[0] != prev_end:
if line.rstrip('\r\n').endswith('\\'):
backslash = (end[0], len(line.splitlines()[-1]) - 1)
else:
backslash = None
prev_start = prev_end = end[0]
else:
prev_start = start[0]
if token_type == tokenize.OP:
if text in '([{':
parens += 1
elif text in ')]}':
parens -= 1
_SYMBOLIC_OPS = frozenset("()[]{},:.;@=%~") | frozenset(("...",))
def _is_binary_operator(token_type, text):
is_op_token = token_type == tokenize.OP
is_conjunction = text in ['and', 'or']
# NOTE(sigmavirus24): Previously the not_a_symbol check was executed
# conditionally. Since it is now *always* executed, text may be
# None. In that case we get a TypeError for `text not in str`.
not_a_symbol = text and text not in _SYMBOLIC_OPS
# The % character is strictly speaking a binary operator, but the
# common usage seems to be to put it next to the format parameters,
# after a line break.
return ((is_op_token or is_conjunction) and not_a_symbol)
def _break_around_binary_operators(tokens):
"""Private function to reduce duplication.
This factors out the shared details between
:func:`break_before_binary_operator` and
:func:`break_after_binary_operator`.
"""
line_break = False
unary_context = True
# Previous non-newline token types and text
previous_token_type = None
previous_text = None
for token_type, text, start, end, line in tokens:
if token_type == tokenize.COMMENT:
continue
if ('\n' in text or '\r' in text) and token_type != tokenize.STRING:
line_break = True
else:
yield (token_type, text, previous_token_type, previous_text,
line_break, unary_context, start)
unary_context = text in '([{,;'
line_break = False
previous_token_type = token_type
previous_text = text
@register_check
def break_before_binary_operator(logical_line, tokens):
r"""
Avoid breaks before binary operators.
The preferred place to break around a binary operator is after the
operator, not before it.
W503: (width == 0\n + height == 0)
W503: (width == 0\n and height == 0)
W503: var = (1\n & ~2)
W503: var = (1\n / -2)
W503: var = (1\n + -1\n + -2)
Okay: foo(\n -x)
Okay: foo(x\n [])
Okay: x = '''\n''' + ''
Okay: foo(x,\n -y)
Okay: foo(x, # comment\n -y)
"""
for context in _break_around_binary_operators(tokens):
(token_type, text, previous_token_type, previous_text,
line_break, unary_context, start) = context
if (_is_binary_operator(token_type, text) and line_break and
not unary_context and
not _is_binary_operator(previous_token_type,
previous_text)):
yield start, "W503 line break before binary operator"
@register_check
def break_after_binary_operator(logical_line, tokens):
r"""
Avoid breaks after binary operators.
The preferred place to break around a binary operator is before the
operator, not after it.
W504: (width == 0 +\n height == 0)
W504: (width == 0 and\n height == 0)
W504: var = (1 &\n ~2)
Okay: foo(\n -x)
Okay: foo(x\n [])
Okay: x = '''\n''' + ''
Okay: x = '' + '''\n'''
Okay: foo(x,\n -y)
Okay: foo(x, # comment\n -y)
The following should be W504 but unary_context is tricky with these
Okay: var = (1 /\n -2)
Okay: var = (1 +\n -1 +\n -2)
"""
prev_start = None
for context in _break_around_binary_operators(tokens):
(token_type, text, previous_token_type, previous_text,
line_break, unary_context, start) = context
if (_is_binary_operator(previous_token_type, previous_text) and
line_break and
not unary_context and
not _is_binary_operator(token_type, text)):
yield prev_start, "W504 line break after binary operator"
prev_start = start
@register_check
def comparison_to_singleton(logical_line, noqa):
r"""Comparison to singletons should use "is" or "is not".
Comparisons to singletons like None should always be done
with "is" or "is not", never the equality operators.
Okay: if arg is not None:
E711: if arg != None:
E711: if None == arg:
E712: if arg == True:
E712: if False == arg:
Also, beware of writing if x when you really mean if x is not None
-- e.g. when testing whether a variable or argument that defaults to
None was set to some other value. The other value might have a type
(such as a container) that could be false in a boolean context!
"""
match = not noqa and COMPARE_SINGLETON_REGEX.search(logical_line)
if match:
singleton = match.group(1) or match.group(3)
same = (match.group(2) == '==')
msg = "'if cond is %s:'" % (('' if same else 'not ') + singleton)
if singleton in ('None',):
code = 'E711'
else:
code = 'E712'
nonzero = ((singleton == 'True' and same) or
(singleton == 'False' and not same))
msg += " or 'if %scond:'" % ('' if nonzero else 'not ')
yield match.start(2), ("%s comparison to %s should be %s" %
(code, singleton, msg))
@register_check
def comparison_negative(logical_line):
r"""Negative comparison should be done using "not in" and "is not".
Okay: if x not in y:\n pass
Okay: assert (X in Y or X is Z)
Okay: if not (X in Y):\n pass
Okay: zz = x is not y
E713: Z = not X in Y
E713: if not X.B in Y:\n pass
E714: if not X is Y:\n pass
E714: Z = not X.B is Y
"""
match = COMPARE_NEGATIVE_REGEX.search(logical_line)
if match:
pos = match.start(1)
if match.group(2) == 'in':
yield pos, "E713 test for membership should be 'not in'"
else:
yield pos, "E714 test for object identity should be 'is not'"
@register_check
def comparison_type(logical_line, noqa):
r"""Object type comparisons should always use isinstance().
Do not compare types directly.
Okay: if isinstance(obj, int):
E721: if type(obj) is type(1):
When checking if an object is a string, keep in mind that it might
be a unicode string too! In Python 2.3, str and unicode have a
common base class, basestring, so you can do:
Okay: if isinstance(obj, basestring):
Okay: if type(a1) is type(b1):
"""
match = COMPARE_TYPE_REGEX.search(logical_line)
if match and not noqa:
inst = match.group(1)
if inst and isidentifier(inst) and inst not in SINGLETONS:
return # Allow comparison for types which are not obvious
yield match.start(), "E721 do not compare types, use 'isinstance()'"
@register_check
def bare_except(logical_line, noqa):
r"""When catching exceptions, mention specific exceptions when
possible.
Okay: except Exception:
Okay: except BaseException:
E722: except:
"""
if noqa:
return
regex = re.compile(r"except\s*:")
match = regex.match(logical_line)
if match:
yield match.start(), "E722 do not use bare 'except'"
@register_check
def ambiguous_identifier(logical_line, tokens):
r"""Never use the characters 'l', 'O', or 'I' as variable names.
In some fonts, these characters are indistinguishable from the
numerals one and zero. When tempted to use 'l', use 'L' instead.
Okay: L = 0
Okay: o = 123
Okay: i = 42
E741: l = 0
E741: O = 123
E741: I = 42
Variables can be bound in several other contexts, including class
and function definitions, 'global' and 'nonlocal' statements,
exception handlers, and 'with' and 'for' statements.
In addition, we have a special handling for function parameters.
Okay: except AttributeError as o:
Okay: with lock as L:
Okay: foo(l=12)
Okay: for a in foo(l=12):
E741: except AttributeError as O:
E741: with lock as l:
E741: global I
E741: nonlocal l
E741: def foo(l):
E741: def foo(l=12):
E741: l = foo(l=12)
E741: for l in range(10):
E742: class I(object):
E743: def l(x):
"""
is_func_def = False # Set to true if 'def' is found
parameter_parentheses_level = 0
idents_to_avoid = ('l', 'O', 'I')
prev_type, prev_text, prev_start, prev_end, __ = tokens[0]
for token_type, text, start, end, line in tokens[1:]:
ident = pos = None
# find function definitions
if prev_text == 'def':
is_func_def = True
# update parameter parentheses level
if parameter_parentheses_level == 0 and \
prev_type == tokenize.NAME and \
token_type == tokenize.OP and text == '(':
parameter_parentheses_level = 1
elif parameter_parentheses_level > 0 and \
token_type == tokenize.OP:
if text == '(':
parameter_parentheses_level += 1
elif text == ')':
parameter_parentheses_level -= 1
# identifiers on the lhs of an assignment operator
if token_type == tokenize.OP and '=' in text and \
parameter_parentheses_level == 0:
if prev_text in idents_to_avoid:
ident = prev_text
pos = prev_start
# identifiers bound to values with 'as', 'for',
# 'global', or 'nonlocal'
if prev_text in ('as', 'for', 'global', 'nonlocal'):
if text in idents_to_avoid:
ident = text
pos = start
# function parameter definitions
if is_func_def:
if text in idents_to_avoid:
ident = text
pos = start
if prev_text == 'class':
if text in idents_to_avoid:
yield start, "E742 ambiguous class definition '%s'" % text
if prev_text == 'def':
if text in idents_to_avoid:
yield start, "E743 ambiguous function definition '%s'" % text
if ident:
yield pos, "E741 ambiguous variable name '%s'" % ident
prev_type = token_type
prev_text = text
prev_start = start
@register_check
def python_3000_has_key(logical_line, noqa):
r"""The {}.has_key() method is removed in Python 3: use the 'in'
operator.
Okay: if "alph" in d:\n print d["alph"]
W601: assert d.has_key('alph')
"""
pos = logical_line.find('.has_key(')
if pos > -1 and not noqa:
yield pos, "W601 .has_key() is deprecated, use 'in'"
@register_check
def python_3000_raise_comma(logical_line):
r"""When raising an exception, use "raise ValueError('message')".
The older form is removed in Python 3.
Okay: raise DummyError("Message")
W602: raise DummyError, "Message"
"""
match = RAISE_COMMA_REGEX.match(logical_line)
if match and not RERAISE_COMMA_REGEX.match(logical_line):
yield match.end() - 1, "W602 deprecated form of raising exception"
@register_check
def python_3000_not_equal(logical_line):
r"""New code should always use != instead of <>.
The older syntax is removed in Python 3.
Okay: if a != 'no':
W603: if a <> 'no':
"""
pos = logical_line.find('<>')
if pos > -1:
yield pos, "W603 '<>' is deprecated, use '!='"
@register_check
def python_3000_backticks(logical_line):
r"""Use repr() instead of backticks in Python 3.
Okay: val = repr(1 + 2)
W604: val = `1 + 2`
"""
pos = logical_line.find('`')
if pos > -1:
yield pos, "W604 backticks are deprecated, use 'repr()'"
@register_check
def python_3000_invalid_escape_sequence(logical_line, tokens, noqa):
r"""Invalid escape sequences are deprecated in Python 3.6.
Okay: regex = r'\.png$'
W605: regex = '\.png$'
"""
if noqa:
return
# https://docs.python.org/3/reference/lexical_analysis.html#string-and-bytes-literals
valid = [
'\n',
'\\',
'\'',
'"',
'a',
'b',
'f',
'n',
'r',
't',
'v',
'0', '1', '2', '3', '4', '5', '6', '7',
'x',
# Escape sequences only recognized in string literals
'N',
'u',
'U',
]
for token_type, text, start, end, line in tokens:
if token_type == tokenize.STRING:
start_line, start_col = start
quote = text[-3:] if text[-3:] in ('"""', "'''") else text[-1]
# Extract string modifiers (e.g. u or r)
quote_pos = text.index(quote)
prefix = text[:quote_pos].lower()
start = quote_pos + len(quote)
string = text[start:-len(quote)]
if 'r' not in prefix:
pos = string.find('\\')
while pos >= 0:
pos += 1
if string[pos] not in valid:
line = start_line + string.count('\n', 0, pos)
if line == start_line:
col = start_col + len(prefix) + len(quote) + pos
else:
col = pos - string.rfind('\n', 0, pos) - 1
yield (
(line, col - 1),
"W605 invalid escape sequence '\\%s'" %
string[pos],
)
pos = string.find('\\', pos + 1)
@register_check
def python_3000_async_await_keywords(logical_line, tokens):
"""'async' and 'await' are reserved keywords starting at Python 3.7.
W606: async = 42
W606: await = 42
Okay: async def read(db):\n data = await db.fetch('SELECT ...')
"""
# The Python tokenize library before Python 3.5 recognizes
# async/await as a NAME token. Therefore, use a state machine to
# look for the possible async/await constructs as defined by the
# Python grammar:
# https://docs.python.org/3/reference/grammar.html
state = None
for token_type, text, start, end, line in tokens:
error = False
if token_type == tokenize.NL:
continue
if state is None:
if token_type == tokenize.NAME:
if text == 'async':
state = ('async_stmt', start)
elif text == 'await':
state = ('await', start)
elif (token_type == tokenize.NAME and
text in ('def', 'for')):
state = ('define', start)
elif state[0] == 'async_stmt':
if token_type == tokenize.NAME and text in ('def', 'with', 'for'):
# One of funcdef, with_stmt, or for_stmt. Return to
# looking for async/await names.
state = None
else:
error = True
elif state[0] == 'await':
if token_type == tokenize.NAME:
# An await expression. Return to looking for async/await
# names.
state = None
elif token_type == tokenize.OP and text == '(':
state = None
else:
error = True
elif state[0] == 'define':
if token_type == tokenize.NAME and text in ('async', 'await'):
error = True
else:
state = None
if error:
yield (
state[1],
"W606 'async' and 'await' are reserved keywords starting with "
"Python 3.7",
)
state = None
# Last token
if state is not None:
yield (
state[1],
"W606 'async' and 'await' are reserved keywords starting with "
"Python 3.7",
)
########################################################################
@register_check
def maximum_doc_length(logical_line, max_doc_length, noqa, tokens):
r"""Limit all doc lines to a maximum of 72 characters.
For flowing long blocks of text (docstrings or comments), limiting
the length to 72 characters is recommended.
Reports warning W505
"""
if max_doc_length is None or noqa:
return
prev_token = None
skip_lines = set()
# Skip lines that
for token_type, text, start, end, line in tokens:
if token_type not in SKIP_COMMENTS.union([tokenize.STRING]):
skip_lines.add(line)
for token_type, text, start, end, line in tokens:
# Skip lines that aren't pure strings
if token_type == tokenize.STRING and skip_lines:
continue
if token_type in (tokenize.STRING, tokenize.COMMENT):
# Only check comment-only lines
if prev_token is None or prev_token in SKIP_TOKENS:
lines = line.splitlines()
for line_num, physical_line in enumerate(lines):
if hasattr(physical_line, 'decode'): # Python 2
# The line could contain multi-byte characters
try:
physical_line = physical_line.decode('utf-8')
except UnicodeError:
pass
if start[0] + line_num == 1 and line.startswith('#!'):
return
length = len(physical_line)
chunks = physical_line.split()
if token_type == tokenize.COMMENT:
if (len(chunks) == 2 and
length - len(chunks[-1]) < MAX_DOC_LENGTH):
continue
if len(chunks) == 1 and line_num + 1 < len(lines):
if (len(chunks) == 1 and
length - len(chunks[-1]) < MAX_DOC_LENGTH):
continue
if length > max_doc_length:
doc_error = (start[0] + line_num, max_doc_length)
yield (doc_error, "W505 doc line too long "
"(%d > %d characters)"
% (length, max_doc_length))
prev_token = token_type
########################################################################
# Helper functions
########################################################################
if sys.version_info < (3,):
# Python 2: implicit encoding.
def readlines(filename):
"""Read the source code."""
with open(filename, 'rU') as f:
return f.readlines()
isidentifier = re.compile(r'[a-zA-Z_]\w*$').match
stdin_get_value = sys.stdin.read
else:
# Python 3
def readlines(filename):
"""Read the source code."""
try:
with tokenize.open(filename) as f:
return f.readlines()
except (LookupError, SyntaxError, UnicodeError):
# Fall back if file encoding is improperly declared
with open(filename, encoding='latin-1') as f:
return f.readlines()
isidentifier = str.isidentifier
def stdin_get_value():
"""Read the value from stdin."""
return TextIOWrapper(sys.stdin.buffer, errors='ignore').read()
noqa = lru_cache(512)(re.compile(r'# no(?:qa|pep8)\b', re.I).search)
def expand_indent(line):
r"""Return the amount of indentation.
Tabs are expanded to the next multiple of 8.
>>> expand_indent(' ')
4
>>> expand_indent('\t')
8
>>> expand_indent(' \t')
8
>>> expand_indent(' \t')
16
"""
line = line.rstrip('\n\r')
if '\t' not in line:
return len(line) - len(line.lstrip())
result = 0
for char in line:
if char == '\t':
result = result // 8 * 8 + 8
elif char == ' ':
result += 1
else:
break
return result
def mute_string(text):
"""Replace contents with 'xxx' to prevent syntax matching.
>>> mute_string('"abc"')
'"xxx"'
>>> mute_string("'''abc'''")
"'''xxx'''"
>>> mute_string("r'abc'")
"r'xxx'"
"""
# String modifiers (e.g. u or r)
start = text.index(text[-1]) + 1
end = len(text) - 1
# Triple quotes
if text[-3:] in ('"""', "'''"):
start += 2
end -= 2
return text[:start] + 'x' * (end - start) + text[end:]
def parse_udiff(diff, patterns=None, parent='.'):
"""Return a dictionary of matching lines."""
# For each file of the diff, the entry key is the filename,
# and the value is a set of row numbers to consider.
rv = {}
path = nrows = None
for line in diff.splitlines():
if nrows:
if line[:1] != '-':
nrows -= 1
continue
if line[:3] == '@@ ':
hunk_match = HUNK_REGEX.match(line)
(row, nrows) = [int(g or '1') for g in hunk_match.groups()]
rv[path].update(range(row, row + nrows))
elif line[:3] == '+++':
path = line[4:].split('\t', 1)[0]
# Git diff will use (i)ndex, (w)ork tree, (c)ommit and
# (o)bject instead of a/b/c/d as prefixes for patches
if path[:2] in ('b/', 'w/', 'i/'):
path = path[2:]
rv[path] = set()
return {
os.path.join(parent, filepath): rows
for (filepath, rows) in rv.items()
if rows and filename_match(filepath, patterns)
}
def normalize_paths(value, parent=os.curdir):
"""Parse a comma-separated list of paths.
Return a list of absolute paths.
"""
if not value:
return []
if isinstance(value, list):
return value
paths = []
for path in value.split(','):
path = path.strip()
if '/' in path:
path = os.path.abspath(os.path.join(parent, path))
paths.append(path.rstrip('/'))
return paths
def filename_match(filename, patterns, default=True):
"""Check if patterns contains a pattern that matches filename.
If patterns is unspecified, this always returns True.
"""
if not patterns:
return default
return any(fnmatch(filename, pattern) for pattern in patterns)
def update_counts(s, counts):
r"""Adds one to the counts of each appearance of characters in s,
for characters in counts"""
for char in s:
if char in counts:
counts[char] += 1
def _is_eol_token(token):
return token[0] in NEWLINE or token[4][token[3][1]:].lstrip() == '\\\n'
########################################################################
# Framework to run all checks
########################################################################
class Checker(object):
"""Load a Python source file, tokenize it, check coding style."""
def __init__(self, filename=None, lines=None,
options=None, report=None, **kwargs):
if options is None:
options = StyleGuide(kwargs).options
else:
assert not kwargs
self._io_error = None
self._physical_checks = options.physical_checks
self._logical_checks = options.logical_checks
self._ast_checks = options.ast_checks
self.max_line_length = options.max_line_length
self.max_doc_length = options.max_doc_length
self.indent_size = options.indent_size
self.multiline = False # in a multiline string?
self.hang_closing = options.hang_closing
self.indent_size = options.indent_size
self.indent_size_str = ({2: 'two', 4: 'four', 8: 'eight'}
.get(self.indent_size, str(self.indent_size)))
self.verbose = options.verbose
self.filename = filename
# Dictionary where a checker can store its custom state.
self._checker_states = {}
if filename is None:
self.filename = 'stdin'
self.lines = lines or []
elif filename == '-':
self.filename = 'stdin'
self.lines = stdin_get_value().splitlines(True)
elif lines is None:
try:
self.lines = readlines(filename)
except IOError:
(exc_type, exc) = sys.exc_info()[:2]
self._io_error = '%s: %s' % (exc_type.__name__, exc)
self.lines = []
else:
self.lines = lines
if self.lines:
ord0 = ord(self.lines[0][0])
if ord0 in (0xef, 0xfeff): # Strip the UTF-8 BOM
if ord0 == 0xfeff:
self.lines[0] = self.lines[0][1:]
elif self.lines[0][:3] == '\xef\xbb\xbf':
self.lines[0] = self.lines[0][3:]
self.report = report or options.report
self.report_error = self.report.error
self.noqa = False
def report_invalid_syntax(self):
"""Check if the syntax is valid."""
(exc_type, exc) = sys.exc_info()[:2]
if len(exc.args) > 1:
offset = exc.args[1]
if len(offset) > 2:
offset = offset[1:3]
else:
offset = (1, 0)
self.report_error(offset[0], offset[1] or 0,
'E901 %s: %s' % (exc_type.__name__, exc.args[0]),
self.report_invalid_syntax)
def readline(self):
"""Get the next line from the input buffer."""
if self.line_number >= self.total_lines:
return ''
line = self.lines[self.line_number]
self.line_number += 1
if self.indent_char is None and line[:1] in WHITESPACE:
self.indent_char = line[0]
return line
def run_check(self, check, argument_names):
"""Run a check plugin."""
arguments = []
for name in argument_names:
arguments.append(getattr(self, name))
return check(*arguments)
def init_checker_state(self, name, argument_names):
"""Prepare custom state for the specific checker plugin."""
if 'checker_state' in argument_names:
self.checker_state = self._checker_states.setdefault(name, {})
def check_physical(self, line):
"""Run all physical checks on a raw input line."""
self.physical_line = line
for name, check, argument_names in self._physical_checks:
self.init_checker_state(name, argument_names)
result = self.run_check(check, argument_names)
if result is not None:
(offset, text) = result
self.report_error(self.line_number, offset, text, check)
if text[:4] == 'E101':
self.indent_char = line[0]
def build_tokens_line(self):
"""Build a logical line from tokens."""
logical = []
comments = []
length = 0
prev_row = prev_col = mapping = None
for token_type, text, start, end, line in self.tokens:
if token_type in SKIP_TOKENS:
continue
if not mapping:
mapping = [(0, start)]
if token_type == tokenize.COMMENT:
comments.append(text)
continue
if token_type == tokenize.STRING:
text = mute_string(text)
if prev_row:
(start_row, start_col) = start
if prev_row != start_row: # different row
prev_text = self.lines[prev_row - 1][prev_col - 1]
if prev_text == ',' or (prev_text not in '{[(' and
text not in '}])'):
text = ' ' + text
elif prev_col != start_col: # different column
text = line[prev_col:start_col] + text
logical.append(text)
length += len(text)
mapping.append((length, end))
(prev_row, prev_col) = end
self.logical_line = ''.join(logical)
self.noqa = comments and noqa(''.join(comments))
return mapping
def check_logical(self):
"""Build a line from tokens and run all logical checks on it."""
self.report.increment_logical_line()
mapping = self.build_tokens_line()
if not mapping:
return
mapping_offsets = [offset for offset, _ in mapping]
(start_row, start_col) = mapping[0][1]
start_line = self.lines[start_row - 1]
self.indent_level = expand_indent(start_line[:start_col])
if self.blank_before < self.blank_lines:
self.blank_before = self.blank_lines
if self.verbose >= 2:
print(self.logical_line[:80].rstrip())
for name, check, argument_names in self._logical_checks:
if self.verbose >= 4:
print(' ' + name)
self.init_checker_state(name, argument_names)
for offset, text in self.run_check(check, argument_names) or ():
if not isinstance(offset, tuple):
# As mappings are ordered, bisecting is a fast way
# to find a given offset in them.
token_offset, pos = mapping[bisect.bisect_left(
mapping_offsets, offset)]
offset = (pos[0], pos[1] + offset - token_offset)
self.report_error(offset[0], offset[1], text, check)
if self.logical_line:
self.previous_indent_level = self.indent_level
self.previous_logical = self.logical_line
if not self.indent_level:
self.previous_unindented_logical_line = self.logical_line
self.blank_lines = 0
self.tokens = []
def check_ast(self):
"""Build the file's AST and run all AST checks."""
try:
tree = compile(''.join(self.lines), '', 'exec', PyCF_ONLY_AST)
except (ValueError, SyntaxError, TypeError):
return self.report_invalid_syntax()
for name, cls, __ in self._ast_checks:
checker = cls(tree, self.filename)
for lineno, offset, text, check in checker.run():
if not self.lines or not noqa(self.lines[lineno - 1]):
self.report_error(lineno, offset, text, check)
def generate_tokens(self):
"""Tokenize file, run physical line checks and yield tokens."""
if self._io_error:
self.report_error(1, 0, 'E902 %s' % self._io_error, readlines)
tokengen = tokenize.generate_tokens(self.readline)
try:
prev_physical = ''
for token in tokengen:
if token[2][0] > self.total_lines:
return
self.noqa = token[4] and noqa(token[4])
self.maybe_check_physical(token, prev_physical)
yield token
prev_physical = token[4]
except (SyntaxError, tokenize.TokenError):
self.report_invalid_syntax()
def maybe_check_physical(self, token, prev_physical):
"""If appropriate for token, check current physical line(s)."""
# Called after every token, but act only on end of line.
# a newline token ends a single physical line.
if _is_eol_token(token):
# if the file does not end with a newline, the NEWLINE
# token is inserted by the parser, but it does not contain
# the previous physical line in `token[4]`
if token[4] == '':
self.check_physical(prev_physical)
else:
self.check_physical(token[4])
elif token[0] == tokenize.STRING and '\n' in token[1]:
# Less obviously, a string that contains newlines is a
# multiline string, either triple-quoted or with internal
# newlines backslash-escaped. Check every physical line in
# the string *except* for the last one: its newline is
# outside of the multiline string, so we consider it a
# regular physical line, and will check it like any other
# physical line.
#
# Subtleties:
# - we don't *completely* ignore the last line; if it
# contains the magical "# noqa" comment, we disable all
# physical checks for the entire multiline string
# - have to wind self.line_number back because initially it
# points to the last line of the string, and we want
# check_physical() to give accurate feedback
if noqa(token[4]):
return
self.multiline = True
self.line_number = token[2][0]
_, src, (_, offset), _, _ = token
src = self.lines[self.line_number - 1][:offset] + src
for line in src.split('\n')[:-1]:
self.check_physical(line + '\n')
self.line_number += 1
self.multiline = False
def check_all(self, expected=None, line_offset=0):
"""Run all checks on the input file."""
self.report.init_file(self.filename, self.lines, expected, line_offset)
self.total_lines = len(self.lines)
if self._ast_checks:
self.check_ast()
self.line_number = 0
self.indent_char = None
self.indent_level = self.previous_indent_level = 0
self.previous_logical = ''
self.previous_unindented_logical_line = ''
self.tokens = []
self.blank_lines = self.blank_before = 0
parens = 0
for token in self.generate_tokens():
self.tokens.append(token)
token_type, text = token[0:2]
if self.verbose >= 3:
if token[2][0] == token[3][0]:
pos = '[%s:%s]' % (token[2][1] or '', token[3][1])
else:
pos = 'l.%s' % token[3][0]
print('l.%s\t%s\t%s\t%r' %
(token[2][0], pos, tokenize.tok_name[token[0]], text))
if token_type == tokenize.OP:
if text in '([{':
parens += 1
elif text in '}])':
parens -= 1
elif not parens:
if token_type in NEWLINE:
if token_type == tokenize.NEWLINE:
self.check_logical()
self.blank_before = 0
elif len(self.tokens) == 1:
# The physical line contains only this token.
self.blank_lines += 1
del self.tokens[0]
else:
self.check_logical()
if self.tokens:
self.check_physical(self.lines[-1])
self.check_logical()
return self.report.get_file_results()
class BaseReport(object):
"""Collect the results of the checks."""
print_filename = False
def __init__(self, options):
self._benchmark_keys = options.benchmark_keys
self._ignore_code = options.ignore_code
# Results
self.elapsed = 0
self.total_errors = 0
self.counters = dict.fromkeys(self._benchmark_keys, 0)
self.messages = {}
def start(self):
"""Start the timer."""
self._start_time = time.time()
def stop(self):
"""Stop the timer."""
self.elapsed = time.time() - self._start_time
def init_file(self, filename, lines, expected, line_offset):
"""Signal a new file."""
self.filename = filename
self.lines = lines
self.expected = expected or ()
self.line_offset = line_offset
self.file_errors = 0
self.counters['files'] += 1
self.counters['physical lines'] += len(lines)
def increment_logical_line(self):
"""Signal a new logical line."""
self.counters['logical lines'] += 1
def error(self, line_number, offset, text, check):
"""Report an error, according to options."""
code = text[:4]
if self._ignore_code(code):
return
if code in self.counters:
self.counters[code] += 1
else:
self.counters[code] = 1
self.messages[code] = text[5:]
# Don't care about expected errors or warnings
if code in self.expected:
return
if self.print_filename and not self.file_errors:
print(self.filename)
self.file_errors += 1
self.total_errors += 1
return code
def get_file_results(self):
"""Return the count of errors and warnings for this file."""
return self.file_errors
def get_count(self, prefix=''):
"""Return the total count of errors and warnings."""
return sum(self.counters[key]
for key in self.messages if key.startswith(prefix))
def get_statistics(self, prefix=''):
"""Get statistics for message codes that start with the prefix.
prefix='' matches all errors and warnings
prefix='E' matches all errors
prefix='W' matches all warnings
prefix='E4' matches all errors that have to do with imports
"""
return ['%-7s %s %s' % (self.counters[key], key, self.messages[key])
for key in sorted(self.messages) if key.startswith(prefix)]
def print_statistics(self, prefix=''):
"""Print overall statistics (number of errors and warnings)."""
for line in self.get_statistics(prefix):
print(line)
def print_benchmark(self):
"""Print benchmark numbers."""
print('%-7.2f %s' % (self.elapsed, 'seconds elapsed'))
if self.elapsed:
for key in self._benchmark_keys:
print('%-7d %s per second (%d total)' %
(self.counters[key] / self.elapsed, key,
self.counters[key]))
class FileReport(BaseReport):
"""Collect the results of the checks and print the filenames."""
print_filename = True
class StandardReport(BaseReport):
"""Collect and print the results of the checks."""
def __init__(self, options):
super(StandardReport, self).__init__(options)
self._fmt = REPORT_FORMAT.get(options.format.lower(),
options.format)
self._repeat = options.repeat
self._show_source = options.show_source
self._show_pep8 = options.show_pep8
def init_file(self, filename, lines, expected, line_offset):
"""Signal a new file."""
self._deferred_print = []
return super(StandardReport, self).init_file(
filename, lines, expected, line_offset)
def error(self, line_number, offset, text, check):
"""Report an error, according to options."""
code = super(StandardReport, self).error(line_number, offset,
text, check)
if code and (self.counters[code] == 1 or self._repeat):
self._deferred_print.append(
(line_number, offset, code, text[5:], check.__doc__))
return code
def get_file_results(self):
"""Print results and return the overall count for this file."""
self._deferred_print.sort()
for line_number, offset, code, text, doc in self._deferred_print:
print(self._fmt % {
'path': self.filename,
'row': self.line_offset + line_number, 'col': offset + 1,
'code': code, 'text': text,
})
if self._show_source:
if line_number > len(self.lines):
line = ''
else:
line = self.lines[line_number - 1]
print(line.rstrip())
print(re.sub(r'\S', ' ', line[:offset]) + '^')
if self._show_pep8 and doc:
print(' ' + doc.strip())
# stdout is block buffered when not stdout.isatty().
# line can be broken where buffer boundary since other
# processes write to same file.
# flush() after print() to avoid buffer boundary.
# Typical buffer size is 8192. line written safely when
# len(line) < 8192.
sys.stdout.flush()
return self.file_errors
class DiffReport(StandardReport):
"""Collect and print the results for the changed lines only."""
def __init__(self, options):
super(DiffReport, self).__init__(options)
self._selected = options.selected_lines
def error(self, line_number, offset, text, check):
if line_number not in self._selected[self.filename]:
return
return super(DiffReport, self).error(line_number, offset, text, check)
class StyleGuide(object):
"""Initialize a PEP-8 instance with few options."""
def __init__(self, *args, **kwargs):
# build options from the command line
self.checker_class = kwargs.pop('checker_class', Checker)
parse_argv = kwargs.pop('parse_argv', False)
config_file = kwargs.pop('config_file', False)
parser = kwargs.pop('parser', None)
# build options from dict
options_dict = dict(*args, **kwargs)
arglist = None if parse_argv else options_dict.get('paths', None)
verbose = options_dict.get('verbose', None)
options, self.paths = process_options(
arglist, parse_argv, config_file, parser, verbose)
if options_dict:
options.__dict__.update(options_dict)
if 'paths' in options_dict:
self.paths = options_dict['paths']
self.runner = self.input_file
self.options = options
if not options.reporter:
options.reporter = BaseReport if options.quiet else StandardReport
options.select = tuple(options.select or ())
if not (options.select or options.ignore or
options.testsuite or options.doctest) and DEFAULT_IGNORE:
# The default choice: ignore controversial checks
options.ignore = tuple(DEFAULT_IGNORE.split(','))
else:
# Ignore all checks which are not explicitly selected
options.ignore = ('',) if options.select else tuple(options.ignore)
options.benchmark_keys = BENCHMARK_KEYS[:]
options.ignore_code = self.ignore_code
options.physical_checks = self.get_checks('physical_line')
options.logical_checks = self.get_checks('logical_line')
options.ast_checks = self.get_checks('tree')
self.init_report()
def init_report(self, reporter=None):
"""Initialize the report instance."""
self.options.report = (reporter or self.options.reporter)(self.options)
return self.options.report
def check_files(self, paths=None):
"""Run all checks on the paths."""
if paths is None:
paths = self.paths
report = self.options.report
runner = self.runner
report.start()
try:
for path in paths:
if os.path.isdir(path):
self.input_dir(path)
elif not self.excluded(path):
runner(path)
except KeyboardInterrupt:
print('... stopped')
report.stop()
return report
def input_file(self, filename, lines=None, expected=None, line_offset=0):
"""Run all checks on a Python source file."""
if self.options.verbose:
print('checking %s' % filename)
fchecker = self.checker_class(
filename, lines=lines, options=self.options)
return fchecker.check_all(expected=expected, line_offset=line_offset)
def input_dir(self, dirname):
"""Check all files in this directory and all subdirectories."""
dirname = dirname.rstrip('/')
if self.excluded(dirname):
return 0
counters = self.options.report.counters
verbose = self.options.verbose
filepatterns = self.options.filename
runner = self.runner
for root, dirs, files in os.walk(dirname):
if verbose:
print('directory ' + root)
counters['directories'] += 1
for subdir in sorted(dirs):
if self.excluded(subdir, root):
dirs.remove(subdir)
for filename in sorted(files):
# contain a pattern that matches?
if ((filename_match(filename, filepatterns) and
not self.excluded(filename, root))):
runner(os.path.join(root, filename))
def excluded(self, filename, parent=None):
"""Check if the file should be excluded.
Check if 'options.exclude' contains a pattern matching filename.
"""
if not self.options.exclude:
return False
basename = os.path.basename(filename)
if filename_match(basename, self.options.exclude):
return True
if parent:
filename = os.path.join(parent, filename)
filename = os.path.abspath(filename)
return filename_match(filename, self.options.exclude)
def ignore_code(self, code):
"""Check if the error code should be ignored.
If 'options.select' contains a prefix of the error code,
return False. Else, if 'options.ignore' contains a prefix of
the error code, return True.
"""
if len(code) < 4 and any(s.startswith(code)
for s in self.options.select):
return False
return (code.startswith(self.options.ignore) and
not code.startswith(self.options.select))
def get_checks(self, argument_name):
"""Get all the checks for this category.
Find all globally visible functions where the first argument
name starts with argument_name and which contain selected tests.
"""
checks = []
for check, attrs in _checks[argument_name].items():
(codes, args) = attrs
if any(not (code and self.ignore_code(code)) for code in codes):
checks.append((check.__name__, check, args))
return sorted(checks)
def get_parser(prog='pycodestyle', version=__version__):
"""Create the parser for the program."""
parser = OptionParser(prog=prog, version=version,
usage="%prog [options] input ...")
parser.config_options = [
'exclude', 'filename', 'select', 'ignore', 'max-line-length',
'max-doc-length', 'indent-size', 'hang-closing', 'count', 'format',
'quiet', 'show-pep8', 'show-source', 'statistics', 'verbose']
parser.add_option('-v', '--verbose', default=0, action='count',
help="print status messages, or debug with -vv")
parser.add_option('-q', '--quiet', default=0, action='count',
help="report only file names, or nothing with -qq")
parser.add_option('-r', '--repeat', default=True, action='store_true',
help="(obsolete) show all occurrences of the same error")
parser.add_option('--first', action='store_false', dest='repeat',
help="show first occurrence of each error")
parser.add_option('--exclude', metavar='patterns', default=DEFAULT_EXCLUDE,
help="exclude files or directories which match these "
"comma separated patterns (default: %default)")
parser.add_option('--filename', metavar='patterns', default='*.py',
help="when parsing directories, only check filenames "
"matching these comma separated patterns "
"(default: %default)")
parser.add_option('--select', metavar='errors', default='',
help="select errors and warnings (e.g. E,W6)")
parser.add_option('--ignore', metavar='errors', default='',
help="skip errors and warnings (e.g. E4,W) "
"(default: %s)" % DEFAULT_IGNORE)
parser.add_option('--show-source', action='store_true',
help="show source code for each error")
parser.add_option('--show-pep8', action='store_true',
help="show text of PEP 8 for each error "
"(implies --first)")
parser.add_option('--statistics', action='store_true',
help="count errors and warnings")
parser.add_option('--count', action='store_true',
help="print total number of errors and warnings "
"to standard error and set exit code to 1 if "
"total is not null")
parser.add_option('--max-line-length', type='int', metavar='n',
default=MAX_LINE_LENGTH,
help="set maximum allowed line length "
"(default: %default)")
parser.add_option('--max-doc-length', type='int', metavar='n',
default=None,
help="set maximum allowed doc line length and perform "
"these checks (unchecked if not set)")
parser.add_option('--indent-size', type='int', metavar='n',
default=INDENT_SIZE,
help="set how many spaces make up an indent "
"(default: %default)")
parser.add_option('--hang-closing', action='store_true',
help="hang closing bracket instead of matching "
"indentation of opening bracket's line")
parser.add_option('--format', metavar='format', default='default',
help="set the error format [default|pylint|<custom>]")
parser.add_option('--diff', action='store_true',
help="report changes only within line number ranges in "
"the unified diff received on STDIN")
group = parser.add_option_group("Testing Options")
if os.path.exists(TESTSUITE_PATH):
group.add_option('--testsuite', metavar='dir',
help="run regression tests from dir")
group.add_option('--doctest', action='store_true',
help="run doctest on myself")
group.add_option('--benchmark', action='store_true',
help="measure processing speed")
return parser
def read_config(options, args, arglist, parser):
"""Read and parse configurations.
If a config file is specified on the command line with the
"--config" option, then only it is used for configuration.
Otherwise, the user configuration (~/.config/pycodestyle) and any
local configurations in the current directory or above will be
merged together (in that order) using the read method of
ConfigParser.
"""
config = RawConfigParser()
cli_conf = options.config
local_dir = os.curdir
if USER_CONFIG and os.path.isfile(USER_CONFIG):
if options.verbose:
print('user configuration: %s' % USER_CONFIG)
config.read(USER_CONFIG)
parent = tail = args and os.path.abspath(os.path.commonprefix(args))
while tail:
if config.read(os.path.join(parent, fn) for fn in PROJECT_CONFIG):
local_dir = parent
if options.verbose:
print('local configuration: in %s' % parent)
break
(parent, tail) = os.path.split(parent)
if cli_conf and os.path.isfile(cli_conf):
if options.verbose:
print('cli configuration: %s' % cli_conf)
config.read(cli_conf)
pycodestyle_section = None
if config.has_section(parser.prog):
pycodestyle_section = parser.prog
elif config.has_section('pep8'):
pycodestyle_section = 'pep8' # Deprecated
warnings.warn('[pep8] section is deprecated. Use [pycodestyle].')
if pycodestyle_section:
option_list = {o.dest: o.type or o.action for o in parser.option_list}
# First, read the default values
(new_options, __) = parser.parse_args([])
# Second, parse the configuration
for opt in config.options(pycodestyle_section):
if opt.replace('_', '-') not in parser.config_options:
print(" unknown option '%s' ignored" % opt)
continue
if options.verbose > 1:
print(" %s = %s" % (opt,
config.get(pycodestyle_section, opt)))
normalized_opt = opt.replace('-', '_')
opt_type = option_list[normalized_opt]
if opt_type in ('int', 'count'):
value = config.getint(pycodestyle_section, opt)
elif opt_type in ('store_true', 'store_false'):
value = config.getboolean(pycodestyle_section, opt)
else:
value = config.get(pycodestyle_section, opt)
if normalized_opt == 'exclude':
value = normalize_paths(value, local_dir)
setattr(new_options, normalized_opt, value)
# Third, overwrite with the command-line options
(options, __) = parser.parse_args(arglist, values=new_options)
options.doctest = options.testsuite = False
return options
def process_options(arglist=None, parse_argv=False, config_file=None,
parser=None, verbose=None):
"""Process options passed either via arglist or command line args.
Passing in the ``config_file`` parameter allows other tools, such as
flake8 to specify their own options to be processed in pycodestyle.
"""
if not parser:
parser = get_parser()
if not parser.has_option('--config'):
group = parser.add_option_group("Configuration", description=(
"The project options are read from the [%s] section of the "
"tox.ini file or the setup.cfg file located in any parent folder "
"of the path(s) being processed. Allowed options are: %s." %
(parser.prog, ', '.join(parser.config_options))))
group.add_option('--config', metavar='path', default=config_file,
help="user config file location")
# Don't read the command line if the module is used as a library.
if not arglist and not parse_argv:
arglist = []
# If parse_argv is True and arglist is None, arguments are
# parsed from the command line (sys.argv)
(options, args) = parser.parse_args(arglist)
options.reporter = None
# If explicitly specified verbosity, override any `-v` CLI flag
if verbose is not None:
options.verbose = verbose
if options.ensure_value('testsuite', False):
args.append(options.testsuite)
elif not options.ensure_value('doctest', False):
if parse_argv and not args:
if options.diff or any(os.path.exists(name)
for name in PROJECT_CONFIG):
args = ['.']
else:
parser.error('input not specified')
options = read_config(options, args, arglist, parser)
options.reporter = parse_argv and options.quiet == 1 and FileReport
options.filename = _parse_multi_options(options.filename)
options.exclude = normalize_paths(options.exclude)
options.select = _parse_multi_options(options.select)
options.ignore = _parse_multi_options(options.ignore)
if options.diff:
options.reporter = DiffReport
stdin = stdin_get_value()
options.selected_lines = parse_udiff(stdin, options.filename, args[0])
args = sorted(options.selected_lines)
return options, args
def _parse_multi_options(options, split_token=','):
r"""Split and strip and discard empties.
Turns the following:
A,
B,
into ["A", "B"]
"""
if options:
return [o.strip() for o in options.split(split_token) if o.strip()]
else:
return options
def _main():
"""Parse options and run checks on Python source."""
import signal
# Handle "Broken pipe" gracefully
try:
signal.signal(signal.SIGPIPE, lambda signum, frame: sys.exit(1))
except AttributeError:
pass # not supported on Windows
style_guide = StyleGuide(parse_argv=True)
options = style_guide.options
if options.doctest or options.testsuite:
from testsuite.support import run_tests
report = run_tests(style_guide)
else:
report = style_guide.check_files()
if options.statistics:
report.print_statistics()
if options.benchmark:
report.print_benchmark()
if options.testsuite and not options.quiet:
report.print_results()
if report.total_errors:
if options.count:
sys.stderr.write(str(report.total_errors) + '\n')
sys.exit(1)
if __name__ == '__main__':
_main()
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/six.py
|
# Copyright (c) 2010-2020 Benjamin Peterson
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
"""Utilities for writing code that runs on Python 2 and 3"""
from __future__ import absolute_import
import functools
import itertools
import operator
import sys
import types
__author__ = "Benjamin Peterson <benjamin@python.org>"
__version__ = "1.15.0"
# Useful for very coarse version differentiation.
PY2 = sys.version_info[0] == 2
PY3 = sys.version_info[0] == 3
PY34 = sys.version_info[0:2] >= (3, 4)
if PY3:
string_types = str,
integer_types = int,
class_types = type,
text_type = str
binary_type = bytes
MAXSIZE = sys.maxsize
else:
string_types = basestring,
integer_types = (int, long)
class_types = (type, types.ClassType)
text_type = unicode
binary_type = str
if sys.platform.startswith("java"):
# Jython always uses 32 bits.
MAXSIZE = int((1 << 31) - 1)
else:
# It's possible to have sizeof(long) != sizeof(Py_ssize_t).
class X(object):
def __len__(self):
return 1 << 31
try:
len(X())
except OverflowError:
# 32-bit
MAXSIZE = int((1 << 31) - 1)
else:
# 64-bit
MAXSIZE = int((1 << 63) - 1)
del X
def _add_doc(func, doc):
"""Add documentation to a function."""
func.__doc__ = doc
def _import_module(name):
"""Import module, returning the module after the last dot."""
__import__(name)
return sys.modules[name]
class _LazyDescr(object):
def __init__(self, name):
self.name = name
def __get__(self, obj, tp):
result = self._resolve()
setattr(obj, self.name, result) # Invokes __set__.
try:
# This is a bit ugly, but it avoids running this again by
# removing this descriptor.
delattr(obj.__class__, self.name)
except AttributeError:
pass
return result
class MovedModule(_LazyDescr):
def __init__(self, name, old, new=None):
super(MovedModule, self).__init__(name)
if PY3:
if new is None:
new = name
self.mod = new
else:
self.mod = old
def _resolve(self):
return _import_module(self.mod)
def __getattr__(self, attr):
_module = self._resolve()
value = getattr(_module, attr)
setattr(self, attr, value)
return value
class _LazyModule(types.ModuleType):
def __init__(self, name):
super(_LazyModule, self).__init__(name)
self.__doc__ = self.__class__.__doc__
def __dir__(self):
attrs = ["__doc__", "__name__"]
attrs += [attr.name for attr in self._moved_attributes]
return attrs
# Subclasses should override this
_moved_attributes = []
class MovedAttribute(_LazyDescr):
def __init__(self, name, old_mod, new_mod, old_attr=None, new_attr=None):
super(MovedAttribute, self).__init__(name)
if PY3:
if new_mod is None:
new_mod = name
self.mod = new_mod
if new_attr is None:
if old_attr is None:
new_attr = name
else:
new_attr = old_attr
self.attr = new_attr
else:
self.mod = old_mod
if old_attr is None:
old_attr = name
self.attr = old_attr
def _resolve(self):
module = _import_module(self.mod)
return getattr(module, self.attr)
class _SixMetaPathImporter(object):
"""
A meta path importer to import six.moves and its submodules.
This class implements a PEP302 finder and loader. It should be compatible
with Python 2.5 and all existing versions of Python3
"""
def __init__(self, six_module_name):
self.name = six_module_name
self.known_modules = {}
def _add_module(self, mod, *fullnames):
for fullname in fullnames:
self.known_modules[self.name + "." + fullname] = mod
def _get_module(self, fullname):
return self.known_modules[self.name + "." + fullname]
def find_module(self, fullname, path=None):
if fullname in self.known_modules:
return self
return None
def __get_module(self, fullname):
try:
return self.known_modules[fullname]
except KeyError:
raise ImportError("This loader does not know module " + fullname)
def load_module(self, fullname):
try:
# in case of a reload
return sys.modules[fullname]
except KeyError:
pass
mod = self.__get_module(fullname)
if isinstance(mod, MovedModule):
mod = mod._resolve()
else:
mod.__loader__ = self
sys.modules[fullname] = mod
return mod
def is_package(self, fullname):
"""
Return true, if the named module is a package.
We need this method to get correct spec objects with
Python 3.4 (see PEP451)
"""
return hasattr(self.__get_module(fullname), "__path__")
def get_code(self, fullname):
"""Return None
Required, if is_package is implemented"""
self.__get_module(fullname) # eventually raises ImportError
return None
get_source = get_code # same as get_code
_importer = _SixMetaPathImporter(__name__)
class _MovedItems(_LazyModule):
"""Lazy loading of moved objects"""
__path__ = [] # mark as package
_moved_attributes = [
MovedAttribute("cStringIO", "cStringIO", "io", "StringIO"),
MovedAttribute("filter", "itertools", "builtins", "ifilter", "filter"),
MovedAttribute("filterfalse", "itertools", "itertools", "ifilterfalse", "filterfalse"),
MovedAttribute("input", "__builtin__", "builtins", "raw_input", "input"),
MovedAttribute("intern", "__builtin__", "sys"),
MovedAttribute("map", "itertools", "builtins", "imap", "map"),
MovedAttribute("getcwd", "os", "os", "getcwdu", "getcwd"),
MovedAttribute("getcwdb", "os", "os", "getcwd", "getcwdb"),
MovedAttribute("getoutput", "commands", "subprocess"),
MovedAttribute("range", "__builtin__", "builtins", "xrange", "range"),
MovedAttribute("reload_module", "__builtin__", "importlib" if PY34 else "imp", "reload"),
MovedAttribute("reduce", "__builtin__", "functools"),
MovedAttribute("shlex_quote", "pipes", "shlex", "quote"),
MovedAttribute("StringIO", "StringIO", "io"),
MovedAttribute("UserDict", "UserDict", "collections"),
MovedAttribute("UserList", "UserList", "collections"),
MovedAttribute("UserString", "UserString", "collections"),
MovedAttribute("xrange", "__builtin__", "builtins", "xrange", "range"),
MovedAttribute("zip", "itertools", "builtins", "izip", "zip"),
MovedAttribute("zip_longest", "itertools", "itertools", "izip_longest", "zip_longest"),
MovedModule("builtins", "__builtin__"),
MovedModule("configparser", "ConfigParser"),
MovedModule("collections_abc", "collections", "collections.abc" if sys.version_info >= (3, 3) else "collections"),
MovedModule("copyreg", "copy_reg"),
MovedModule("dbm_gnu", "gdbm", "dbm.gnu"),
MovedModule("dbm_ndbm", "dbm", "dbm.ndbm"),
MovedModule("_dummy_thread", "dummy_thread", "_dummy_thread" if sys.version_info < (3, 9) else "_thread"),
MovedModule("http_cookiejar", "cookielib", "http.cookiejar"),
MovedModule("http_cookies", "Cookie", "http.cookies"),
MovedModule("html_entities", "htmlentitydefs", "html.entities"),
MovedModule("html_parser", "HTMLParser", "html.parser"),
MovedModule("http_client", "httplib", "http.client"),
MovedModule("email_mime_base", "email.MIMEBase", "email.mime.base"),
MovedModule("email_mime_image", "email.MIMEImage", "email.mime.image"),
MovedModule("email_mime_multipart", "email.MIMEMultipart", "email.mime.multipart"),
MovedModule("email_mime_nonmultipart", "email.MIMENonMultipart", "email.mime.nonmultipart"),
MovedModule("email_mime_text", "email.MIMEText", "email.mime.text"),
MovedModule("BaseHTTPServer", "BaseHTTPServer", "http.server"),
MovedModule("CGIHTTPServer", "CGIHTTPServer", "http.server"),
MovedModule("SimpleHTTPServer", "SimpleHTTPServer", "http.server"),
MovedModule("cPickle", "cPickle", "pickle"),
MovedModule("queue", "Queue"),
MovedModule("reprlib", "repr"),
MovedModule("socketserver", "SocketServer"),
MovedModule("_thread", "thread", "_thread"),
MovedModule("tkinter", "Tkinter"),
MovedModule("tkinter_dialog", "Dialog", "tkinter.dialog"),
MovedModule("tkinter_filedialog", "FileDialog", "tkinter.filedialog"),
MovedModule("tkinter_scrolledtext", "ScrolledText", "tkinter.scrolledtext"),
MovedModule("tkinter_simpledialog", "SimpleDialog", "tkinter.simpledialog"),
MovedModule("tkinter_tix", "Tix", "tkinter.tix"),
MovedModule("tkinter_ttk", "ttk", "tkinter.ttk"),
MovedModule("tkinter_constants", "Tkconstants", "tkinter.constants"),
MovedModule("tkinter_dnd", "Tkdnd", "tkinter.dnd"),
MovedModule("tkinter_colorchooser", "tkColorChooser",
"tkinter.colorchooser"),
MovedModule("tkinter_commondialog", "tkCommonDialog",
"tkinter.commondialog"),
MovedModule("tkinter_tkfiledialog", "tkFileDialog", "tkinter.filedialog"),
MovedModule("tkinter_font", "tkFont", "tkinter.font"),
MovedModule("tkinter_messagebox", "tkMessageBox", "tkinter.messagebox"),
MovedModule("tkinter_tksimpledialog", "tkSimpleDialog",
"tkinter.simpledialog"),
MovedModule("urllib_parse", __name__ + ".moves.urllib_parse", "urllib.parse"),
MovedModule("urllib_error", __name__ + ".moves.urllib_error", "urllib.error"),
MovedModule("urllib", __name__ + ".moves.urllib", __name__ + ".moves.urllib"),
MovedModule("urllib_robotparser", "robotparser", "urllib.robotparser"),
MovedModule("xmlrpc_client", "xmlrpclib", "xmlrpc.client"),
MovedModule("xmlrpc_server", "SimpleXMLRPCServer", "xmlrpc.server"),
]
# Add windows specific modules.
if sys.platform == "win32":
_moved_attributes += [
MovedModule("winreg", "_winreg"),
]
for attr in _moved_attributes:
setattr(_MovedItems, attr.name, attr)
if isinstance(attr, MovedModule):
_importer._add_module(attr, "moves." + attr.name)
del attr
_MovedItems._moved_attributes = _moved_attributes
moves = _MovedItems(__name__ + ".moves")
_importer._add_module(moves, "moves")
class Module_six_moves_urllib_parse(_LazyModule):
"""Lazy loading of moved objects in six.moves.urllib_parse"""
_urllib_parse_moved_attributes = [
MovedAttribute("ParseResult", "urlparse", "urllib.parse"),
MovedAttribute("SplitResult", "urlparse", "urllib.parse"),
MovedAttribute("parse_qs", "urlparse", "urllib.parse"),
MovedAttribute("parse_qsl", "urlparse", "urllib.parse"),
MovedAttribute("urldefrag", "urlparse", "urllib.parse"),
MovedAttribute("urljoin", "urlparse", "urllib.parse"),
MovedAttribute("urlparse", "urlparse", "urllib.parse"),
MovedAttribute("urlsplit", "urlparse", "urllib.parse"),
MovedAttribute("urlunparse", "urlparse", "urllib.parse"),
MovedAttribute("urlunsplit", "urlparse", "urllib.parse"),
MovedAttribute("quote", "urllib", "urllib.parse"),
MovedAttribute("quote_plus", "urllib", "urllib.parse"),
MovedAttribute("unquote", "urllib", "urllib.parse"),
MovedAttribute("unquote_plus", "urllib", "urllib.parse"),
MovedAttribute("unquote_to_bytes", "urllib", "urllib.parse", "unquote", "unquote_to_bytes"),
MovedAttribute("urlencode", "urllib", "urllib.parse"),
MovedAttribute("splitquery", "urllib", "urllib.parse"),
MovedAttribute("splittag", "urllib", "urllib.parse"),
MovedAttribute("splituser", "urllib", "urllib.parse"),
MovedAttribute("splitvalue", "urllib", "urllib.parse"),
MovedAttribute("uses_fragment", "urlparse", "urllib.parse"),
MovedAttribute("uses_netloc", "urlparse", "urllib.parse"),
MovedAttribute("uses_params", "urlparse", "urllib.parse"),
MovedAttribute("uses_query", "urlparse", "urllib.parse"),
MovedAttribute("uses_relative", "urlparse", "urllib.parse"),
]
for attr in _urllib_parse_moved_attributes:
setattr(Module_six_moves_urllib_parse, attr.name, attr)
del attr
Module_six_moves_urllib_parse._moved_attributes = _urllib_parse_moved_attributes
_importer._add_module(Module_six_moves_urllib_parse(__name__ + ".moves.urllib_parse"),
"moves.urllib_parse", "moves.urllib.parse")
class Module_six_moves_urllib_error(_LazyModule):
"""Lazy loading of moved objects in six.moves.urllib_error"""
_urllib_error_moved_attributes = [
MovedAttribute("URLError", "urllib2", "urllib.error"),
MovedAttribute("HTTPError", "urllib2", "urllib.error"),
MovedAttribute("ContentTooShortError", "urllib", "urllib.error"),
]
for attr in _urllib_error_moved_attributes:
setattr(Module_six_moves_urllib_error, attr.name, attr)
del attr
Module_six_moves_urllib_error._moved_attributes = _urllib_error_moved_attributes
_importer._add_module(Module_six_moves_urllib_error(__name__ + ".moves.urllib.error"),
"moves.urllib_error", "moves.urllib.error")
class Module_six_moves_urllib_request(_LazyModule):
"""Lazy loading of moved objects in six.moves.urllib_request"""
_urllib_request_moved_attributes = [
MovedAttribute("urlopen", "urllib2", "urllib.request"),
MovedAttribute("install_opener", "urllib2", "urllib.request"),
MovedAttribute("build_opener", "urllib2", "urllib.request"),
MovedAttribute("pathname2url", "urllib", "urllib.request"),
MovedAttribute("url2pathname", "urllib", "urllib.request"),
MovedAttribute("getproxies", "urllib", "urllib.request"),
MovedAttribute("Request", "urllib2", "urllib.request"),
MovedAttribute("OpenerDirector", "urllib2", "urllib.request"),
MovedAttribute("HTTPDefaultErrorHandler", "urllib2", "urllib.request"),
MovedAttribute("HTTPRedirectHandler", "urllib2", "urllib.request"),
MovedAttribute("HTTPCookieProcessor", "urllib2", "urllib.request"),
MovedAttribute("ProxyHandler", "urllib2", "urllib.request"),
MovedAttribute("BaseHandler", "urllib2", "urllib.request"),
MovedAttribute("HTTPPasswordMgr", "urllib2", "urllib.request"),
MovedAttribute("HTTPPasswordMgrWithDefaultRealm", "urllib2", "urllib.request"),
MovedAttribute("AbstractBasicAuthHandler", "urllib2", "urllib.request"),
MovedAttribute("HTTPBasicAuthHandler", "urllib2", "urllib.request"),
MovedAttribute("ProxyBasicAuthHandler", "urllib2", "urllib.request"),
MovedAttribute("AbstractDigestAuthHandler", "urllib2", "urllib.request"),
MovedAttribute("HTTPDigestAuthHandler", "urllib2", "urllib.request"),
MovedAttribute("ProxyDigestAuthHandler", "urllib2", "urllib.request"),
MovedAttribute("HTTPHandler", "urllib2", "urllib.request"),
MovedAttribute("HTTPSHandler", "urllib2", "urllib.request"),
MovedAttribute("FileHandler", "urllib2", "urllib.request"),
MovedAttribute("FTPHandler", "urllib2", "urllib.request"),
MovedAttribute("CacheFTPHandler", "urllib2", "urllib.request"),
MovedAttribute("UnknownHandler", "urllib2", "urllib.request"),
MovedAttribute("HTTPErrorProcessor", "urllib2", "urllib.request"),
MovedAttribute("urlretrieve", "urllib", "urllib.request"),
MovedAttribute("urlcleanup", "urllib", "urllib.request"),
MovedAttribute("URLopener", "urllib", "urllib.request"),
MovedAttribute("FancyURLopener", "urllib", "urllib.request"),
MovedAttribute("proxy_bypass", "urllib", "urllib.request"),
MovedAttribute("parse_http_list", "urllib2", "urllib.request"),
MovedAttribute("parse_keqv_list", "urllib2", "urllib.request"),
]
for attr in _urllib_request_moved_attributes:
setattr(Module_six_moves_urllib_request, attr.name, attr)
del attr
Module_six_moves_urllib_request._moved_attributes = _urllib_request_moved_attributes
_importer._add_module(Module_six_moves_urllib_request(__name__ + ".moves.urllib.request"),
"moves.urllib_request", "moves.urllib.request")
class Module_six_moves_urllib_response(_LazyModule):
"""Lazy loading of moved objects in six.moves.urllib_response"""
_urllib_response_moved_attributes = [
MovedAttribute("addbase", "urllib", "urllib.response"),
MovedAttribute("addclosehook", "urllib", "urllib.response"),
MovedAttribute("addinfo", "urllib", "urllib.response"),
MovedAttribute("addinfourl", "urllib", "urllib.response"),
]
for attr in _urllib_response_moved_attributes:
setattr(Module_six_moves_urllib_response, attr.name, attr)
del attr
Module_six_moves_urllib_response._moved_attributes = _urllib_response_moved_attributes
_importer._add_module(Module_six_moves_urllib_response(__name__ + ".moves.urllib.response"),
"moves.urllib_response", "moves.urllib.response")
class Module_six_moves_urllib_robotparser(_LazyModule):
"""Lazy loading of moved objects in six.moves.urllib_robotparser"""
_urllib_robotparser_moved_attributes = [
MovedAttribute("RobotFileParser", "robotparser", "urllib.robotparser"),
]
for attr in _urllib_robotparser_moved_attributes:
setattr(Module_six_moves_urllib_robotparser, attr.name, attr)
del attr
Module_six_moves_urllib_robotparser._moved_attributes = _urllib_robotparser_moved_attributes
_importer._add_module(Module_six_moves_urllib_robotparser(__name__ + ".moves.urllib.robotparser"),
"moves.urllib_robotparser", "moves.urllib.robotparser")
class Module_six_moves_urllib(types.ModuleType):
"""Create a six.moves.urllib namespace that resembles the Python 3 namespace"""
__path__ = [] # mark as package
parse = _importer._get_module("moves.urllib_parse")
error = _importer._get_module("moves.urllib_error")
request = _importer._get_module("moves.urllib_request")
response = _importer._get_module("moves.urllib_response")
robotparser = _importer._get_module("moves.urllib_robotparser")
def __dir__(self):
return ['parse', 'error', 'request', 'response', 'robotparser']
_importer._add_module(Module_six_moves_urllib(__name__ + ".moves.urllib"),
"moves.urllib")
def add_move(move):
"""Add an item to six.moves."""
setattr(_MovedItems, move.name, move)
def remove_move(name):
"""Remove item from six.moves."""
try:
delattr(_MovedItems, name)
except AttributeError:
try:
del moves.__dict__[name]
except KeyError:
raise AttributeError("no such move, %r" % (name,))
if PY3:
_meth_func = "__func__"
_meth_self = "__self__"
_func_closure = "__closure__"
_func_code = "__code__"
_func_defaults = "__defaults__"
_func_globals = "__globals__"
else:
_meth_func = "im_func"
_meth_self = "im_self"
_func_closure = "func_closure"
_func_code = "func_code"
_func_defaults = "func_defaults"
_func_globals = "func_globals"
try:
advance_iterator = next
except NameError:
def advance_iterator(it):
return it.next()
next = advance_iterator
try:
callable = callable
except NameError:
def callable(obj):
return any("__call__" in klass.__dict__ for klass in type(obj).__mro__)
if PY3:
def get_unbound_function(unbound):
return unbound
create_bound_method = types.MethodType
def create_unbound_method(func, cls):
return func
Iterator = object
else:
def get_unbound_function(unbound):
return unbound.im_func
def create_bound_method(func, obj):
return types.MethodType(func, obj, obj.__class__)
def create_unbound_method(func, cls):
return types.MethodType(func, None, cls)
class Iterator(object):
def next(self):
return type(self).__next__(self)
callable = callable
_add_doc(get_unbound_function,
"""Get the function out of a possibly unbound function""")
get_method_function = operator.attrgetter(_meth_func)
get_method_self = operator.attrgetter(_meth_self)
get_function_closure = operator.attrgetter(_func_closure)
get_function_code = operator.attrgetter(_func_code)
get_function_defaults = operator.attrgetter(_func_defaults)
get_function_globals = operator.attrgetter(_func_globals)
if PY3:
def iterkeys(d, **kw):
return iter(d.keys(**kw))
def itervalues(d, **kw):
return iter(d.values(**kw))
def iteritems(d, **kw):
return iter(d.items(**kw))
def iterlists(d, **kw):
return iter(d.lists(**kw))
viewkeys = operator.methodcaller("keys")
viewvalues = operator.methodcaller("values")
viewitems = operator.methodcaller("items")
else:
def iterkeys(d, **kw):
return d.iterkeys(**kw)
def itervalues(d, **kw):
return d.itervalues(**kw)
def iteritems(d, **kw):
return d.iteritems(**kw)
def iterlists(d, **kw):
return d.iterlists(**kw)
viewkeys = operator.methodcaller("viewkeys")
viewvalues = operator.methodcaller("viewvalues")
viewitems = operator.methodcaller("viewitems")
_add_doc(iterkeys, "Return an iterator over the keys of a dictionary.")
_add_doc(itervalues, "Return an iterator over the values of a dictionary.")
_add_doc(iteritems,
"Return an iterator over the (key, value) pairs of a dictionary.")
_add_doc(iterlists,
"Return an iterator over the (key, [values]) pairs of a dictionary.")
if PY3:
def b(s):
return s.encode("latin-1")
def u(s):
return s
unichr = chr
import struct
int2byte = struct.Struct(">B").pack
del struct
byte2int = operator.itemgetter(0)
indexbytes = operator.getitem
iterbytes = iter
import io
StringIO = io.StringIO
BytesIO = io.BytesIO
del io
_assertCountEqual = "assertCountEqual"
if sys.version_info[1] <= 1:
_assertRaisesRegex = "assertRaisesRegexp"
_assertRegex = "assertRegexpMatches"
_assertNotRegex = "assertNotRegexpMatches"
else:
_assertRaisesRegex = "assertRaisesRegex"
_assertRegex = "assertRegex"
_assertNotRegex = "assertNotRegex"
else:
def b(s):
return s
# Workaround for standalone backslash
def u(s):
return unicode(s.replace(r'\\', r'\\\\'), "unicode_escape")
unichr = unichr
int2byte = chr
def byte2int(bs):
return ord(bs[0])
def indexbytes(buf, i):
return ord(buf[i])
iterbytes = functools.partial(itertools.imap, ord)
import StringIO
StringIO = BytesIO = StringIO.StringIO
_assertCountEqual = "assertItemsEqual"
_assertRaisesRegex = "assertRaisesRegexp"
_assertRegex = "assertRegexpMatches"
_assertNotRegex = "assertNotRegexpMatches"
_add_doc(b, """Byte literal""")
_add_doc(u, """Text literal""")
def assertCountEqual(self, *args, **kwargs):
return getattr(self, _assertCountEqual)(*args, **kwargs)
def assertRaisesRegex(self, *args, **kwargs):
return getattr(self, _assertRaisesRegex)(*args, **kwargs)
def assertRegex(self, *args, **kwargs):
return getattr(self, _assertRegex)(*args, **kwargs)
def assertNotRegex(self, *args, **kwargs):
return getattr(self, _assertNotRegex)(*args, **kwargs)
if PY3:
exec_ = getattr(moves.builtins, "exec")
def reraise(tp, value, tb=None):
try:
if value is None:
value = tp()
if value.__traceback__ is not tb:
raise value.with_traceback(tb)
raise value
finally:
value = None
tb = None
else:
def exec_(_code_, _globs_=None, _locs_=None):
"""Execute code in a namespace."""
if _globs_ is None:
frame = sys._getframe(1)
_globs_ = frame.f_globals
if _locs_ is None:
_locs_ = frame.f_locals
del frame
elif _locs_ is None:
_locs_ = _globs_
exec("""exec _code_ in _globs_, _locs_""")
exec_("""def reraise(tp, value, tb=None):
try:
raise tp, value, tb
finally:
tb = None
""")
if sys.version_info[:2] > (3,):
exec_("""def raise_from(value, from_value):
try:
raise value from from_value
finally:
value = None
""")
else:
def raise_from(value, from_value):
raise value
print_ = getattr(moves.builtins, "print", None)
if print_ is None:
def print_(*args, **kwargs):
"""The new-style print function for Python 2.4 and 2.5."""
fp = kwargs.pop("file", sys.stdout)
if fp is None:
return
def write(data):
if not isinstance(data, basestring):
data = str(data)
# If the file has an encoding, encode unicode with it.
if (isinstance(fp, file) and
isinstance(data, unicode) and
fp.encoding is not None):
errors = getattr(fp, "errors", None)
if errors is None:
errors = "strict"
data = data.encode(fp.encoding, errors)
fp.write(data)
want_unicode = False
sep = kwargs.pop("sep", None)
if sep is not None:
if isinstance(sep, unicode):
want_unicode = True
elif not isinstance(sep, str):
raise TypeError("sep must be None or a string")
end = kwargs.pop("end", None)
if end is not None:
if isinstance(end, unicode):
want_unicode = True
elif not isinstance(end, str):
raise TypeError("end must be None or a string")
if kwargs:
raise TypeError("invalid keyword arguments to print()")
if not want_unicode:
for arg in args:
if isinstance(arg, unicode):
want_unicode = True
break
if want_unicode:
newline = unicode("\n")
space = unicode(" ")
else:
newline = "\n"
space = " "
if sep is None:
sep = space
if end is None:
end = newline
for i, arg in enumerate(args):
if i:
write(sep)
write(arg)
write(end)
if sys.version_info[:2] < (3, 3):
_print = print_
def print_(*args, **kwargs):
fp = kwargs.get("file", sys.stdout)
flush = kwargs.pop("flush", False)
_print(*args, **kwargs)
if flush and fp is not None:
fp.flush()
_add_doc(reraise, """Reraise an exception.""")
if sys.version_info[0:2] < (3, 4):
# This does exactly the same what the :func:`py3:functools.update_wrapper`
# function does on Python versions after 3.2. It sets the ``__wrapped__``
# attribute on ``wrapper`` object and it doesn't raise an error if any of
# the attributes mentioned in ``assigned`` and ``updated`` are missing on
# ``wrapped`` object.
def _update_wrapper(wrapper, wrapped,
assigned=functools.WRAPPER_ASSIGNMENTS,
updated=functools.WRAPPER_UPDATES):
for attr in assigned:
try:
value = getattr(wrapped, attr)
except AttributeError:
continue
else:
setattr(wrapper, attr, value)
for attr in updated:
getattr(wrapper, attr).update(getattr(wrapped, attr, {}))
wrapper.__wrapped__ = wrapped
return wrapper
_update_wrapper.__doc__ = functools.update_wrapper.__doc__
def wraps(wrapped, assigned=functools.WRAPPER_ASSIGNMENTS,
updated=functools.WRAPPER_UPDATES):
return functools.partial(_update_wrapper, wrapped=wrapped,
assigned=assigned, updated=updated)
wraps.__doc__ = functools.wraps.__doc__
else:
wraps = functools.wraps
def with_metaclass(meta, *bases):
"""Create a base class with a metaclass."""
# This requires a bit of explanation: the basic idea is to make a dummy
# metaclass for one level of class instantiation that replaces itself with
# the actual metaclass.
class metaclass(type):
def __new__(cls, name, this_bases, d):
if sys.version_info[:2] >= (3, 7):
# This version introduced PEP 560 that requires a bit
# of extra care (we mimic what is done by __build_class__).
resolved_bases = types.resolve_bases(bases)
if resolved_bases is not bases:
d['__orig_bases__'] = bases
else:
resolved_bases = bases
return meta(name, resolved_bases, d)
@classmethod
def __prepare__(cls, name, this_bases):
return meta.__prepare__(name, bases)
return type.__new__(metaclass, 'temporary_class', (), {})
def add_metaclass(metaclass):
"""Class decorator for creating a class with a metaclass."""
def wrapper(cls):
orig_vars = cls.__dict__.copy()
slots = orig_vars.get('__slots__')
if slots is not None:
if isinstance(slots, str):
slots = [slots]
for slots_var in slots:
orig_vars.pop(slots_var)
orig_vars.pop('__dict__', None)
orig_vars.pop('__weakref__', None)
if hasattr(cls, '__qualname__'):
orig_vars['__qualname__'] = cls.__qualname__
return metaclass(cls.__name__, cls.__bases__, orig_vars)
return wrapper
def ensure_binary(s, encoding='utf-8', errors='strict'):
"""Coerce **s** to six.binary_type.
For Python 2:
- `unicode` -> encoded to `str`
- `str` -> `str`
For Python 3:
- `str` -> encoded to `bytes`
- `bytes` -> `bytes`
"""
if isinstance(s, binary_type):
return s
if isinstance(s, text_type):
return s.encode(encoding, errors)
raise TypeError("not expecting type '%s'" % type(s))
def ensure_str(s, encoding='utf-8', errors='strict'):
"""Coerce *s* to `str`.
For Python 2:
- `unicode` -> encoded to `str`
- `str` -> `str`
For Python 3:
- `str` -> `str`
- `bytes` -> decoded to `str`
"""
# Optimization: Fast return for the common case.
if type(s) is str:
return s
if PY2 and isinstance(s, text_type):
return s.encode(encoding, errors)
elif PY3 and isinstance(s, binary_type):
return s.decode(encoding, errors)
elif not isinstance(s, (text_type, binary_type)):
raise TypeError("not expecting type '%s'" % type(s))
return s
def ensure_text(s, encoding='utf-8', errors='strict'):
"""Coerce *s* to six.text_type.
For Python 2:
- `unicode` -> `unicode`
- `str` -> `unicode`
For Python 3:
- `str` -> `str`
- `bytes` -> decoded to `str`
"""
if isinstance(s, binary_type):
return s.decode(encoding, errors)
elif isinstance(s, text_type):
return s
else:
raise TypeError("not expecting type '%s'" % type(s))
def python_2_unicode_compatible(klass):
"""
A class decorator that defines __unicode__ and __str__ methods under Python 2.
Under Python 3 it does nothing.
To support Python 2 and 3 with a single code base, define a __str__ method
returning text and apply this decorator to the class.
"""
if PY2:
if '__str__' not in klass.__dict__:
raise ValueError("@python_2_unicode_compatible cannot be applied "
"to %s because it doesn't define __str__()." %
klass.__name__)
klass.__unicode__ = klass.__str__
klass.__str__ = lambda self: self.__unicode__().encode('utf-8')
return klass
# Complete the moves implementation.
# This code is at the end of this module to speed up module loading.
# Turn this module into a package.
__path__ = [] # required for PEP 302 and PEP 451
__package__ = __name__ # see PEP 366 @ReservedAssignment
if globals().get("__spec__") is not None:
__spec__.submodule_search_locations = [] # PEP 451 @UndefinedVariable
# Remove other six meta path importers, since they cause problems. This can
# happen if six is removed from sys.modules and then reloaded. (Setuptools does
# this for some reason.)
if sys.meta_path:
for i, importer in enumerate(sys.meta_path):
# Here's some real nastiness: Another "instance" of the six module might
# be floating around. Therefore, we can't use isinstance() to check for
# the six meta path importer, since the other six instance will have
# inserted an importer with different class.
if (type(importer).__name__ == "_SixMetaPathImporter" and
importer.name == __name__):
del sys.meta_path[i]
break
del i, importer
# Finally, add the importer to the meta path import hook.
sys.meta_path.append(_importer)
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/autopep8.py
|
#!/usr/bin/env python
# Copyright (C) 2010-2011 Hideo Hattori
# Copyright (C) 2011-2013 Hideo Hattori, Steven Myint
# Copyright (C) 2013-2016 Hideo Hattori, Steven Myint, Bill Wendling
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# Copyright (C) 2006-2009 Johann C. Rocholl <johann@rocholl.net>
# Copyright (C) 2009-2013 Florent Xicluna <florent.xicluna@gmail.com>
#
# Permission is hereby granted, free of charge, to any person
# obtaining a copy of this software and associated documentation files
# (the "Software"), to deal in the Software without restriction,
# including without limitation the rights to use, copy, modify, merge,
# publish, distribute, sublicense, and/or sell copies of the Software,
# and to permit persons to whom the Software is furnished to do so,
# subject to the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
"""Automatically formats Python code to conform to the PEP 8 style guide.
Fixes that only need be done once can be added by adding a function of the form
"fix_<code>(source)" to this module. They should return the fixed source code.
These fixes are picked up by apply_global_fixes().
Fixes that depend on pycodestyle should be added as methods to FixPEP8. See the
class documentation for more information.
"""
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
from __future__ import unicode_literals
import argparse
import codecs
import collections
import copy
import difflib
import fnmatch
import inspect
import io
import itertools
import keyword
import locale
import os
import re
import signal
import sys
import textwrap
import token
import tokenize
import warnings
import ast
try:
from configparser import ConfigParser as SafeConfigParser
from configparser import Error
except ImportError:
from ConfigParser import SafeConfigParser
from ConfigParser import Error
import pycodestyle
from pycodestyle import STARTSWITH_INDENT_STATEMENT_REGEX
try:
unicode
except NameError:
unicode = str
__version__ = '1.5.6'
CR = '\r'
LF = '\n'
CRLF = '\r\n'
PYTHON_SHEBANG_REGEX = re.compile(r'^#!.*\bpython[23]?\b\s*$')
LAMBDA_REGEX = re.compile(r'([\w.]+)\s=\slambda\s*([\(\)=\w,\s.]*):')
COMPARE_NEGATIVE_REGEX = re.compile(r'\b(not)\s+([^][)(}{]+?)\s+(in|is)\s')
COMPARE_NEGATIVE_REGEX_THROUGH = re.compile(r'\b(not\s+in|is\s+not)\s')
BARE_EXCEPT_REGEX = re.compile(r'except\s*:')
STARTSWITH_DEF_REGEX = re.compile(r'^(async\s+def|def)\s.*\):')
DOCSTRING_START_REGEX = re.compile(r'^u?r?(?P<kind>["\']{3})')
ENABLE_REGEX = re.compile(r'# *(fmt|autopep8): *on')
DISABLE_REGEX = re.compile(r'# *(fmt|autopep8): *off')
EXIT_CODE_OK = 0
EXIT_CODE_ERROR = 1
EXIT_CODE_EXISTS_DIFF = 2
# For generating line shortening candidates.
SHORTEN_OPERATOR_GROUPS = frozenset([
frozenset([',']),
frozenset(['%']),
frozenset([',', '(', '[', '{']),
frozenset(['%', '(', '[', '{']),
frozenset([',', '(', '[', '{', '%', '+', '-', '*', '/', '//']),
frozenset(['%', '+', '-', '*', '/', '//']),
])
DEFAULT_IGNORE = 'E226,E24,W50,W690' # TODO: use pycodestyle.DEFAULT_IGNORE
DEFAULT_INDENT_SIZE = 4
# these fixes conflict with each other, if the `--ignore` setting causes both
# to be enabled, disable both of them
CONFLICTING_CODES = ('W503', 'W504')
SELECTED_GLOBAL_FIXED_METHOD_CODES = ['W602', ]
# W602 is handled separately due to the need to avoid "with_traceback".
CODE_TO_2TO3 = {
'E231': ['ws_comma'],
'E721': ['idioms'],
'W601': ['has_key'],
'W603': ['ne'],
'W604': ['repr'],
'W690': ['apply',
'except',
'exitfunc',
'numliterals',
'operator',
'paren',
'reduce',
'renames',
'standarderror',
'sys_exc',
'throw',
'tuple_params',
'xreadlines']}
if sys.platform == 'win32': # pragma: no cover
DEFAULT_CONFIG = os.path.expanduser(r'~\.pycodestyle')
else:
DEFAULT_CONFIG = os.path.join(os.getenv('XDG_CONFIG_HOME') or
os.path.expanduser('~/.config'),
'pycodestyle')
# fallback, use .pep8
if not os.path.exists(DEFAULT_CONFIG): # pragma: no cover
if sys.platform == 'win32':
DEFAULT_CONFIG = os.path.expanduser(r'~\.pep8')
else:
DEFAULT_CONFIG = os.path.join(os.path.expanduser('~/.config'), 'pep8')
PROJECT_CONFIG = ('setup.cfg', 'tox.ini', '.pep8', '.flake8')
MAX_PYTHON_FILE_DETECTION_BYTES = 1024
def open_with_encoding(filename, mode='r', encoding=None, limit_byte_check=-1):
"""Return opened file with a specific encoding."""
if not encoding:
encoding = detect_encoding(filename, limit_byte_check=limit_byte_check)
return io.open(filename, mode=mode, encoding=encoding,
newline='') # Preserve line endings
def detect_encoding(filename, limit_byte_check=-1):
"""Return file encoding."""
try:
with open(filename, 'rb') as input_file:
from lib2to3.pgen2 import tokenize as lib2to3_tokenize
encoding = lib2to3_tokenize.detect_encoding(input_file.readline)[0]
with open_with_encoding(filename, encoding=encoding) as test_file:
test_file.read(limit_byte_check)
return encoding
except (LookupError, SyntaxError, UnicodeDecodeError):
return 'latin-1'
def readlines_from_file(filename):
"""Return contents of file."""
with open_with_encoding(filename) as input_file:
return input_file.readlines()
def extended_blank_lines(logical_line,
blank_lines,
blank_before,
indent_level,
previous_logical):
"""Check for missing blank lines after class declaration."""
if previous_logical.startswith('def '):
if blank_lines and pycodestyle.DOCSTRING_REGEX.match(logical_line):
yield (0, 'E303 too many blank lines ({})'.format(blank_lines))
elif pycodestyle.DOCSTRING_REGEX.match(previous_logical):
# Missing blank line between class docstring and method declaration.
if (
indent_level and
not blank_lines and
not blank_before and
logical_line.startswith(('def ')) and
'(self' in logical_line
):
yield (0, 'E301 expected 1 blank line, found 0')
pycodestyle.register_check(extended_blank_lines)
def continued_indentation(logical_line, tokens, indent_level, hang_closing,
indent_char, noqa):
"""Override pycodestyle's function to provide indentation information."""
first_row = tokens[0][2][0]
nrows = 1 + tokens[-1][2][0] - first_row
if noqa or nrows == 1:
return
# indent_next tells us whether the next block is indented. Assuming
# that it is indented by 4 spaces, then we should not allow 4-space
# indents on the final continuation line. In turn, some other
# indents are allowed to have an extra 4 spaces.
indent_next = logical_line.endswith(':')
row = depth = 0
valid_hangs = (
(DEFAULT_INDENT_SIZE,)
if indent_char != '\t' else (DEFAULT_INDENT_SIZE,
2 * DEFAULT_INDENT_SIZE)
)
# Remember how many brackets were opened on each line.
parens = [0] * nrows
# Relative indents of physical lines.
rel_indent = [0] * nrows
# For each depth, collect a list of opening rows.
open_rows = [[0]]
# For each depth, memorize the hanging indentation.
hangs = [None]
# Visual indents.
indent_chances = {}
last_indent = tokens[0][2]
indent = [last_indent[1]]
last_token_multiline = None
line = None
last_line = ''
last_line_begins_with_multiline = False
for token_type, text, start, end, line in tokens:
newline = row < start[0] - first_row
if newline:
row = start[0] - first_row
newline = (not last_token_multiline and
token_type not in (tokenize.NL, tokenize.NEWLINE))
last_line_begins_with_multiline = last_token_multiline
if newline:
# This is the beginning of a continuation line.
last_indent = start
# Record the initial indent.
rel_indent[row] = pycodestyle.expand_indent(line) - indent_level
# Identify closing bracket.
close_bracket = (token_type == tokenize.OP and text in ']})')
# Is the indent relative to an opening bracket line?
for open_row in reversed(open_rows[depth]):
hang = rel_indent[row] - rel_indent[open_row]
hanging_indent = hang in valid_hangs
if hanging_indent:
break
if hangs[depth]:
hanging_indent = (hang == hangs[depth])
visual_indent = (not close_bracket and hang > 0 and
indent_chances.get(start[1]))
if close_bracket and indent[depth]:
# Closing bracket for visual indent.
if start[1] != indent[depth]:
yield (start, 'E124 {}'.format(indent[depth]))
elif close_bracket and not hang:
# closing bracket matches indentation of opening bracket's line
if hang_closing:
yield (start, 'E133 {}'.format(indent[depth]))
elif indent[depth] and start[1] < indent[depth]:
if visual_indent is not True:
# Visual indent is broken.
yield (start, 'E128 {}'.format(indent[depth]))
elif (hanging_indent or
(indent_next and
rel_indent[row] == 2 * DEFAULT_INDENT_SIZE)):
# Hanging indent is verified.
if close_bracket and not hang_closing:
yield (start, 'E123 {}'.format(indent_level +
rel_indent[open_row]))
hangs[depth] = hang
elif visual_indent is True:
# Visual indent is verified.
indent[depth] = start[1]
elif visual_indent in (text, unicode):
# Ignore token lined up with matching one from a previous line.
pass
else:
one_indented = (indent_level + rel_indent[open_row] +
DEFAULT_INDENT_SIZE)
# Indent is broken.
if hang <= 0:
error = ('E122', one_indented)
elif indent[depth]:
error = ('E127', indent[depth])
elif not close_bracket and hangs[depth]:
error = ('E131', one_indented)
elif hang > DEFAULT_INDENT_SIZE:
error = ('E126', one_indented)
else:
hangs[depth] = hang
error = ('E121', one_indented)
yield (start, '{} {}'.format(*error))
# Look for visual indenting.
if (
parens[row] and
token_type not in (tokenize.NL, tokenize.COMMENT) and
not indent[depth]
):
indent[depth] = start[1]
indent_chances[start[1]] = True
# Deal with implicit string concatenation.
elif (token_type in (tokenize.STRING, tokenize.COMMENT) or
text in ('u', 'ur', 'b', 'br')):
indent_chances[start[1]] = unicode
# Special case for the "if" statement because len("if (") is equal to
# 4.
elif not indent_chances and not row and not depth and text == 'if':
indent_chances[end[1] + 1] = True
elif text == ':' and line[end[1]:].isspace():
open_rows[depth].append(row)
# Keep track of bracket depth.
if token_type == tokenize.OP:
if text in '([{':
depth += 1
indent.append(0)
hangs.append(None)
if len(open_rows) == depth:
open_rows.append([])
open_rows[depth].append(row)
parens[row] += 1
elif text in ')]}' and depth > 0:
# Parent indents should not be more than this one.
prev_indent = indent.pop() or last_indent[1]
hangs.pop()
for d in range(depth):
if indent[d] > prev_indent:
indent[d] = 0
for ind in list(indent_chances):
if ind >= prev_indent:
del indent_chances[ind]
del open_rows[depth + 1:]
depth -= 1
if depth:
indent_chances[indent[depth]] = True
for idx in range(row, -1, -1):
if parens[idx]:
parens[idx] -= 1
break
assert len(indent) == depth + 1
if (
start[1] not in indent_chances and
# This is for purposes of speeding up E121 (GitHub #90).
not last_line.rstrip().endswith(',')
):
# Allow to line up tokens.
indent_chances[start[1]] = text
last_token_multiline = (start[0] != end[0])
if last_token_multiline:
rel_indent[end[0] - first_row] = rel_indent[row]
last_line = line
if (
indent_next and
not last_line_begins_with_multiline and
pycodestyle.expand_indent(line) == indent_level + DEFAULT_INDENT_SIZE
):
pos = (start[0], indent[0] + 4)
desired_indent = indent_level + 2 * DEFAULT_INDENT_SIZE
if visual_indent:
yield (pos, 'E129 {}'.format(desired_indent))
else:
yield (pos, 'E125 {}'.format(desired_indent))
del pycodestyle._checks['logical_line'][pycodestyle.continued_indentation]
pycodestyle.register_check(continued_indentation)
class FixPEP8(object):
"""Fix invalid code.
Fixer methods are prefixed "fix_". The _fix_source() method looks for these
automatically.
The fixer method can take either one or two arguments (in addition to
self). The first argument is "result", which is the error information from
pycodestyle. The second argument, "logical", is required only for
logical-line fixes.
The fixer method can return the list of modified lines or None. An empty
list would mean that no changes were made. None would mean that only the
line reported in the pycodestyle error was modified. Note that the modified
line numbers that are returned are indexed at 1. This typically would
correspond with the line number reported in the pycodestyle error
information.
[fixed method list]
- e111,e114,e115,e116
- e121,e122,e123,e124,e125,e126,e127,e128,e129
- e201,e202,e203
- e211
- e221,e222,e223,e224,e225
- e231
- e251,e252
- e261,e262
- e271,e272,e273,e274
- e301,e302,e303,e304,e305,e306
- e401,e402
- e502
- e701,e702,e703,e704
- e711,e712,e713,e714
- e722
- e731
- w291
- w503,504
"""
def __init__(self, filename,
options,
contents=None,
long_line_ignore_cache=None):
self.filename = filename
if contents is None:
self.source = readlines_from_file(filename)
else:
sio = io.StringIO(contents)
self.source = sio.readlines()
self.options = options
self.indent_word = _get_indentword(''.join(self.source))
# collect imports line
self.imports = {}
for i, line in enumerate(self.source):
if (line.find("import ") == 0 or line.find("from ") == 0) and \
line not in self.imports:
# collect only import statements that first appeared
self.imports[line] = i
self.long_line_ignore_cache = (
set() if long_line_ignore_cache is None
else long_line_ignore_cache)
# Many fixers are the same even though pycodestyle categorizes them
# differently.
self.fix_e115 = self.fix_e112
self.fix_e121 = self._fix_reindent
self.fix_e122 = self._fix_reindent
self.fix_e123 = self._fix_reindent
self.fix_e124 = self._fix_reindent
self.fix_e126 = self._fix_reindent
self.fix_e127 = self._fix_reindent
self.fix_e128 = self._fix_reindent
self.fix_e129 = self._fix_reindent
self.fix_e133 = self.fix_e131
self.fix_e202 = self.fix_e201
self.fix_e203 = self.fix_e201
self.fix_e211 = self.fix_e201
self.fix_e221 = self.fix_e271
self.fix_e222 = self.fix_e271
self.fix_e223 = self.fix_e271
self.fix_e226 = self.fix_e225
self.fix_e227 = self.fix_e225
self.fix_e228 = self.fix_e225
self.fix_e241 = self.fix_e271
self.fix_e242 = self.fix_e224
self.fix_e252 = self.fix_e225
self.fix_e261 = self.fix_e262
self.fix_e272 = self.fix_e271
self.fix_e273 = self.fix_e271
self.fix_e274 = self.fix_e271
self.fix_e306 = self.fix_e301
self.fix_e501 = (
self.fix_long_line_logically if
options and (options.aggressive >= 2 or options.experimental) else
self.fix_long_line_physically)
self.fix_e703 = self.fix_e702
self.fix_w293 = self.fix_w291
def _fix_source(self, results):
try:
(logical_start, logical_end) = _find_logical(self.source)
logical_support = True
except (SyntaxError, tokenize.TokenError): # pragma: no cover
logical_support = False
completed_lines = set()
for result in sorted(results, key=_priority_key):
if result['line'] in completed_lines:
continue
fixed_methodname = 'fix_' + result['id'].lower()
if hasattr(self, fixed_methodname):
fix = getattr(self, fixed_methodname)
line_index = result['line'] - 1
original_line = self.source[line_index]
is_logical_fix = len(_get_parameters(fix)) > 2
if is_logical_fix:
logical = None
if logical_support:
logical = _get_logical(self.source,
result,
logical_start,
logical_end)
if logical and set(range(
logical[0][0] + 1,
logical[1][0] + 1)).intersection(
completed_lines):
continue
modified_lines = fix(result, logical)
else:
modified_lines = fix(result)
if modified_lines is None:
# Force logical fixes to report what they modified.
assert not is_logical_fix
if self.source[line_index] == original_line:
modified_lines = []
if modified_lines:
completed_lines.update(modified_lines)
elif modified_lines == []: # Empty list means no fix
if self.options.verbose >= 2:
print(
'---> Not fixing {error} on line {line}'.format(
error=result['id'], line=result['line']),
file=sys.stderr)
else: # We assume one-line fix when None.
completed_lines.add(result['line'])
else:
if self.options.verbose >= 3:
print(
"---> '{}' is not defined.".format(fixed_methodname),
file=sys.stderr)
info = result['info'].strip()
print('---> {}:{}:{}:{}'.format(self.filename,
result['line'],
result['column'],
info),
file=sys.stderr)
def fix(self):
"""Return a version of the source code with PEP 8 violations fixed."""
pep8_options = {
'ignore': self.options.ignore,
'select': self.options.select,
'max_line_length': self.options.max_line_length,
'hang_closing': self.options.hang_closing,
}
results = _execute_pep8(pep8_options, self.source)
if self.options.verbose:
progress = {}
for r in results:
if r['id'] not in progress:
progress[r['id']] = set()
progress[r['id']].add(r['line'])
print('---> {n} issue(s) to fix {progress}'.format(
n=len(results), progress=progress), file=sys.stderr)
if self.options.line_range:
start, end = self.options.line_range
results = [r for r in results
if start <= r['line'] <= end]
self._fix_source(filter_results(source=''.join(self.source),
results=results,
aggressive=self.options.aggressive))
if self.options.line_range:
# If number of lines has changed then change line_range.
count = sum(sline.count('\n')
for sline in self.source[start - 1:end])
self.options.line_range[1] = start + count - 1
return ''.join(self.source)
def _fix_reindent(self, result):
"""Fix a badly indented line.
This is done by adding or removing from its initial indent only.
"""
num_indent_spaces = int(result['info'].split()[1])
line_index = result['line'] - 1
target = self.source[line_index]
self.source[line_index] = ' ' * num_indent_spaces + target.lstrip()
def fix_e112(self, result):
"""Fix under-indented comments."""
line_index = result['line'] - 1
target = self.source[line_index]
if not target.lstrip().startswith('#'):
# Don't screw with invalid syntax.
return []
self.source[line_index] = self.indent_word + target
def fix_e113(self, result):
"""Fix unexpected indentation."""
line_index = result['line'] - 1
target = self.source[line_index]
indent = _get_indentation(target)
stripped = target.lstrip()
self.source[line_index] = indent[1:] + stripped
def fix_e116(self, result):
"""Fix over-indented comments."""
line_index = result['line'] - 1
target = self.source[line_index]
indent = _get_indentation(target)
stripped = target.lstrip()
if not stripped.startswith('#'):
# Don't screw with invalid syntax.
return []
self.source[line_index] = indent[1:] + stripped
def fix_e117(self, result):
"""Fix over-indented."""
line_index = result['line'] - 1
target = self.source[line_index]
indent = _get_indentation(target)
if indent == '\t':
return []
stripped = target.lstrip()
self.source[line_index] = indent[1:] + stripped
def fix_e125(self, result):
"""Fix indentation undistinguish from the next logical line."""
num_indent_spaces = int(result['info'].split()[1])
line_index = result['line'] - 1
target = self.source[line_index]
spaces_to_add = num_indent_spaces - len(_get_indentation(target))
indent = len(_get_indentation(target))
modified_lines = []
while len(_get_indentation(self.source[line_index])) >= indent:
self.source[line_index] = (' ' * spaces_to_add +
self.source[line_index])
modified_lines.append(1 + line_index) # Line indexed at 1.
line_index -= 1
return modified_lines
def fix_e131(self, result):
"""Fix indentation undistinguish from the next logical line."""
num_indent_spaces = int(result['info'].split()[1])
line_index = result['line'] - 1
target = self.source[line_index]
spaces_to_add = num_indent_spaces - len(_get_indentation(target))
if spaces_to_add >= 0:
self.source[line_index] = (' ' * spaces_to_add +
self.source[line_index])
else:
offset = abs(spaces_to_add)
self.source[line_index] = self.source[line_index][offset:]
def fix_e201(self, result):
"""Remove extraneous whitespace."""
line_index = result['line'] - 1
target = self.source[line_index]
offset = result['column'] - 1
fixed = fix_whitespace(target,
offset=offset,
replacement='')
self.source[line_index] = fixed
def fix_e224(self, result):
"""Remove extraneous whitespace around operator."""
target = self.source[result['line'] - 1]
offset = result['column'] - 1
fixed = target[:offset] + target[offset:].replace('\t', ' ')
self.source[result['line'] - 1] = fixed
def fix_e225(self, result):
"""Fix missing whitespace around operator."""
target = self.source[result['line'] - 1]
offset = result['column'] - 1
fixed = target[:offset] + ' ' + target[offset:]
# Only proceed if non-whitespace characters match.
# And make sure we don't break the indentation.
if (
fixed.replace(' ', '') == target.replace(' ', '') and
_get_indentation(fixed) == _get_indentation(target)
):
self.source[result['line'] - 1] = fixed
error_code = result.get('id', 0)
try:
ts = generate_tokens(fixed)
except (SyntaxError, tokenize.TokenError):
return
if not check_syntax(fixed.lstrip()):
return
errors = list(
pycodestyle.missing_whitespace_around_operator(fixed, ts))
for e in reversed(errors):
if error_code != e[1].split()[0]:
continue
offset = e[0][1]
fixed = fixed[:offset] + ' ' + fixed[offset:]
self.source[result['line'] - 1] = fixed
else:
return []
def fix_e231(self, result):
"""Add missing whitespace."""
line_index = result['line'] - 1
target = self.source[line_index]
offset = result['column']
fixed = target[:offset].rstrip() + ' ' + target[offset:].lstrip()
self.source[line_index] = fixed
def fix_e251(self, result):
"""Remove whitespace around parameter '=' sign."""
line_index = result['line'] - 1
target = self.source[line_index]
# This is necessary since pycodestyle sometimes reports columns that
# goes past the end of the physical line. This happens in cases like,
# foo(bar\n=None)
c = min(result['column'] - 1,
len(target) - 1)
if target[c].strip():
fixed = target
else:
fixed = target[:c].rstrip() + target[c:].lstrip()
# There could be an escaped newline
#
# def foo(a=\
# 1)
if fixed.endswith(('=\\\n', '=\\\r\n', '=\\\r')):
self.source[line_index] = fixed.rstrip('\n\r \t\\')
self.source[line_index + 1] = self.source[line_index + 1].lstrip()
return [line_index + 1, line_index + 2] # Line indexed at 1
self.source[result['line'] - 1] = fixed
def fix_e262(self, result):
"""Fix spacing after comment hash."""
target = self.source[result['line'] - 1]
offset = result['column']
code = target[:offset].rstrip(' \t#')
comment = target[offset:].lstrip(' \t#')
fixed = code + (' # ' + comment if comment.strip() else '\n')
self.source[result['line'] - 1] = fixed
def fix_e271(self, result):
"""Fix extraneous whitespace around keywords."""
line_index = result['line'] - 1
target = self.source[line_index]
offset = result['column'] - 1
fixed = fix_whitespace(target,
offset=offset,
replacement=' ')
if fixed == target:
return []
else:
self.source[line_index] = fixed
def fix_e301(self, result):
"""Add missing blank line."""
cr = '\n'
self.source[result['line'] - 1] = cr + self.source[result['line'] - 1]
def fix_e302(self, result):
"""Add missing 2 blank lines."""
add_linenum = 2 - int(result['info'].split()[-1])
offset = 1
if self.source[result['line'] - 2].strip() == "\\":
offset = 2
cr = '\n' * add_linenum
self.source[result['line'] - offset] = (
cr + self.source[result['line'] - offset]
)
def fix_e303(self, result):
"""Remove extra blank lines."""
delete_linenum = int(result['info'].split('(')[1].split(')')[0]) - 2
delete_linenum = max(1, delete_linenum)
# We need to count because pycodestyle reports an offset line number if
# there are comments.
cnt = 0
line = result['line'] - 2
modified_lines = []
while cnt < delete_linenum and line >= 0:
if not self.source[line].strip():
self.source[line] = ''
modified_lines.append(1 + line) # Line indexed at 1
cnt += 1
line -= 1
return modified_lines
def fix_e304(self, result):
"""Remove blank line following function decorator."""
line = result['line'] - 2
if not self.source[line].strip():
self.source[line] = ''
def fix_e305(self, result):
"""Add missing 2 blank lines after end of function or class."""
add_delete_linenum = 2 - int(result['info'].split()[-1])
cnt = 0
offset = result['line'] - 2
modified_lines = []
if add_delete_linenum < 0:
# delete cr
add_delete_linenum = abs(add_delete_linenum)
while cnt < add_delete_linenum and offset >= 0:
if not self.source[offset].strip():
self.source[offset] = ''
modified_lines.append(1 + offset) # Line indexed at 1
cnt += 1
offset -= 1
else:
# add cr
cr = '\n'
# check comment line
while True:
if offset < 0:
break
line = self.source[offset].lstrip()
if not line:
break
if line[0] != '#':
break
offset -= 1
offset += 1
self.source[offset] = cr + self.source[offset]
modified_lines.append(1 + offset) # Line indexed at 1.
return modified_lines
def fix_e401(self, result):
"""Put imports on separate lines."""
line_index = result['line'] - 1
target = self.source[line_index]
offset = result['column'] - 1
if not target.lstrip().startswith('import'):
return []
indentation = re.split(pattern=r'\bimport\b',
string=target, maxsplit=1)[0]
fixed = (target[:offset].rstrip('\t ,') + '\n' +
indentation + 'import ' + target[offset:].lstrip('\t ,'))
self.source[line_index] = fixed
def fix_e402(self, result):
(line_index, offset, target) = get_index_offset_contents(result,
self.source)
for i in range(1, 100):
line = "".join(self.source[line_index:line_index+i])
try:
generate_tokens("".join(line))
except (SyntaxError, tokenize.TokenError):
continue
break
if not (target in self.imports and self.imports[target] != line_index):
mod_offset = get_module_imports_on_top_of_file(self.source,
line_index)
self.source[mod_offset] = line + self.source[mod_offset]
for offset in range(i):
self.source[line_index+offset] = ''
def fix_long_line_logically(self, result, logical):
"""Try to make lines fit within --max-line-length characters."""
if (
not logical or
len(logical[2]) == 1 or
self.source[result['line'] - 1].lstrip().startswith('#')
):
return self.fix_long_line_physically(result)
start_line_index = logical[0][0]
end_line_index = logical[1][0]
logical_lines = logical[2]
previous_line = get_item(self.source, start_line_index - 1, default='')
next_line = get_item(self.source, end_line_index + 1, default='')
single_line = join_logical_line(''.join(logical_lines))
try:
fixed = self.fix_long_line(
target=single_line,
previous_line=previous_line,
next_line=next_line,
original=''.join(logical_lines))
except (SyntaxError, tokenize.TokenError):
return self.fix_long_line_physically(result)
if fixed:
for line_index in range(start_line_index, end_line_index + 1):
self.source[line_index] = ''
self.source[start_line_index] = fixed
return range(start_line_index + 1, end_line_index + 1)
return []
def fix_long_line_physically(self, result):
"""Try to make lines fit within --max-line-length characters."""
line_index = result['line'] - 1
target = self.source[line_index]
previous_line = get_item(self.source, line_index - 1, default='')
next_line = get_item(self.source, line_index + 1, default='')
try:
fixed = self.fix_long_line(
target=target,
previous_line=previous_line,
next_line=next_line,
original=target)
except (SyntaxError, tokenize.TokenError):
return []
if fixed:
self.source[line_index] = fixed
return [line_index + 1]
return []
def fix_long_line(self, target, previous_line,
next_line, original):
cache_entry = (target, previous_line, next_line)
if cache_entry in self.long_line_ignore_cache:
return []
if target.lstrip().startswith('#'):
if self.options.aggressive:
# Wrap commented lines.
return shorten_comment(
line=target,
max_line_length=self.options.max_line_length,
last_comment=not next_line.lstrip().startswith('#'))
return []
fixed = get_fixed_long_line(
target=target,
previous_line=previous_line,
original=original,
indent_word=self.indent_word,
max_line_length=self.options.max_line_length,
aggressive=self.options.aggressive,
experimental=self.options.experimental,
verbose=self.options.verbose)
if fixed and not code_almost_equal(original, fixed):
return fixed
self.long_line_ignore_cache.add(cache_entry)
return None
def fix_e502(self, result):
"""Remove extraneous escape of newline."""
(line_index, _, target) = get_index_offset_contents(result,
self.source)
self.source[line_index] = target.rstrip('\n\r \t\\') + '\n'
def fix_e701(self, result):
"""Put colon-separated compound statement on separate lines."""
line_index = result['line'] - 1
target = self.source[line_index]
c = result['column']
fixed_source = (target[:c] + '\n' +
_get_indentation(target) + self.indent_word +
target[c:].lstrip('\n\r \t\\'))
self.source[result['line'] - 1] = fixed_source
return [result['line'], result['line'] + 1]
def fix_e702(self, result, logical):
"""Put semicolon-separated compound statement on separate lines."""
if not logical:
return [] # pragma: no cover
logical_lines = logical[2]
# Avoid applying this when indented.
# https://docs.python.org/reference/compound_stmts.html
for line in logical_lines:
if (result['id'] == 'E702' and ':' in line
and STARTSWITH_INDENT_STATEMENT_REGEX.match(line)):
if self.options.verbose:
print(
'---> avoid fixing {error} with '
'other compound statements'.format(error=result['id']),
file=sys.stderr
)
return []
line_index = result['line'] - 1
target = self.source[line_index]
if target.rstrip().endswith('\\'):
# Normalize '1; \\\n2' into '1; 2'.
self.source[line_index] = target.rstrip('\n \r\t\\')
self.source[line_index + 1] = self.source[line_index + 1].lstrip()
return [line_index + 1, line_index + 2]
if target.rstrip().endswith(';'):
self.source[line_index] = target.rstrip('\n \r\t;') + '\n'
return [line_index + 1]
offset = result['column'] - 1
first = target[:offset].rstrip(';').rstrip()
second = (_get_indentation(logical_lines[0]) +
target[offset:].lstrip(';').lstrip())
# Find inline comment.
inline_comment = None
if target[offset:].lstrip(';').lstrip()[:2] == '# ':
inline_comment = target[offset:].lstrip(';')
if inline_comment:
self.source[line_index] = first + inline_comment
else:
self.source[line_index] = first + '\n' + second
return [line_index + 1]
def fix_e704(self, result):
"""Fix multiple statements on one line def"""
(line_index, _, target) = get_index_offset_contents(result,
self.source)
match = STARTSWITH_DEF_REGEX.match(target)
if match:
self.source[line_index] = '{}\n{}{}'.format(
match.group(0),
_get_indentation(target) + self.indent_word,
target[match.end(0):].lstrip())
def fix_e711(self, result):
"""Fix comparison with None."""
(line_index, offset, target) = get_index_offset_contents(result,
self.source)
right_offset = offset + 2
if right_offset >= len(target):
return []
left = target[:offset].rstrip()
center = target[offset:right_offset]
right = target[right_offset:].lstrip()
if center.strip() == '==':
new_center = 'is'
elif center.strip() == '!=':
new_center = 'is not'
else:
return []
self.source[line_index] = ' '.join([left, new_center, right])
def fix_e712(self, result):
"""Fix (trivial case of) comparison with boolean."""
(line_index, offset, target) = get_index_offset_contents(result,
self.source)
# Handle very easy "not" special cases.
if re.match(r'^\s*if [\w."\'\[\]]+ == False:$', target):
self.source[line_index] = re.sub(r'if ([\w."\'\[\]]+) == False:',
r'if not \1:', target, count=1)
elif re.match(r'^\s*if [\w."\'\[\]]+ != True:$', target):
self.source[line_index] = re.sub(r'if ([\w."\'\[\]]+) != True:',
r'if not \1:', target, count=1)
else:
right_offset = offset + 2
if right_offset >= len(target):
return []
left = target[:offset].rstrip()
center = target[offset:right_offset]
right = target[right_offset:].lstrip()
# Handle simple cases only.
new_right = None
if center.strip() == '==':
if re.match(r'\bTrue\b', right):
new_right = re.sub(r'\bTrue\b *', '', right, count=1)
elif center.strip() == '!=':
if re.match(r'\bFalse\b', right):
new_right = re.sub(r'\bFalse\b *', '', right, count=1)
if new_right is None:
return []
if new_right[0].isalnum():
new_right = ' ' + new_right
self.source[line_index] = left + new_right
def fix_e713(self, result):
"""Fix (trivial case of) non-membership check."""
(line_index, offset, target) = get_index_offset_contents(result,
self.source)
# to convert once 'not in' -> 'in'
before_target = target[:offset]
target = target[offset:]
match_notin = COMPARE_NEGATIVE_REGEX_THROUGH.search(target)
notin_pos_start, notin_pos_end = 0, 0
if match_notin:
notin_pos_start = match_notin.start(1)
notin_pos_end = match_notin.end()
target = '{}{} {}'.format(
target[:notin_pos_start], 'in', target[notin_pos_end:])
# fix 'not in'
match = COMPARE_NEGATIVE_REGEX.search(target)
if match:
if match.group(3) == 'in':
pos_start = match.start(1)
new_target = '{5}{0}{1} {2} {3} {4}'.format(
target[:pos_start], match.group(2), match.group(1),
match.group(3), target[match.end():], before_target)
if match_notin:
# revert 'in' -> 'not in'
pos_start = notin_pos_start + offset
pos_end = notin_pos_end + offset - 4 # len('not ')
new_target = '{}{} {}'.format(
new_target[:pos_start], 'not in', new_target[pos_end:])
self.source[line_index] = new_target
def fix_e714(self, result):
"""Fix object identity should be 'is not' case."""
(line_index, offset, target) = get_index_offset_contents(result,
self.source)
# to convert once 'is not' -> 'is'
before_target = target[:offset]
target = target[offset:]
match_isnot = COMPARE_NEGATIVE_REGEX_THROUGH.search(target)
isnot_pos_start, isnot_pos_end = 0, 0
if match_isnot:
isnot_pos_start = match_isnot.start(1)
isnot_pos_end = match_isnot.end()
target = '{}{} {}'.format(
target[:isnot_pos_start], 'in', target[isnot_pos_end:])
match = COMPARE_NEGATIVE_REGEX.search(target)
if match:
if match.group(3).startswith('is'):
pos_start = match.start(1)
new_target = '{5}{0}{1} {2} {3} {4}'.format(
target[:pos_start], match.group(2), match.group(3),
match.group(1), target[match.end():], before_target)
if match_isnot:
# revert 'is' -> 'is not'
pos_start = isnot_pos_start + offset
pos_end = isnot_pos_end + offset - 4 # len('not ')
new_target = '{}{} {}'.format(
new_target[:pos_start], 'is not', new_target[pos_end:])
self.source[line_index] = new_target
def fix_e722(self, result):
"""fix bare except"""
(line_index, _, target) = get_index_offset_contents(result,
self.source)
match = BARE_EXCEPT_REGEX.search(target)
if match:
self.source[line_index] = '{}{}{}'.format(
target[:result['column'] - 1], "except BaseException:",
target[match.end():])
def fix_e731(self, result):
"""Fix do not assign a lambda expression check."""
(line_index, _, target) = get_index_offset_contents(result,
self.source)
match = LAMBDA_REGEX.search(target)
if match:
end = match.end()
self.source[line_index] = '{}def {}({}): return {}'.format(
target[:match.start(0)], match.group(1), match.group(2),
target[end:].lstrip())
def fix_w291(self, result):
"""Remove trailing whitespace."""
fixed_line = self.source[result['line'] - 1].rstrip()
self.source[result['line'] - 1] = fixed_line + '\n'
def fix_w391(self, _):
"""Remove trailing blank lines."""
blank_count = 0
for line in reversed(self.source):
line = line.rstrip()
if line:
break
else:
blank_count += 1
original_length = len(self.source)
self.source = self.source[:original_length - blank_count]
return range(1, 1 + original_length)
def fix_w503(self, result):
(line_index, _, target) = get_index_offset_contents(result,
self.source)
one_string_token = target.split()[0]
try:
ts = generate_tokens(one_string_token)
except (SyntaxError, tokenize.TokenError):
return
if not _is_binary_operator(ts[0][0], one_string_token):
return
# find comment
comment_index = 0
found_not_comment_only_line = False
comment_only_linenum = 0
for i in range(5):
# NOTE: try to parse code in 5 times
if (line_index - i) < 0:
break
from_index = line_index - i - 1
if from_index < 0 or len(self.source) <= from_index:
break
to_index = line_index + 1
strip_line = self.source[from_index].lstrip()
if (
not found_not_comment_only_line and
strip_line and strip_line[0] == '#'
):
comment_only_linenum += 1
continue
found_not_comment_only_line = True
try:
ts = generate_tokens("".join(self.source[from_index:to_index]))
except (SyntaxError, tokenize.TokenError):
continue
newline_count = 0
newline_index = []
for index, t in enumerate(ts):
if t[0] in (tokenize.NEWLINE, tokenize.NL):
newline_index.append(index)
newline_count += 1
if newline_count > 2:
tts = ts[newline_index[-3]:]
else:
tts = ts
old = []
for t in tts:
if t[0] in (tokenize.NEWLINE, tokenize.NL):
newline_count -= 1
if newline_count <= 1:
break
if tokenize.COMMENT == t[0] and old and old[0] != tokenize.NL:
comment_index = old[3][1]
break
old = t
break
i = target.index(one_string_token)
fix_target_line = line_index - 1 - comment_only_linenum
self.source[line_index] = '{}{}'.format(
target[:i], target[i + len(one_string_token):].lstrip())
nl = find_newline(self.source[fix_target_line:line_index])
before_line = self.source[fix_target_line]
bl = before_line.index(nl)
if comment_index:
self.source[fix_target_line] = '{} {} {}'.format(
before_line[:comment_index], one_string_token,
before_line[comment_index + 1:])
else:
if before_line[:bl].endswith("#"):
# special case
# see: https://github.com/hhatto/autopep8/issues/503
self.source[fix_target_line] = '{}{} {}'.format(
before_line[:bl-2], one_string_token, before_line[bl-2:])
else:
self.source[fix_target_line] = '{} {}{}'.format(
before_line[:bl], one_string_token, before_line[bl:])
def fix_w504(self, result):
(line_index, _, target) = get_index_offset_contents(result,
self.source)
# NOTE: is not collect pointed out in pycodestyle==2.4.0
comment_index = 0
operator_position = None # (start_position, end_position)
for i in range(1, 6):
to_index = line_index + i
try:
ts = generate_tokens("".join(self.source[line_index:to_index]))
except (SyntaxError, tokenize.TokenError):
continue
newline_count = 0
newline_index = []
for index, t in enumerate(ts):
if _is_binary_operator(t[0], t[1]):
if t[2][0] == 1 and t[3][0] == 1:
operator_position = (t[2][1], t[3][1])
elif t[0] == tokenize.NAME and t[1] in ("and", "or"):
if t[2][0] == 1 and t[3][0] == 1:
operator_position = (t[2][1], t[3][1])
elif t[0] in (tokenize.NEWLINE, tokenize.NL):
newline_index.append(index)
newline_count += 1
if newline_count > 2:
tts = ts[:newline_index[-3]]
else:
tts = ts
old = []
for t in tts:
if tokenize.COMMENT == t[0] and old:
comment_row, comment_index = old[3]
break
old = t
break
if not operator_position:
return
target_operator = target[operator_position[0]:operator_position[1]]
if comment_index and comment_row == 1:
self.source[line_index] = '{}{}'.format(
target[:operator_position[0]].rstrip(),
target[comment_index:])
else:
self.source[line_index] = '{}{}{}'.format(
target[:operator_position[0]].rstrip(),
target[operator_position[1]:].lstrip(),
target[operator_position[1]:])
next_line = self.source[line_index + 1]
next_line_indent = 0
m = re.match(r'\s*', next_line)
if m:
next_line_indent = m.span()[1]
self.source[line_index + 1] = '{}{} {}'.format(
next_line[:next_line_indent], target_operator,
next_line[next_line_indent:])
def fix_w605(self, result):
(line_index, offset, target) = get_index_offset_contents(result,
self.source)
self.source[line_index] = '{}\\{}'.format(
target[:offset + 1], target[offset + 1:])
def get_module_imports_on_top_of_file(source, import_line_index):
"""return import or from keyword position
example:
> 0: import sys
1: import os
2:
3: def function():
"""
def is_string_literal(line):
if line[0] in 'uUbB':
line = line[1:]
if line and line[0] in 'rR':
line = line[1:]
return line and (line[0] == '"' or line[0] == "'")
def is_future_import(line):
nodes = ast.parse(line)
for n in nodes.body:
if isinstance(n, ast.ImportFrom) and n.module == '__future__':
return True
return False
def has_future_import(source):
offset = 0
line = ''
for _, next_line in source:
for line_part in next_line.strip().splitlines(True):
line = line + line_part
try:
return is_future_import(line), offset
except SyntaxError:
continue
offset += 1
return False, offset
allowed_try_keywords = ('try', 'except', 'else', 'finally')
in_docstring = False
docstring_kind = '"""'
source_stream = iter(enumerate(source))
for cnt, line in source_stream:
if not in_docstring:
m = DOCSTRING_START_REGEX.match(line.lstrip())
if m is not None:
in_docstring = True
docstring_kind = m.group('kind')
remain = line[m.end(): m.endpos].rstrip()
if remain[-3:] == docstring_kind: # one line doc
in_docstring = False
continue
if in_docstring:
if line.rstrip()[-3:] == docstring_kind:
in_docstring = False
continue
if not line.rstrip():
continue
elif line.startswith('#'):
continue
if line.startswith('import '):
if cnt == import_line_index:
continue
return cnt
elif line.startswith('from '):
if cnt == import_line_index:
continue
hit, offset = has_future_import(
itertools.chain([(cnt, line)], source_stream)
)
if hit:
# move to the back
return cnt + offset + 1
return cnt
elif pycodestyle.DUNDER_REGEX.match(line):
return cnt
elif any(line.startswith(kw) for kw in allowed_try_keywords):
continue
elif is_string_literal(line):
return cnt
else:
return cnt
return 0
def get_index_offset_contents(result, source):
"""Return (line_index, column_offset, line_contents)."""
line_index = result['line'] - 1
return (line_index,
result['column'] - 1,
source[line_index])
def get_fixed_long_line(target, previous_line, original,
indent_word=' ', max_line_length=79,
aggressive=False, experimental=False, verbose=False):
"""Break up long line and return result.
Do this by generating multiple reformatted candidates and then
ranking the candidates to heuristically select the best option.
"""
indent = _get_indentation(target)
source = target[len(indent):]
assert source.lstrip() == source
assert not target.lstrip().startswith('#')
# Check for partial multiline.
tokens = list(generate_tokens(source))
candidates = shorten_line(
tokens, source, indent,
indent_word,
max_line_length,
aggressive=aggressive,
experimental=experimental,
previous_line=previous_line)
# Also sort alphabetically as a tie breaker (for determinism).
candidates = sorted(
sorted(set(candidates).union([target, original])),
key=lambda x: line_shortening_rank(
x,
indent_word,
max_line_length,
experimental=experimental))
if verbose >= 4:
print(('-' * 79 + '\n').join([''] + candidates + ['']),
file=wrap_output(sys.stderr, 'utf-8'))
if candidates:
best_candidate = candidates[0]
# Don't allow things to get longer.
if longest_line_length(best_candidate) > longest_line_length(original):
return None
return best_candidate
def longest_line_length(code):
"""Return length of longest line."""
if len(code) == 0:
return 0
return max(len(line) for line in code.splitlines())
def join_logical_line(logical_line):
"""Return single line based on logical line input."""
indentation = _get_indentation(logical_line)
return indentation + untokenize_without_newlines(
generate_tokens(logical_line.lstrip())) + '\n'
def untokenize_without_newlines(tokens):
"""Return source code based on tokens."""
text = ''
last_row = 0
last_column = -1
for t in tokens:
token_string = t[1]
(start_row, start_column) = t[2]
(end_row, end_column) = t[3]
if start_row > last_row:
last_column = 0
if (
(start_column > last_column or token_string == '\n') and
not text.endswith(' ')
):
text += ' '
if token_string != '\n':
text += token_string
last_row = end_row
last_column = end_column
return text.rstrip()
def _find_logical(source_lines):
# Make a variable which is the index of all the starts of lines.
logical_start = []
logical_end = []
last_newline = True
parens = 0
for t in generate_tokens(''.join(source_lines)):
if t[0] in [tokenize.COMMENT, tokenize.DEDENT,
tokenize.INDENT, tokenize.NL,
tokenize.ENDMARKER]:
continue
if not parens and t[0] in [tokenize.NEWLINE, tokenize.SEMI]:
last_newline = True
logical_end.append((t[3][0] - 1, t[2][1]))
continue
if last_newline and not parens:
logical_start.append((t[2][0] - 1, t[2][1]))
last_newline = False
if t[0] == tokenize.OP:
if t[1] in '([{':
parens += 1
elif t[1] in '}])':
parens -= 1
return (logical_start, logical_end)
def _get_logical(source_lines, result, logical_start, logical_end):
"""Return the logical line corresponding to the result.
Assumes input is already E702-clean.
"""
row = result['line'] - 1
col = result['column'] - 1
ls = None
le = None
for i in range(0, len(logical_start), 1):
assert logical_end
x = logical_end[i]
if x[0] > row or (x[0] == row and x[1] > col):
le = x
ls = logical_start[i]
break
if ls is None:
return None
original = source_lines[ls[0]:le[0] + 1]
return ls, le, original
def get_item(items, index, default=None):
if 0 <= index < len(items):
return items[index]
return default
def reindent(source, indent_size):
"""Reindent all lines."""
reindenter = Reindenter(source)
return reindenter.run(indent_size)
def code_almost_equal(a, b):
"""Return True if code is similar.
Ignore whitespace when comparing specific line.
"""
split_a = split_and_strip_non_empty_lines(a)
split_b = split_and_strip_non_empty_lines(b)
if len(split_a) != len(split_b):
return False
for (index, _) in enumerate(split_a):
if ''.join(split_a[index].split()) != ''.join(split_b[index].split()):
return False
return True
def split_and_strip_non_empty_lines(text):
"""Return lines split by newline.
Ignore empty lines.
"""
return [line.strip() for line in text.splitlines() if line.strip()]
def fix_e265(source, aggressive=False): # pylint: disable=unused-argument
"""Format block comments."""
if '#' not in source:
# Optimization.
return source
ignored_line_numbers = multiline_string_lines(
source,
include_docstrings=True) | set(commented_out_code_lines(source))
fixed_lines = []
sio = io.StringIO(source)
for (line_number, line) in enumerate(sio.readlines(), start=1):
if (
line.lstrip().startswith('#') and
line_number not in ignored_line_numbers and
not pycodestyle.noqa(line)
):
indentation = _get_indentation(line)
line = line.lstrip()
# Normalize beginning if not a shebang.
if len(line) > 1:
pos = next((index for index, c in enumerate(line)
if c != '#'))
if (
# Leave multiple spaces like '# ' alone.
(line[:pos].count('#') > 1 or line[1].isalnum() or
not line[1].isspace()) and
line[1] not in ':!' and
# Leave stylistic outlined blocks alone.
not line.rstrip().endswith('#')
):
line = '# ' + line.lstrip('# \t')
fixed_lines.append(indentation + line)
else:
fixed_lines.append(line)
return ''.join(fixed_lines)
def refactor(source, fixer_names, ignore=None, filename=''):
"""Return refactored code using lib2to3.
Skip if ignore string is produced in the refactored code.
"""
from lib2to3 import pgen2
try:
new_text = refactor_with_2to3(source,
fixer_names=fixer_names,
filename=filename)
except (pgen2.parse.ParseError,
SyntaxError,
UnicodeDecodeError,
UnicodeEncodeError):
return source
if ignore:
if ignore in new_text and ignore not in source:
return source
return new_text
def code_to_2to3(select, ignore, where='', verbose=False):
fixes = set()
for code, fix in CODE_TO_2TO3.items():
if code_match(code, select=select, ignore=ignore):
if verbose:
print('---> Applying {} fix for {}'.format(where,
code.upper()),
file=sys.stderr)
fixes |= set(fix)
return fixes
def fix_2to3(source,
aggressive=True, select=None, ignore=None, filename='',
where='global', verbose=False):
"""Fix various deprecated code (via lib2to3)."""
if not aggressive:
return source
select = select or []
ignore = ignore or []
return refactor(source,
code_to_2to3(select=select,
ignore=ignore,
where=where,
verbose=verbose),
filename=filename)
def fix_w602(source, aggressive=True):
"""Fix deprecated form of raising exception."""
if not aggressive:
return source
return refactor(source, ['raise'], ignore='with_traceback')
def find_newline(source):
"""Return type of newline used in source.
Input is a list of lines.
"""
assert not isinstance(source, unicode)
counter = collections.defaultdict(int)
for line in source:
if line.endswith(CRLF):
counter[CRLF] += 1
elif line.endswith(CR):
counter[CR] += 1
elif line.endswith(LF):
counter[LF] += 1
return (sorted(counter, key=counter.get, reverse=True) or [LF])[0]
def _get_indentword(source):
"""Return indentation type."""
indent_word = ' ' # Default in case source has no indentation
try:
for t in generate_tokens(source):
if t[0] == token.INDENT:
indent_word = t[1]
break
except (SyntaxError, tokenize.TokenError):
pass
return indent_word
def _get_indentation(line):
"""Return leading whitespace."""
if line.strip():
non_whitespace_index = len(line) - len(line.lstrip())
return line[:non_whitespace_index]
return ''
def get_diff_text(old, new, filename):
"""Return text of unified diff between old and new."""
newline = '\n'
diff = difflib.unified_diff(
old, new,
'original/' + filename,
'fixed/' + filename,
lineterm=newline)
text = ''
for line in diff:
text += line
# Work around missing newline (http://bugs.python.org/issue2142).
if text and not line.endswith(newline):
text += newline + r'\ No newline at end of file' + newline
return text
def _priority_key(pep8_result):
"""Key for sorting PEP8 results.
Global fixes should be done first. This is important for things like
indentation.
"""
priority = [
# Fix multiline colon-based before semicolon based.
'e701',
# Break multiline statements early.
'e702',
# Things that make lines longer.
'e225', 'e231',
# Remove extraneous whitespace before breaking lines.
'e201',
# Shorten whitespace in comment before resorting to wrapping.
'e262'
]
middle_index = 10000
lowest_priority = [
# We need to shorten lines last since the logical fixer can get in a
# loop, which causes us to exit early.
'e501',
]
key = pep8_result['id'].lower()
try:
return priority.index(key)
except ValueError:
try:
return middle_index + lowest_priority.index(key) + 1
except ValueError:
return middle_index
def shorten_line(tokens, source, indentation, indent_word, max_line_length,
aggressive=False, experimental=False, previous_line=''):
"""Separate line at OPERATOR.
Multiple candidates will be yielded.
"""
for candidate in _shorten_line(tokens=tokens,
source=source,
indentation=indentation,
indent_word=indent_word,
aggressive=aggressive,
previous_line=previous_line):
yield candidate
if aggressive:
for key_token_strings in SHORTEN_OPERATOR_GROUPS:
shortened = _shorten_line_at_tokens(
tokens=tokens,
source=source,
indentation=indentation,
indent_word=indent_word,
key_token_strings=key_token_strings,
aggressive=aggressive)
if shortened is not None and shortened != source:
yield shortened
if experimental:
for shortened in _shorten_line_at_tokens_new(
tokens=tokens,
source=source,
indentation=indentation,
max_line_length=max_line_length):
yield shortened
def _shorten_line(tokens, source, indentation, indent_word,
aggressive=False, previous_line=''):
"""Separate line at OPERATOR.
The input is expected to be free of newlines except for inside multiline
strings and at the end.
Multiple candidates will be yielded.
"""
for (token_type,
token_string,
start_offset,
end_offset) in token_offsets(tokens):
if (
token_type == tokenize.COMMENT and
not is_probably_part_of_multiline(previous_line) and
not is_probably_part_of_multiline(source) and
not source[start_offset + 1:].strip().lower().startswith(
('noqa', 'pragma:', 'pylint:'))
):
# Move inline comments to previous line.
first = source[:start_offset]
second = source[start_offset:]
yield (indentation + second.strip() + '\n' +
indentation + first.strip() + '\n')
elif token_type == token.OP and token_string != '=':
# Don't break on '=' after keyword as this violates PEP 8.
assert token_type != token.INDENT
first = source[:end_offset]
second_indent = indentation
if (first.rstrip().endswith('(') and
source[end_offset:].lstrip().startswith(')')):
pass
elif first.rstrip().endswith('('):
second_indent += indent_word
elif '(' in first:
second_indent += ' ' * (1 + first.find('('))
else:
second_indent += indent_word
second = (second_indent + source[end_offset:].lstrip())
if (
not second.strip() or
second.lstrip().startswith('#')
):
continue
# Do not begin a line with a comma
if second.lstrip().startswith(','):
continue
# Do end a line with a dot
if first.rstrip().endswith('.'):
continue
if token_string in '+-*/':
fixed = first + ' \\' + '\n' + second
else:
fixed = first + '\n' + second
# Only fix if syntax is okay.
if check_syntax(normalize_multiline(fixed)
if aggressive else fixed):
yield indentation + fixed
def _is_binary_operator(token_type, text):
return ((token_type == tokenize.OP or text in ['and', 'or']) and
text not in '()[]{},:.;@=%~')
# A convenient way to handle tokens.
Token = collections.namedtuple('Token', ['token_type', 'token_string',
'spos', 'epos', 'line'])
class ReformattedLines(object):
"""The reflowed lines of atoms.
Each part of the line is represented as an "atom." They can be moved
around when need be to get the optimal formatting.
"""
###########################################################################
# Private Classes
class _Indent(object):
"""Represent an indentation in the atom stream."""
def __init__(self, indent_amt):
self._indent_amt = indent_amt
def emit(self):
return ' ' * self._indent_amt
@property
def size(self):
return self._indent_amt
class _Space(object):
"""Represent a space in the atom stream."""
def emit(self):
return ' '
@property
def size(self):
return 1
class _LineBreak(object):
"""Represent a line break in the atom stream."""
def emit(self):
return '\n'
@property
def size(self):
return 0
def __init__(self, max_line_length):
self._max_line_length = max_line_length
self._lines = []
self._bracket_depth = 0
self._prev_item = None
self._prev_prev_item = None
def __repr__(self):
return self.emit()
###########################################################################
# Public Methods
def add(self, obj, indent_amt, break_after_open_bracket):
if isinstance(obj, Atom):
self._add_item(obj, indent_amt)
return
self._add_container(obj, indent_amt, break_after_open_bracket)
def add_comment(self, item):
num_spaces = 2
if len(self._lines) > 1:
if isinstance(self._lines[-1], self._Space):
num_spaces -= 1
if len(self._lines) > 2:
if isinstance(self._lines[-2], self._Space):
num_spaces -= 1
while num_spaces > 0:
self._lines.append(self._Space())
num_spaces -= 1
self._lines.append(item)
def add_indent(self, indent_amt):
self._lines.append(self._Indent(indent_amt))
def add_line_break(self, indent):
self._lines.append(self._LineBreak())
self.add_indent(len(indent))
def add_line_break_at(self, index, indent_amt):
self._lines.insert(index, self._LineBreak())
self._lines.insert(index + 1, self._Indent(indent_amt))
def add_space_if_needed(self, curr_text, equal=False):
if (
not self._lines or isinstance(
self._lines[-1], (self._LineBreak, self._Indent, self._Space))
):
return
prev_text = unicode(self._prev_item)
prev_prev_text = (
unicode(self._prev_prev_item) if self._prev_prev_item else '')
if (
# The previous item was a keyword or identifier and the current
# item isn't an operator that doesn't require a space.
((self._prev_item.is_keyword or self._prev_item.is_string or
self._prev_item.is_name or self._prev_item.is_number) and
(curr_text[0] not in '([{.,:}])' or
(curr_text[0] == '=' and equal))) or
# Don't place spaces around a '.', unless it's in an 'import'
# statement.
((prev_prev_text != 'from' and prev_text[-1] != '.' and
curr_text != 'import') and
# Don't place a space before a colon.
curr_text[0] != ':' and
# Don't split up ending brackets by spaces.
((prev_text[-1] in '}])' and curr_text[0] not in '.,}])') or
# Put a space after a colon or comma.
prev_text[-1] in ':,' or
# Put space around '=' if asked to.
(equal and prev_text == '=') or
# Put spaces around non-unary arithmetic operators.
((self._prev_prev_item and
(prev_text not in '+-' and
(self._prev_prev_item.is_name or
self._prev_prev_item.is_number or
self._prev_prev_item.is_string)) and
prev_text in ('+', '-', '%', '*', '/', '//', '**', 'in')))))
):
self._lines.append(self._Space())
def previous_item(self):
"""Return the previous non-whitespace item."""
return self._prev_item
def fits_on_current_line(self, item_extent):
return self.current_size() + item_extent <= self._max_line_length
def current_size(self):
"""The size of the current line minus the indentation."""
size = 0
for item in reversed(self._lines):
size += item.size
if isinstance(item, self._LineBreak):
break
return size
def line_empty(self):
return (self._lines and
isinstance(self._lines[-1],
(self._LineBreak, self._Indent)))
def emit(self):
string = ''
for item in self._lines:
if isinstance(item, self._LineBreak):
string = string.rstrip()
string += item.emit()
return string.rstrip() + '\n'
###########################################################################
# Private Methods
def _add_item(self, item, indent_amt):
"""Add an item to the line.
Reflow the line to get the best formatting after the item is
inserted. The bracket depth indicates if the item is being
inserted inside of a container or not.
"""
if self._prev_item and self._prev_item.is_string and item.is_string:
# Place consecutive string literals on separate lines.
self._lines.append(self._LineBreak())
self._lines.append(self._Indent(indent_amt))
item_text = unicode(item)
if self._lines and self._bracket_depth:
# Adding the item into a container.
self._prevent_default_initializer_splitting(item, indent_amt)
if item_text in '.,)]}':
self._split_after_delimiter(item, indent_amt)
elif self._lines and not self.line_empty():
# Adding the item outside of a container.
if self.fits_on_current_line(len(item_text)):
self._enforce_space(item)
else:
# Line break for the new item.
self._lines.append(self._LineBreak())
self._lines.append(self._Indent(indent_amt))
self._lines.append(item)
self._prev_item, self._prev_prev_item = item, self._prev_item
if item_text in '([{':
self._bracket_depth += 1
elif item_text in '}])':
self._bracket_depth -= 1
assert self._bracket_depth >= 0
def _add_container(self, container, indent_amt, break_after_open_bracket):
actual_indent = indent_amt + 1
if (
unicode(self._prev_item) != '=' and
not self.line_empty() and
not self.fits_on_current_line(
container.size + self._bracket_depth + 2)
):
if unicode(container)[0] == '(' and self._prev_item.is_name:
# Don't split before the opening bracket of a call.
break_after_open_bracket = True
actual_indent = indent_amt + 4
elif (
break_after_open_bracket or
unicode(self._prev_item) not in '([{'
):
# If the container doesn't fit on the current line and the
# current line isn't empty, place the container on the next
# line.
self._lines.append(self._LineBreak())
self._lines.append(self._Indent(indent_amt))
break_after_open_bracket = False
else:
actual_indent = self.current_size() + 1
break_after_open_bracket = False
if isinstance(container, (ListComprehension, IfExpression)):
actual_indent = indent_amt
# Increase the continued indentation only if recursing on a
# container.
container.reflow(self, ' ' * actual_indent,
break_after_open_bracket=break_after_open_bracket)
def _prevent_default_initializer_splitting(self, item, indent_amt):
"""Prevent splitting between a default initializer.
When there is a default initializer, it's best to keep it all on
the same line. It's nicer and more readable, even if it goes
over the maximum allowable line length. This goes back along the
current line to determine if we have a default initializer, and,
if so, to remove extraneous whitespaces and add a line
break/indent before it if needed.
"""
if unicode(item) == '=':
# This is the assignment in the initializer. Just remove spaces for
# now.
self._delete_whitespace()
return
if (not self._prev_item or not self._prev_prev_item or
unicode(self._prev_item) != '='):
return
self._delete_whitespace()
prev_prev_index = self._lines.index(self._prev_prev_item)
if (
isinstance(self._lines[prev_prev_index - 1], self._Indent) or
self.fits_on_current_line(item.size + 1)
):
# The default initializer is already the only item on this line.
# Don't insert a newline here.
return
# Replace the space with a newline/indent combo.
if isinstance(self._lines[prev_prev_index - 1], self._Space):
del self._lines[prev_prev_index - 1]
self.add_line_break_at(self._lines.index(self._prev_prev_item),
indent_amt)
def _split_after_delimiter(self, item, indent_amt):
"""Split the line only after a delimiter."""
self._delete_whitespace()
if self.fits_on_current_line(item.size):
return
last_space = None
for current_item in reversed(self._lines):
if (
last_space and
(not isinstance(current_item, Atom) or
not current_item.is_colon)
):
break
else:
last_space = None
if isinstance(current_item, self._Space):
last_space = current_item
if isinstance(current_item, (self._LineBreak, self._Indent)):
return
if not last_space:
return
self.add_line_break_at(self._lines.index(last_space), indent_amt)
def _enforce_space(self, item):
"""Enforce a space in certain situations.
There are cases where we will want a space where normally we
wouldn't put one. This just enforces the addition of a space.
"""
if isinstance(self._lines[-1],
(self._Space, self._LineBreak, self._Indent)):
return
if not self._prev_item:
return
item_text = unicode(item)
prev_text = unicode(self._prev_item)
# Prefer a space around a '.' in an import statement, and between the
# 'import' and '('.
if (
(item_text == '.' and prev_text == 'from') or
(item_text == 'import' and prev_text == '.') or
(item_text == '(' and prev_text == 'import')
):
self._lines.append(self._Space())
def _delete_whitespace(self):
"""Delete all whitespace from the end of the line."""
while isinstance(self._lines[-1], (self._Space, self._LineBreak,
self._Indent)):
del self._lines[-1]
class Atom(object):
"""The smallest unbreakable unit that can be reflowed."""
def __init__(self, atom):
self._atom = atom
def __repr__(self):
return self._atom.token_string
def __len__(self):
return self.size
def reflow(
self, reflowed_lines, continued_indent, extent,
break_after_open_bracket=False,
is_list_comp_or_if_expr=False,
next_is_dot=False
):
if self._atom.token_type == tokenize.COMMENT:
reflowed_lines.add_comment(self)
return
total_size = extent if extent else self.size
if self._atom.token_string not in ',:([{}])':
# Some atoms will need an extra 1-sized space token after them.
total_size += 1
prev_item = reflowed_lines.previous_item()
if (
not is_list_comp_or_if_expr and
not reflowed_lines.fits_on_current_line(total_size) and
not (next_is_dot and
reflowed_lines.fits_on_current_line(self.size + 1)) and
not reflowed_lines.line_empty() and
not self.is_colon and
not (prev_item and prev_item.is_name and
unicode(self) == '(')
):
# Start a new line if there is already something on the line and
# adding this atom would make it go over the max line length.
reflowed_lines.add_line_break(continued_indent)
else:
reflowed_lines.add_space_if_needed(unicode(self))
reflowed_lines.add(self, len(continued_indent),
break_after_open_bracket)
def emit(self):
return self.__repr__()
@property
def is_keyword(self):
return keyword.iskeyword(self._atom.token_string)
@property
def is_string(self):
return self._atom.token_type == tokenize.STRING
@property
def is_name(self):
return self._atom.token_type == tokenize.NAME
@property
def is_number(self):
return self._atom.token_type == tokenize.NUMBER
@property
def is_comma(self):
return self._atom.token_string == ','
@property
def is_colon(self):
return self._atom.token_string == ':'
@property
def size(self):
return len(self._atom.token_string)
class Container(object):
"""Base class for all container types."""
def __init__(self, items):
self._items = items
def __repr__(self):
string = ''
last_was_keyword = False
for item in self._items:
if item.is_comma:
string += ', '
elif item.is_colon:
string += ': '
else:
item_string = unicode(item)
if (
string and
(last_was_keyword or
(not string.endswith(tuple('([{,.:}]) ')) and
not item_string.startswith(tuple('([{,.:}])'))))
):
string += ' '
string += item_string
last_was_keyword = item.is_keyword
return string
def __iter__(self):
for element in self._items:
yield element
def __getitem__(self, idx):
return self._items[idx]
def reflow(self, reflowed_lines, continued_indent,
break_after_open_bracket=False):
last_was_container = False
for (index, item) in enumerate(self._items):
next_item = get_item(self._items, index + 1)
if isinstance(item, Atom):
is_list_comp_or_if_expr = (
isinstance(self, (ListComprehension, IfExpression)))
item.reflow(reflowed_lines, continued_indent,
self._get_extent(index),
is_list_comp_or_if_expr=is_list_comp_or_if_expr,
next_is_dot=(next_item and
unicode(next_item) == '.'))
if last_was_container and item.is_comma:
reflowed_lines.add_line_break(continued_indent)
last_was_container = False
else: # isinstance(item, Container)
reflowed_lines.add(item, len(continued_indent),
break_after_open_bracket)
last_was_container = not isinstance(item, (ListComprehension,
IfExpression))
if (
break_after_open_bracket and index == 0 and
# Prefer to keep empty containers together instead of
# separating them.
unicode(item) == self.open_bracket and
(not next_item or unicode(next_item) != self.close_bracket) and
(len(self._items) != 3 or not isinstance(next_item, Atom))
):
reflowed_lines.add_line_break(continued_indent)
break_after_open_bracket = False
else:
next_next_item = get_item(self._items, index + 2)
if (
unicode(item) not in ['.', '%', 'in'] and
next_item and not isinstance(next_item, Container) and
unicode(next_item) != ':' and
next_next_item and (not isinstance(next_next_item, Atom) or
unicode(next_item) == 'not') and
not reflowed_lines.line_empty() and
not reflowed_lines.fits_on_current_line(
self._get_extent(index + 1) + 2)
):
reflowed_lines.add_line_break(continued_indent)
def _get_extent(self, index):
"""The extent of the full element.
E.g., the length of a function call or keyword.
"""
extent = 0
prev_item = get_item(self._items, index - 1)
seen_dot = prev_item and unicode(prev_item) == '.'
while index < len(self._items):
item = get_item(self._items, index)
index += 1
if isinstance(item, (ListComprehension, IfExpression)):
break
if isinstance(item, Container):
if prev_item and prev_item.is_name:
if seen_dot:
extent += 1
else:
extent += item.size
prev_item = item
continue
elif (unicode(item) not in ['.', '=', ':', 'not'] and
not item.is_name and not item.is_string):
break
if unicode(item) == '.':
seen_dot = True
extent += item.size
prev_item = item
return extent
@property
def is_string(self):
return False
@property
def size(self):
return len(self.__repr__())
@property
def is_keyword(self):
return False
@property
def is_name(self):
return False
@property
def is_comma(self):
return False
@property
def is_colon(self):
return False
@property
def open_bracket(self):
return None
@property
def close_bracket(self):
return None
class Tuple(Container):
"""A high-level representation of a tuple."""
@property
def open_bracket(self):
return '('
@property
def close_bracket(self):
return ')'
class List(Container):
"""A high-level representation of a list."""
@property
def open_bracket(self):
return '['
@property
def close_bracket(self):
return ']'
class DictOrSet(Container):
"""A high-level representation of a dictionary or set."""
@property
def open_bracket(self):
return '{'
@property
def close_bracket(self):
return '}'
class ListComprehension(Container):
"""A high-level representation of a list comprehension."""
@property
def size(self):
length = 0
for item in self._items:
if isinstance(item, IfExpression):
break
length += item.size
return length
class IfExpression(Container):
"""A high-level representation of an if-expression."""
def _parse_container(tokens, index, for_or_if=None):
"""Parse a high-level container, such as a list, tuple, etc."""
# Store the opening bracket.
items = [Atom(Token(*tokens[index]))]
index += 1
num_tokens = len(tokens)
while index < num_tokens:
tok = Token(*tokens[index])
if tok.token_string in ',)]}':
# First check if we're at the end of a list comprehension or
# if-expression. Don't add the ending token as part of the list
# comprehension or if-expression, because they aren't part of those
# constructs.
if for_or_if == 'for':
return (ListComprehension(items), index - 1)
elif for_or_if == 'if':
return (IfExpression(items), index - 1)
# We've reached the end of a container.
items.append(Atom(tok))
# If not, then we are at the end of a container.
if tok.token_string == ')':
# The end of a tuple.
return (Tuple(items), index)
elif tok.token_string == ']':
# The end of a list.
return (List(items), index)
elif tok.token_string == '}':
# The end of a dictionary or set.
return (DictOrSet(items), index)
elif tok.token_string in '([{':
# A sub-container is being defined.
(container, index) = _parse_container(tokens, index)
items.append(container)
elif tok.token_string == 'for':
(container, index) = _parse_container(tokens, index, 'for')
items.append(container)
elif tok.token_string == 'if':
(container, index) = _parse_container(tokens, index, 'if')
items.append(container)
else:
items.append(Atom(tok))
index += 1
return (None, None)
def _parse_tokens(tokens):
"""Parse the tokens.
This converts the tokens into a form where we can manipulate them
more easily.
"""
index = 0
parsed_tokens = []
num_tokens = len(tokens)
while index < num_tokens:
tok = Token(*tokens[index])
assert tok.token_type != token.INDENT
if tok.token_type == tokenize.NEWLINE:
# There's only one newline and it's at the end.
break
if tok.token_string in '([{':
(container, index) = _parse_container(tokens, index)
if not container:
return None
parsed_tokens.append(container)
else:
parsed_tokens.append(Atom(tok))
index += 1
return parsed_tokens
def _reflow_lines(parsed_tokens, indentation, max_line_length,
start_on_prefix_line):
"""Reflow the lines so that it looks nice."""
if unicode(parsed_tokens[0]) == 'def':
# A function definition gets indented a bit more.
continued_indent = indentation + ' ' * 2 * DEFAULT_INDENT_SIZE
else:
continued_indent = indentation + ' ' * DEFAULT_INDENT_SIZE
break_after_open_bracket = not start_on_prefix_line
lines = ReformattedLines(max_line_length)
lines.add_indent(len(indentation.lstrip('\r\n')))
if not start_on_prefix_line:
# If splitting after the opening bracket will cause the first element
# to be aligned weirdly, don't try it.
first_token = get_item(parsed_tokens, 0)
second_token = get_item(parsed_tokens, 1)
if (
first_token and second_token and
unicode(second_token)[0] == '(' and
len(indentation) + len(first_token) + 1 == len(continued_indent)
):
return None
for item in parsed_tokens:
lines.add_space_if_needed(unicode(item), equal=True)
save_continued_indent = continued_indent
if start_on_prefix_line and isinstance(item, Container):
start_on_prefix_line = False
continued_indent = ' ' * (lines.current_size() + 1)
item.reflow(lines, continued_indent, break_after_open_bracket)
continued_indent = save_continued_indent
return lines.emit()
def _shorten_line_at_tokens_new(tokens, source, indentation,
max_line_length):
"""Shorten the line taking its length into account.
The input is expected to be free of newlines except for inside
multiline strings and at the end.
"""
# Yield the original source so to see if it's a better choice than the
# shortened candidate lines we generate here.
yield indentation + source
parsed_tokens = _parse_tokens(tokens)
if parsed_tokens:
# Perform two reflows. The first one starts on the same line as the
# prefix. The second starts on the line after the prefix.
fixed = _reflow_lines(parsed_tokens, indentation, max_line_length,
start_on_prefix_line=True)
if fixed and check_syntax(normalize_multiline(fixed.lstrip())):
yield fixed
fixed = _reflow_lines(parsed_tokens, indentation, max_line_length,
start_on_prefix_line=False)
if fixed and check_syntax(normalize_multiline(fixed.lstrip())):
yield fixed
def _shorten_line_at_tokens(tokens, source, indentation, indent_word,
key_token_strings, aggressive):
"""Separate line by breaking at tokens in key_token_strings.
The input is expected to be free of newlines except for inside
multiline strings and at the end.
"""
offsets = []
for (index, _t) in enumerate(token_offsets(tokens)):
(token_type,
token_string,
start_offset,
end_offset) = _t
assert token_type != token.INDENT
if token_string in key_token_strings:
# Do not break in containers with zero or one items.
unwanted_next_token = {
'(': ')',
'[': ']',
'{': '}'}.get(token_string)
if unwanted_next_token:
if (
get_item(tokens,
index + 1,
default=[None, None])[1] == unwanted_next_token or
get_item(tokens,
index + 2,
default=[None, None])[1] == unwanted_next_token
):
continue
if (
index > 2 and token_string == '(' and
tokens[index - 1][1] in ',(%['
):
# Don't split after a tuple start, or before a tuple start if
# the tuple is in a list.
continue
if end_offset < len(source) - 1:
# Don't split right before newline.
offsets.append(end_offset)
else:
# Break at adjacent strings. These were probably meant to be on
# separate lines in the first place.
previous_token = get_item(tokens, index - 1)
if (
token_type == tokenize.STRING and
previous_token and previous_token[0] == tokenize.STRING
):
offsets.append(start_offset)
current_indent = None
fixed = None
for line in split_at_offsets(source, offsets):
if fixed:
fixed += '\n' + current_indent + line
for symbol in '([{':
if line.endswith(symbol):
current_indent += indent_word
else:
# First line.
fixed = line
assert not current_indent
current_indent = indent_word
assert fixed is not None
if check_syntax(normalize_multiline(fixed)
if aggressive > 1 else fixed):
return indentation + fixed
return None
def token_offsets(tokens):
"""Yield tokens and offsets."""
end_offset = 0
previous_end_row = 0
previous_end_column = 0
for t in tokens:
token_type = t[0]
token_string = t[1]
(start_row, start_column) = t[2]
(end_row, end_column) = t[3]
# Account for the whitespace between tokens.
end_offset += start_column
if previous_end_row == start_row:
end_offset -= previous_end_column
# Record the start offset of the token.
start_offset = end_offset
# Account for the length of the token itself.
end_offset += len(token_string)
yield (token_type,
token_string,
start_offset,
end_offset)
previous_end_row = end_row
previous_end_column = end_column
def normalize_multiline(line):
"""Normalize multiline-related code that will cause syntax error.
This is for purposes of checking syntax.
"""
if line.startswith('def ') and line.rstrip().endswith(':'):
return line + ' pass'
elif line.startswith('return '):
return 'def _(): ' + line
elif line.startswith('@'):
return line + 'def _(): pass'
elif line.startswith('class '):
return line + ' pass'
elif line.startswith(('if ', 'elif ', 'for ', 'while ')):
return line + ' pass'
return line
def fix_whitespace(line, offset, replacement):
"""Replace whitespace at offset and return fixed line."""
# Replace escaped newlines too
left = line[:offset].rstrip('\n\r \t\\')
right = line[offset:].lstrip('\n\r \t\\')
if right.startswith('#'):
return line
return left + replacement + right
def _execute_pep8(pep8_options, source):
"""Execute pycodestyle via python method calls."""
class QuietReport(pycodestyle.BaseReport):
"""Version of checker that does not print."""
def __init__(self, options):
super(QuietReport, self).__init__(options)
self.__full_error_results = []
def error(self, line_number, offset, text, check):
"""Collect errors."""
code = super(QuietReport, self).error(line_number,
offset,
text,
check)
if code:
self.__full_error_results.append(
{'id': code,
'line': line_number,
'column': offset + 1,
'info': text})
def full_error_results(self):
"""Return error results in detail.
Results are in the form of a list of dictionaries. Each
dictionary contains 'id', 'line', 'column', and 'info'.
"""
return self.__full_error_results
checker = pycodestyle.Checker('', lines=source, reporter=QuietReport,
**pep8_options)
checker.check_all()
return checker.report.full_error_results()
def _remove_leading_and_normalize(line):
# ignore FF in first lstrip()
return line.lstrip(' \t\v').rstrip(CR + LF) + '\n'
class Reindenter(object):
"""Reindents badly-indented code to uniformly use four-space indentation.
Released to the public domain, by Tim Peters, 03 October 2000.
"""
def __init__(self, input_text):
sio = io.StringIO(input_text)
source_lines = sio.readlines()
self.string_content_line_numbers = multiline_string_lines(input_text)
# File lines, rstripped & tab-expanded. Dummy at start is so
# that we can use tokenize's 1-based line numbering easily.
# Note that a line is all-blank iff it is a newline.
self.lines = []
for line_number, line in enumerate(source_lines, start=1):
# Do not modify if inside a multiline string.
if line_number in self.string_content_line_numbers:
self.lines.append(line)
else:
# Only expand leading tabs.
self.lines.append(_get_indentation(line).expandtabs() +
_remove_leading_and_normalize(line))
self.lines.insert(0, None)
self.index = 1 # index into self.lines of next line
self.input_text = input_text
def run(self, indent_size=DEFAULT_INDENT_SIZE):
"""Fix indentation and return modified line numbers.
Line numbers are indexed at 1.
"""
if indent_size < 1:
return self.input_text
try:
stats = _reindent_stats(tokenize.generate_tokens(self.getline))
except (SyntaxError, tokenize.TokenError):
return self.input_text
# Remove trailing empty lines.
lines = self.lines
# Sentinel.
stats.append((len(lines), 0))
# Map count of leading spaces to # we want.
have2want = {}
# Program after transformation.
after = []
# Copy over initial empty lines -- there's nothing to do until
# we see a line with *something* on it.
i = stats[0][0]
after.extend(lines[1:i])
for i in range(len(stats) - 1):
thisstmt, thislevel = stats[i]
nextstmt = stats[i + 1][0]
have = _leading_space_count(lines[thisstmt])
want = thislevel * indent_size
if want < 0:
# A comment line.
if have:
# An indented comment line. If we saw the same
# indentation before, reuse what it most recently
# mapped to.
want = have2want.get(have, -1)
if want < 0:
# Then it probably belongs to the next real stmt.
for j in range(i + 1, len(stats) - 1):
jline, jlevel = stats[j]
if jlevel >= 0:
if have == _leading_space_count(lines[jline]):
want = jlevel * indent_size
break
# Maybe it's a hanging comment like this one,
if want < 0:
# in which case we should shift it like its base
# line got shifted.
for j in range(i - 1, -1, -1):
jline, jlevel = stats[j]
if jlevel >= 0:
want = (have + _leading_space_count(
after[jline - 1]) -
_leading_space_count(lines[jline]))
break
if want < 0:
# Still no luck -- leave it alone.
want = have
else:
want = 0
assert want >= 0
have2want[have] = want
diff = want - have
if diff == 0 or have == 0:
after.extend(lines[thisstmt:nextstmt])
else:
for line_number, line in enumerate(lines[thisstmt:nextstmt],
start=thisstmt):
if line_number in self.string_content_line_numbers:
after.append(line)
elif diff > 0:
if line == '\n':
after.append(line)
else:
after.append(' ' * diff + line)
else:
remove = min(_leading_space_count(line), -diff)
after.append(line[remove:])
return ''.join(after)
def getline(self):
"""Line-getter for tokenize."""
if self.index >= len(self.lines):
line = ''
else:
line = self.lines[self.index]
self.index += 1
return line
def _reindent_stats(tokens):
"""Return list of (lineno, indentlevel) pairs.
One for each stmt and comment line. indentlevel is -1 for comment
lines, as a signal that tokenize doesn't know what to do about them;
indeed, they're our headache!
"""
find_stmt = 1 # Next token begins a fresh stmt?
level = 0 # Current indent level.
stats = []
for t in tokens:
token_type = t[0]
sline = t[2][0]
line = t[4]
if token_type == tokenize.NEWLINE:
# A program statement, or ENDMARKER, will eventually follow,
# after some (possibly empty) run of tokens of the form
# (NL | COMMENT)* (INDENT | DEDENT+)?
find_stmt = 1
elif token_type == tokenize.INDENT:
find_stmt = 1
level += 1
elif token_type == tokenize.DEDENT:
find_stmt = 1
level -= 1
elif token_type == tokenize.COMMENT:
if find_stmt:
stats.append((sline, -1))
# But we're still looking for a new stmt, so leave
# find_stmt alone.
elif token_type == tokenize.NL:
pass
elif find_stmt:
# This is the first "real token" following a NEWLINE, so it
# must be the first token of the next program statement, or an
# ENDMARKER.
find_stmt = 0
if line: # Not endmarker.
stats.append((sline, level))
return stats
def _leading_space_count(line):
"""Return number of leading spaces in line."""
i = 0
while i < len(line) and line[i] == ' ':
i += 1
return i
def refactor_with_2to3(source_text, fixer_names, filename=''):
"""Use lib2to3 to refactor the source.
Return the refactored source code.
"""
from lib2to3.refactor import RefactoringTool
fixers = ['lib2to3.fixes.fix_' + name for name in fixer_names]
tool = RefactoringTool(fixer_names=fixers, explicit=fixers)
from lib2to3.pgen2 import tokenize as lib2to3_tokenize
try:
# The name parameter is necessary particularly for the "import" fixer.
return unicode(tool.refactor_string(source_text, name=filename))
except lib2to3_tokenize.TokenError:
return source_text
def check_syntax(code):
"""Return True if syntax is okay."""
try:
return compile(code, '<string>', 'exec', dont_inherit=True)
except (SyntaxError, TypeError, ValueError):
return False
def find_with_line_numbers(pattern, contents):
"""A wrapper around 're.finditer' to find line numbers.
Returns a list of line numbers where pattern was found in contents.
"""
matches = list(re.finditer(pattern, contents))
if not matches:
return []
end = matches[-1].start()
# -1 so a failed `rfind` maps to the first line.
newline_offsets = {
-1: 0
}
for line_num, m in enumerate(re.finditer(r'\n', contents), 1):
offset = m.start()
if offset > end:
break
newline_offsets[offset] = line_num
def get_line_num(match, contents):
"""Get the line number of string in a files contents.
Failing to find the newline is OK, -1 maps to 0
"""
newline_offset = contents.rfind('\n', 0, match.start())
return newline_offsets[newline_offset]
return [get_line_num(match, contents) + 1 for match in matches]
def get_disabled_ranges(source):
"""Returns a list of tuples representing the disabled ranges.
If disabled and no re-enable will disable for rest of file.
"""
enable_line_nums = find_with_line_numbers(ENABLE_REGEX, source)
disable_line_nums = find_with_line_numbers(DISABLE_REGEX, source)
total_lines = len(re.findall("\n", source)) + 1
enable_commands = {}
for num in enable_line_nums:
enable_commands[num] = True
for num in disable_line_nums:
enable_commands[num] = False
disabled_ranges = []
currently_enabled = True
disabled_start = None
for line, commanded_enabled in sorted(enable_commands.items()):
if currently_enabled is True and commanded_enabled is False:
disabled_start = line
currently_enabled = False
elif currently_enabled is False and commanded_enabled is True:
disabled_ranges.append((disabled_start, line))
currently_enabled = True
if currently_enabled is False:
disabled_ranges.append((disabled_start, total_lines))
return disabled_ranges
def filter_results(source, results, aggressive):
"""Filter out spurious reports from pycodestyle.
If aggressive is True, we allow possibly unsafe fixes (E711, E712).
"""
non_docstring_string_line_numbers = multiline_string_lines(
source, include_docstrings=False)
all_string_line_numbers = multiline_string_lines(
source, include_docstrings=True)
commented_out_code_line_numbers = commented_out_code_lines(source)
# Filter out the disabled ranges
disabled_ranges = get_disabled_ranges(source)
if len(disabled_ranges) > 0:
results = [result for result in results
if any(result['line'] not in range(*disabled_range)
for disabled_range in disabled_ranges)
]
has_e901 = any(result['id'].lower() == 'e901' for result in results)
for r in results:
issue_id = r['id'].lower()
if r['line'] in non_docstring_string_line_numbers:
if issue_id.startswith(('e1', 'e501', 'w191')):
continue
if r['line'] in all_string_line_numbers:
if issue_id in ['e501']:
continue
# We must offset by 1 for lines that contain the trailing contents of
# multiline strings.
if not aggressive and (r['line'] + 1) in all_string_line_numbers:
# Do not modify multiline strings in non-aggressive mode. Remove
# trailing whitespace could break doctests.
if issue_id.startswith(('w29', 'w39')):
continue
if aggressive <= 0:
if issue_id.startswith(('e711', 'e72', 'w6')):
continue
if aggressive <= 1:
if issue_id.startswith(('e712', 'e713', 'e714')):
continue
if aggressive <= 2:
if issue_id.startswith(('e704')):
continue
if r['line'] in commented_out_code_line_numbers:
if issue_id.startswith(('e26', 'e501')):
continue
# Do not touch indentation if there is a token error caused by
# incomplete multi-line statement. Otherwise, we risk screwing up the
# indentation.
if has_e901:
if issue_id.startswith(('e1', 'e7')):
continue
yield r
def multiline_string_lines(source, include_docstrings=False):
"""Return line numbers that are within multiline strings.
The line numbers are indexed at 1.
Docstrings are ignored.
"""
line_numbers = set()
previous_token_type = ''
try:
for t in generate_tokens(source):
token_type = t[0]
start_row = t[2][0]
end_row = t[3][0]
if token_type == tokenize.STRING and start_row != end_row:
if (
include_docstrings or
previous_token_type != tokenize.INDENT
):
# We increment by one since we want the contents of the
# string.
line_numbers |= set(range(1 + start_row, 1 + end_row))
previous_token_type = token_type
except (SyntaxError, tokenize.TokenError):
pass
return line_numbers
def commented_out_code_lines(source):
"""Return line numbers of comments that are likely code.
Commented-out code is bad practice, but modifying it just adds even
more clutter.
"""
line_numbers = []
try:
for t in generate_tokens(source):
token_type = t[0]
token_string = t[1]
start_row = t[2][0]
line = t[4]
# Ignore inline comments.
if not line.lstrip().startswith('#'):
continue
if token_type == tokenize.COMMENT:
stripped_line = token_string.lstrip('#').strip()
with warnings.catch_warnings():
# ignore SyntaxWarning in Python3.8+
# refs:
# https://bugs.python.org/issue15248
# https://docs.python.org/3.8/whatsnew/3.8.html#other-language-changes
warnings.filterwarnings("ignore", category=SyntaxWarning)
if (
' ' in stripped_line and
'#' not in stripped_line and
check_syntax(stripped_line)
):
line_numbers.append(start_row)
except (SyntaxError, tokenize.TokenError):
pass
return line_numbers
def shorten_comment(line, max_line_length, last_comment=False):
"""Return trimmed or split long comment line.
If there are no comments immediately following it, do a text wrap.
Doing this wrapping on all comments in general would lead to jagged
comment text.
"""
assert len(line) > max_line_length
line = line.rstrip()
# PEP 8 recommends 72 characters for comment text.
indentation = _get_indentation(line) + '# '
max_line_length = min(max_line_length,
len(indentation) + 72)
MIN_CHARACTER_REPEAT = 5
if (
len(line) - len(line.rstrip(line[-1])) >= MIN_CHARACTER_REPEAT and
not line[-1].isalnum()
):
# Trim comments that end with things like ---------
return line[:max_line_length] + '\n'
elif last_comment and re.match(r'\s*#+\s*\w+', line):
split_lines = textwrap.wrap(line.lstrip(' \t#'),
initial_indent=indentation,
subsequent_indent=indentation,
width=max_line_length,
break_long_words=False,
break_on_hyphens=False)
return '\n'.join(split_lines) + '\n'
return line + '\n'
def normalize_line_endings(lines, newline):
"""Return fixed line endings.
All lines will be modified to use the most common line ending.
"""
return [line.rstrip('\n\r') + newline for line in lines]
def mutual_startswith(a, b):
return b.startswith(a) or a.startswith(b)
def code_match(code, select, ignore):
if ignore:
assert not isinstance(ignore, unicode)
for ignored_code in [c.strip() for c in ignore]:
if mutual_startswith(code.lower(), ignored_code.lower()):
return False
if select:
assert not isinstance(select, unicode)
for selected_code in [c.strip() for c in select]:
if mutual_startswith(code.lower(), selected_code.lower()):
return True
return False
return True
def fix_code(source, options=None, encoding=None, apply_config=False):
"""Return fixed source code.
"encoding" will be used to decode "source" if it is a byte string.
"""
options = _get_options(options, apply_config)
if not isinstance(source, unicode):
source = source.decode(encoding or get_encoding())
sio = io.StringIO(source)
return fix_lines(sio.readlines(), options=options)
def _get_options(raw_options, apply_config):
"""Return parsed options."""
if not raw_options:
return parse_args([''], apply_config=apply_config)
if isinstance(raw_options, dict):
options = parse_args([''], apply_config=apply_config)
for name, value in raw_options.items():
if not hasattr(options, name):
raise ValueError("No such option '{}'".format(name))
# Check for very basic type errors.
expected_type = type(getattr(options, name))
if not isinstance(expected_type, (str, unicode)):
if isinstance(value, (str, unicode)):
raise ValueError(
"Option '{}' should not be a string".format(name))
setattr(options, name, value)
else:
options = raw_options
return options
def fix_lines(source_lines, options, filename=''):
"""Return fixed source code."""
# Transform everything to line feed. Then change them back to original
# before returning fixed source code.
original_newline = find_newline(source_lines)
tmp_source = ''.join(normalize_line_endings(source_lines, '\n'))
# Keep a history to break out of cycles.
previous_hashes = set()
if options.line_range:
# Disable "apply_local_fixes()" for now due to issue #175.
fixed_source = tmp_source
else:
pep8_options = {
'ignore': options.ignore,
'select': options.select,
'max_line_length': options.max_line_length,
'hang_closing': options.hang_closing,
}
sio = io.StringIO(tmp_source)
contents = sio.readlines()
results = _execute_pep8(pep8_options, contents)
codes = {result['id'] for result in results
if result['id'] in SELECTED_GLOBAL_FIXED_METHOD_CODES}
# Apply global fixes only once (for efficiency).
fixed_source = apply_global_fixes(tmp_source,
options,
filename=filename,
codes=codes)
passes = 0
long_line_ignore_cache = set()
while hash(fixed_source) not in previous_hashes:
if options.pep8_passes >= 0 and passes > options.pep8_passes:
break
passes += 1
previous_hashes.add(hash(fixed_source))
tmp_source = copy.copy(fixed_source)
fix = FixPEP8(
filename,
options,
contents=tmp_source,
long_line_ignore_cache=long_line_ignore_cache)
fixed_source = fix.fix()
sio = io.StringIO(fixed_source)
return ''.join(normalize_line_endings(sio.readlines(), original_newline))
def fix_file(filename, options=None, output=None, apply_config=False):
if not options:
options = parse_args([filename], apply_config=apply_config)
original_source = readlines_from_file(filename)
fixed_source = original_source
if options.in_place or options.diff or output:
encoding = detect_encoding(filename)
if output:
output = LineEndingWrapper(wrap_output(output, encoding=encoding))
fixed_source = fix_lines(fixed_source, options, filename=filename)
if options.diff:
new = io.StringIO(fixed_source)
new = new.readlines()
diff = get_diff_text(original_source, new, filename)
if output:
output.write(diff)
output.flush()
elif options.jobs > 1:
diff = diff.encode(encoding)
return diff
elif options.in_place:
original = "".join(original_source).splitlines()
fixed = fixed_source.splitlines()
original_source_last_line = (
original_source[-1].split("\n")[-1] if original_source else ""
)
fixed_source_last_line = fixed_source.split("\n")[-1]
if original != fixed or (
original_source_last_line != fixed_source_last_line
):
with open_with_encoding(filename, 'w', encoding=encoding) as fp:
fp.write(fixed_source)
return fixed_source
return None
else:
if output:
output.write(fixed_source)
output.flush()
return fixed_source
def global_fixes():
"""Yield multiple (code, function) tuples."""
for function in list(globals().values()):
if inspect.isfunction(function):
arguments = _get_parameters(function)
if arguments[:1] != ['source']:
continue
code = extract_code_from_function(function)
if code:
yield (code, function)
def _get_parameters(function):
# pylint: disable=deprecated-method
if sys.version_info.major >= 3:
# We need to match "getargspec()", which includes "self" as the first
# value for methods.
# https://bugs.python.org/issue17481#msg209469
if inspect.ismethod(function):
function = function.__func__
return list(inspect.signature(function).parameters)
else:
return inspect.getargspec(function)[0]
def apply_global_fixes(source, options, where='global', filename='',
codes=None):
"""Run global fixes on source code.
These are fixes that only need be done once (unlike those in
FixPEP8, which are dependent on pycodestyle).
"""
if codes is None:
codes = []
if any(code_match(code, select=options.select, ignore=options.ignore)
for code in ['E101', 'E111']):
source = reindent(source,
indent_size=options.indent_size)
for (code, function) in global_fixes():
if code.upper() in SELECTED_GLOBAL_FIXED_METHOD_CODES \
and code.upper() not in codes:
continue
if code_match(code, select=options.select, ignore=options.ignore):
if options.verbose:
print('---> Applying {} fix for {}'.format(where,
code.upper()),
file=sys.stderr)
source = function(source,
aggressive=options.aggressive)
source = fix_2to3(source,
aggressive=options.aggressive,
select=options.select,
ignore=options.ignore,
filename=filename,
where=where,
verbose=options.verbose)
return source
def extract_code_from_function(function):
"""Return code handled by function."""
if not function.__name__.startswith('fix_'):
return None
code = re.sub('^fix_', '', function.__name__)
if not code:
return None
try:
int(code[1:])
except ValueError:
return None
return code
def _get_package_version():
packages = ["pycodestyle: {}".format(pycodestyle.__version__)]
return ", ".join(packages)
def create_parser():
"""Return command-line parser."""
parser = argparse.ArgumentParser(description=docstring_summary(__doc__),
prog='autopep8')
parser.add_argument('--version', action='version',
version='%(prog)s {} ({})'.format(
__version__, _get_package_version()))
parser.add_argument('-v', '--verbose', action='count',
default=0,
help='print verbose messages; '
'multiple -v result in more verbose messages')
parser.add_argument('-d', '--diff', action='store_true',
help='print the diff for the fixed source')
parser.add_argument('-i', '--in-place', action='store_true',
help='make changes to files in place')
parser.add_argument('--global-config', metavar='filename',
default=DEFAULT_CONFIG,
help='path to a global pep8 config file; if this file '
'does not exist then this is ignored '
'(default: {})'.format(DEFAULT_CONFIG))
parser.add_argument('--ignore-local-config', action='store_true',
help="don't look for and apply local config files; "
'if not passed, defaults are updated with any '
"config files in the project's root directory")
parser.add_argument('-r', '--recursive', action='store_true',
help='run recursively over directories; '
'must be used with --in-place or --diff')
parser.add_argument('-j', '--jobs', type=int, metavar='n', default=1,
help='number of parallel jobs; '
'match CPU count if value is less than 1')
parser.add_argument('-p', '--pep8-passes', metavar='n',
default=-1, type=int,
help='maximum number of additional pep8 passes '
'(default: infinite)')
parser.add_argument('-a', '--aggressive', action='count', default=0,
help='enable non-whitespace changes; '
'multiple -a result in more aggressive changes')
parser.add_argument('--experimental', action='store_true',
help='enable experimental fixes')
parser.add_argument('--exclude', metavar='globs',
help='exclude file/directory names that match these '
'comma-separated globs')
parser.add_argument('--list-fixes', action='store_true',
help='list codes for fixes; '
'used by --ignore and --select')
parser.add_argument('--ignore', metavar='errors', default='',
help='do not fix these errors/warnings '
'(default: {})'.format(DEFAULT_IGNORE))
parser.add_argument('--select', metavar='errors', default='',
help='fix only these errors/warnings (e.g. E4,W)')
parser.add_argument('--max-line-length', metavar='n', default=79, type=int,
help='set maximum allowed line length '
'(default: %(default)s)')
parser.add_argument('--line-range', '--range', metavar='line',
default=None, type=int, nargs=2,
help='only fix errors found within this inclusive '
'range of line numbers (e.g. 1 99); '
'line numbers are indexed at 1')
parser.add_argument('--indent-size', default=DEFAULT_INDENT_SIZE,
type=int, help=argparse.SUPPRESS)
parser.add_argument('--hang-closing', action='store_true',
help='hang-closing option passed to pycodestyle')
parser.add_argument('--exit-code', action='store_true',
help='change to behavior of exit code.'
' default behavior of return value, 0 is no '
'differences, 1 is error exit. return 2 when'
' add this option. 2 is exists differences.')
parser.add_argument('files', nargs='*',
help="files to format or '-' for standard in")
return parser
def _expand_codes(codes, ignore_codes):
"""expand to individual E/W codes"""
ret = set()
is_conflict = False
if all(
any(
conflicting_code.startswith(code)
for code in codes
)
for conflicting_code in CONFLICTING_CODES
):
is_conflict = True
is_ignore_w503 = "W503" in ignore_codes
is_ignore_w504 = "W504" in ignore_codes
for code in codes:
if code == "W":
if is_ignore_w503 and is_ignore_w504:
ret.update({"W1", "W2", "W3", "W505", "W6"})
elif is_ignore_w503:
ret.update({"W1", "W2", "W3", "W504", "W505", "W6"})
else:
ret.update({"W1", "W2", "W3", "W503", "W505", "W6"})
elif code in ("W5", "W50"):
if is_ignore_w503 and is_ignore_w504:
ret.update({"W505"})
elif is_ignore_w503:
ret.update({"W504", "W505"})
else:
ret.update({"W503", "W505"})
elif not (code in ("W503", "W504") and is_conflict):
ret.add(code)
return ret
def parse_args(arguments, apply_config=False):
"""Parse command-line options."""
parser = create_parser()
args = parser.parse_args(arguments)
if not args.files and not args.list_fixes:
parser.error('incorrect number of arguments')
args.files = [decode_filename(name) for name in args.files]
if apply_config:
parser = read_config(args, parser)
# prioritize settings when exist pyproject.toml's tool.autopep8 section
try:
parser_with_pyproject_toml = read_pyproject_toml(args, parser)
except Exception:
parser_with_pyproject_toml = None
if parser_with_pyproject_toml:
parser = parser_with_pyproject_toml
args = parser.parse_args(arguments)
args.files = [decode_filename(name) for name in args.files]
if '-' in args.files:
if len(args.files) > 1:
parser.error('cannot mix stdin and regular files')
if args.diff:
parser.error('--diff cannot be used with standard input')
if args.in_place:
parser.error('--in-place cannot be used with standard input')
if args.recursive:
parser.error('--recursive cannot be used with standard input')
if len(args.files) > 1 and not (args.in_place or args.diff):
parser.error('autopep8 only takes one filename as argument '
'unless the "--in-place" or "--diff" args are '
'used')
if args.recursive and not (args.in_place or args.diff):
parser.error('--recursive must be used with --in-place or --diff')
if args.in_place and args.diff:
parser.error('--in-place and --diff are mutually exclusive')
if args.max_line_length <= 0:
parser.error('--max-line-length must be greater than 0')
if args.select:
args.select = _expand_codes(
_split_comma_separated(args.select),
(_split_comma_separated(args.ignore) if args.ignore else [])
)
if args.ignore:
args.ignore = _split_comma_separated(args.ignore)
if all(
not any(
conflicting_code.startswith(ignore_code)
for ignore_code in args.ignore
)
for conflicting_code in CONFLICTING_CODES
):
args.ignore.update(CONFLICTING_CODES)
elif not args.select:
if args.aggressive:
# Enable everything by default if aggressive.
args.select = {'E', 'W1', 'W2', 'W3', 'W6'}
else:
args.ignore = _split_comma_separated(DEFAULT_IGNORE)
if args.exclude:
args.exclude = _split_comma_separated(args.exclude)
else:
args.exclude = {}
if args.jobs < 1:
# Do not import multiprocessing globally in case it is not supported
# on the platform.
import multiprocessing
args.jobs = multiprocessing.cpu_count()
if args.jobs > 1 and not (args.in_place or args.diff):
parser.error('parallel jobs requires --in-place')
if args.line_range:
if args.line_range[0] <= 0:
parser.error('--range must be positive numbers')
if args.line_range[0] > args.line_range[1]:
parser.error('First value of --range should be less than or equal '
'to the second')
return args
def _get_normalize_options(config, section, option_list):
for (k, _) in config.items(section):
norm_opt = k.lstrip('-').replace('-', '_')
if not option_list.get(norm_opt):
continue
opt_type = option_list[norm_opt]
if opt_type is int:
value = config.getint(section, k)
elif opt_type is bool:
value = config.getboolean(section, k)
else:
value = config.get(section, k)
yield norm_opt, k, value
def read_config(args, parser):
"""Read both user configuration and local configuration."""
config = SafeConfigParser()
try:
config.read(args.global_config)
if not args.ignore_local_config:
parent = tail = args.files and os.path.abspath(
os.path.commonprefix(args.files))
while tail:
if config.read([os.path.join(parent, fn)
for fn in PROJECT_CONFIG]):
break
(parent, tail) = os.path.split(parent)
defaults = {}
option_list = {o.dest: o.type or type(o.default)
for o in parser._actions}
for section in ['pep8', 'pycodestyle', 'flake8']:
if not config.has_section(section):
continue
for norm_opt, k, value in _get_normalize_options(config, section,
option_list):
if args.verbose:
print("enable config: section={}, key={}, value={}".format(
section, k, value))
defaults[norm_opt] = value
parser.set_defaults(**defaults)
except Error:
# Ignore for now.
pass
return parser
def read_pyproject_toml(args, parser):
"""Read pyproject.toml and load configuration."""
import toml
config = None
if os.path.exists(args.global_config):
with open(args.global_config) as fp:
config = toml.load(fp)
if not args.ignore_local_config:
parent = tail = args.files and os.path.abspath(
os.path.commonprefix(args.files))
while tail:
pyproject_toml = os.path.join(parent, "pyproject.toml")
if os.path.exists(pyproject_toml):
with open(pyproject_toml) as fp:
config = toml.load(fp)
break
(parent, tail) = os.path.split(parent)
if not config:
return None
if config.get("tool", {}).get("autopep8") is None:
return None
config = config.get("tool").get("autopep8")
defaults = {}
option_list = {o.dest: o.type or type(o.default)
for o in parser._actions}
TUPLED_OPTIONS = ("ignore", "select")
for (k, v) in config.items():
norm_opt = k.lstrip('-').replace('-', '_')
if not option_list.get(norm_opt):
continue
if type(v) in (list, tuple) and norm_opt in TUPLED_OPTIONS:
value = ",".join(v)
else:
value = v
if args.verbose:
print("enable pyproject.toml config: "
"key={}, value={}".format(k, value))
defaults[norm_opt] = value
if defaults:
# set value when exists key-value in defaults dict
parser.set_defaults(**defaults)
return parser
def _split_comma_separated(string):
"""Return a set of strings."""
return {text.strip() for text in string.split(',') if text.strip()}
def decode_filename(filename):
"""Return Unicode filename."""
if isinstance(filename, unicode):
return filename
return filename.decode(sys.getfilesystemencoding())
def supported_fixes():
"""Yield pep8 error codes that autopep8 fixes.
Each item we yield is a tuple of the code followed by its
description.
"""
yield ('E101', docstring_summary(reindent.__doc__))
instance = FixPEP8(filename=None, options=None, contents='')
for attribute in dir(instance):
code = re.match('fix_([ew][0-9][0-9][0-9])', attribute)
if code:
yield (
code.group(1).upper(),
re.sub(r'\s+', ' ',
docstring_summary(getattr(instance, attribute).__doc__))
)
for (code, function) in sorted(global_fixes()):
yield (code.upper() + (4 - len(code)) * ' ',
re.sub(r'\s+', ' ', docstring_summary(function.__doc__)))
for code in sorted(CODE_TO_2TO3):
yield (code.upper() + (4 - len(code)) * ' ',
re.sub(r'\s+', ' ', docstring_summary(fix_2to3.__doc__)))
def docstring_summary(docstring):
"""Return summary of docstring."""
return docstring.split('\n')[0] if docstring else ''
def line_shortening_rank(candidate, indent_word, max_line_length,
experimental=False):
"""Return rank of candidate.
This is for sorting candidates.
"""
if not candidate.strip():
return 0
rank = 0
lines = candidate.rstrip().split('\n')
offset = 0
if (
not lines[0].lstrip().startswith('#') and
lines[0].rstrip()[-1] not in '([{'
):
for (opening, closing) in ('()', '[]', '{}'):
# Don't penalize empty containers that aren't split up. Things like
# this "foo(\n )" aren't particularly good.
opening_loc = lines[0].find(opening)
closing_loc = lines[0].find(closing)
if opening_loc >= 0:
if closing_loc < 0 or closing_loc != opening_loc + 1:
offset = max(offset, 1 + opening_loc)
current_longest = max(offset + len(x.strip()) for x in lines)
rank += 4 * max(0, current_longest - max_line_length)
rank += len(lines)
# Too much variation in line length is ugly.
rank += 2 * standard_deviation(len(line) for line in lines)
bad_staring_symbol = {
'(': ')',
'[': ']',
'{': '}'}.get(lines[0][-1])
if len(lines) > 1:
if (
bad_staring_symbol and
lines[1].lstrip().startswith(bad_staring_symbol)
):
rank += 20
for lineno, current_line in enumerate(lines):
current_line = current_line.strip()
if current_line.startswith('#'):
continue
for bad_start in ['.', '%', '+', '-', '/']:
if current_line.startswith(bad_start):
rank += 100
# Do not tolerate operators on their own line.
if current_line == bad_start:
rank += 1000
if (
current_line.endswith(('.', '%', '+', '-', '/')) and
"': " in current_line
):
rank += 1000
if current_line.endswith(('(', '[', '{', '.')):
# Avoid lonely opening. They result in longer lines.
if len(current_line) <= len(indent_word):
rank += 100
# Avoid the ugliness of ", (\n".
if (
current_line.endswith('(') and
current_line[:-1].rstrip().endswith(',')
):
rank += 100
# Avoid the ugliness of "something[\n" and something[index][\n.
if (
current_line.endswith('[') and
len(current_line) > 1 and
(current_line[-2].isalnum() or current_line[-2] in ']')
):
rank += 300
# Also avoid the ugliness of "foo.\nbar"
if current_line.endswith('.'):
rank += 100
if has_arithmetic_operator(current_line):
rank += 100
# Avoid breaking at unary operators.
if re.match(r'.*[(\[{]\s*[\-\+~]$', current_line.rstrip('\\ ')):
rank += 1000
if re.match(r'.*lambda\s*\*$', current_line.rstrip('\\ ')):
rank += 1000
if current_line.endswith(('%', '(', '[', '{')):
rank -= 20
# Try to break list comprehensions at the "for".
if current_line.startswith('for '):
rank -= 50
if current_line.endswith('\\'):
# If a line ends in \-newline, it may be part of a
# multiline string. In that case, we would like to know
# how long that line is without the \-newline. If it's
# longer than the maximum, or has comments, then we assume
# that the \-newline is an okay candidate and only
# penalize it a bit.
total_len = len(current_line)
lineno += 1
while lineno < len(lines):
total_len += len(lines[lineno])
if lines[lineno].lstrip().startswith('#'):
total_len = max_line_length
break
if not lines[lineno].endswith('\\'):
break
lineno += 1
if total_len < max_line_length:
rank += 10
else:
rank += 100 if experimental else 1
# Prefer breaking at commas rather than colon.
if ',' in current_line and current_line.endswith(':'):
rank += 10
# Avoid splitting dictionaries between key and value.
if current_line.endswith(':'):
rank += 100
rank += 10 * count_unbalanced_brackets(current_line)
return max(0, rank)
def standard_deviation(numbers):
"""Return standard deviation."""
numbers = list(numbers)
if not numbers:
return 0
mean = sum(numbers) / len(numbers)
return (sum((n - mean) ** 2 for n in numbers) /
len(numbers)) ** .5
def has_arithmetic_operator(line):
"""Return True if line contains any arithmetic operators."""
for operator in pycodestyle.ARITHMETIC_OP:
if operator in line:
return True
return False
def count_unbalanced_brackets(line):
"""Return number of unmatched open/close brackets."""
count = 0
for opening, closing in ['()', '[]', '{}']:
count += abs(line.count(opening) - line.count(closing))
return count
def split_at_offsets(line, offsets):
"""Split line at offsets.
Return list of strings.
"""
result = []
previous_offset = 0
current_offset = 0
for current_offset in sorted(offsets):
if current_offset < len(line) and previous_offset != current_offset:
result.append(line[previous_offset:current_offset].strip())
previous_offset = current_offset
result.append(line[current_offset:])
return result
class LineEndingWrapper(object):
r"""Replace line endings to work with sys.stdout.
It seems that sys.stdout expects only '\n' as the line ending, no matter
the platform. Otherwise, we get repeated line endings.
"""
def __init__(self, output):
self.__output = output
def write(self, s):
self.__output.write(s.replace('\r\n', '\n').replace('\r', '\n'))
def flush(self):
self.__output.flush()
def match_file(filename, exclude):
"""Return True if file is okay for modifying/recursing."""
base_name = os.path.basename(filename)
if base_name.startswith('.'):
return False
for pattern in exclude:
if fnmatch.fnmatch(base_name, pattern):
return False
if fnmatch.fnmatch(filename, pattern):
return False
if not os.path.isdir(filename) and not is_python_file(filename):
return False
return True
def find_files(filenames, recursive, exclude):
"""Yield filenames."""
while filenames:
name = filenames.pop(0)
if recursive and os.path.isdir(name):
for root, directories, children in os.walk(name):
filenames += [os.path.join(root, f) for f in children
if match_file(os.path.join(root, f),
exclude)]
directories[:] = [d for d in directories
if match_file(os.path.join(root, d),
exclude)]
else:
is_exclude_match = False
for pattern in exclude:
if fnmatch.fnmatch(name, pattern):
is_exclude_match = True
break
if not is_exclude_match:
yield name
def _fix_file(parameters):
"""Helper function for optionally running fix_file() in parallel."""
if parameters[1].verbose:
print('[file:{}]'.format(parameters[0]), file=sys.stderr)
try:
return fix_file(*parameters)
except IOError as error:
print(unicode(error), file=sys.stderr)
def fix_multiple_files(filenames, options, output=None):
"""Fix list of files.
Optionally fix files recursively.
"""
results = []
filenames = find_files(filenames, options.recursive, options.exclude)
if options.jobs > 1:
import multiprocessing
pool = multiprocessing.Pool(options.jobs)
ret = pool.map(_fix_file, [(name, options) for name in filenames])
if options.diff:
for r in ret:
sys.stdout.write(r.decode())
sys.stdout.flush()
results.extend([x for x in ret if x is not None])
else:
for name in filenames:
ret = _fix_file((name, options, output))
if ret is None:
continue
if options.diff:
if ret != '':
results.append(ret)
elif options.in_place:
results.append(ret)
else:
original_source = readlines_from_file(name)
if "".join(original_source).splitlines() != ret.splitlines():
results.append(ret)
return results
def is_python_file(filename):
"""Return True if filename is Python file."""
if filename.endswith('.py'):
return True
try:
with open_with_encoding(
filename,
limit_byte_check=MAX_PYTHON_FILE_DETECTION_BYTES) as f:
text = f.read(MAX_PYTHON_FILE_DETECTION_BYTES)
if not text:
return False
first_line = text.splitlines()[0]
except (IOError, IndexError):
return False
if not PYTHON_SHEBANG_REGEX.match(first_line):
return False
return True
def is_probably_part_of_multiline(line):
"""Return True if line is likely part of a multiline string.
When multiline strings are involved, pep8 reports the error as being
at the start of the multiline string, which doesn't work for us.
"""
return (
'"""' in line or
"'''" in line or
line.rstrip().endswith('\\')
)
def wrap_output(output, encoding):
"""Return output with specified encoding."""
return codecs.getwriter(encoding)(output.buffer
if hasattr(output, 'buffer')
else output)
def get_encoding():
"""Return preferred encoding."""
return locale.getpreferredencoding() or sys.getdefaultencoding()
def main(argv=None, apply_config=True):
"""Command-line entry."""
if argv is None:
argv = sys.argv
try:
# Exit on broken pipe.
signal.signal(signal.SIGPIPE, signal.SIG_DFL)
except AttributeError: # pragma: no cover
# SIGPIPE is not available on Windows.
pass
try:
args = parse_args(argv[1:], apply_config=apply_config)
if args.list_fixes:
for code, description in sorted(supported_fixes()):
print('{code} - {description}'.format(
code=code, description=description))
return EXIT_CODE_OK
if args.files == ['-']:
assert not args.in_place
encoding = sys.stdin.encoding or get_encoding()
read_stdin = sys.stdin.read()
fixed_stdin = fix_code(read_stdin, args, encoding=encoding)
# LineEndingWrapper is unnecessary here due to the symmetry between
# standard in and standard out.
wrap_output(sys.stdout, encoding=encoding).write(fixed_stdin)
if hash(read_stdin) != hash(fixed_stdin):
if args.exit_code:
return EXIT_CODE_EXISTS_DIFF
else:
if args.in_place or args.diff:
args.files = list(set(args.files))
else:
assert len(args.files) == 1
assert not args.recursive
results = fix_multiple_files(args.files, args, sys.stdout)
if args.diff:
ret = any([len(ret) != 0 for ret in results])
else:
# with in-place option
ret = any([ret is not None for ret in results])
if args.exit_code and ret:
return EXIT_CODE_EXISTS_DIFF
except KeyboardInterrupt:
return EXIT_CODE_ERROR # pragma: no cover
class CachedTokenizer(object):
"""A one-element cache around tokenize.generate_tokens().
Original code written by Ned Batchelder, in coverage.py.
"""
def __init__(self):
self.last_text = None
self.last_tokens = None
def generate_tokens(self, text):
"""A stand-in for tokenize.generate_tokens()."""
if text != self.last_text:
string_io = io.StringIO(text)
self.last_tokens = list(
tokenize.generate_tokens(string_io.readline)
)
self.last_text = text
return self.last_tokens
_cached_tokenizer = CachedTokenizer()
generate_tokens = _cached_tokenizer.generate_tokens
if __name__ == '__main__':
sys.exit(main())
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/flask/logging.py
|
# -*- coding: utf-8 -*-
"""
flask.logging
~~~~~~~~~~~~~
:copyright: 2010 Pallets
:license: BSD-3-Clause
"""
from __future__ import absolute_import
import logging
import sys
import warnings
from werkzeug.local import LocalProxy
from .globals import request
@LocalProxy
def wsgi_errors_stream():
"""Find the most appropriate error stream for the application. If a request
is active, log to ``wsgi.errors``, otherwise use ``sys.stderr``.
If you configure your own :class:`logging.StreamHandler`, you may want to
use this for the stream. If you are using file or dict configuration and
can't import this directly, you can refer to it as
``ext://flask.logging.wsgi_errors_stream``.
"""
return request.environ["wsgi.errors"] if request else sys.stderr
def has_level_handler(logger):
"""Check if there is a handler in the logging chain that will handle the
given logger's :meth:`effective level <~logging.Logger.getEffectiveLevel>`.
"""
level = logger.getEffectiveLevel()
current = logger
while current:
if any(handler.level <= level for handler in current.handlers):
return True
if not current.propagate:
break
current = current.parent
return False
#: Log messages to :func:`~flask.logging.wsgi_errors_stream` with the format
#: ``[%(asctime)s] %(levelname)s in %(module)s: %(message)s``.
default_handler = logging.StreamHandler(wsgi_errors_stream)
default_handler.setFormatter(
logging.Formatter("[%(asctime)s] %(levelname)s in %(module)s: %(message)s")
)
def _has_config(logger):
"""Decide if a logger has direct configuration applied by checking
its properties against the defaults.
:param logger: The :class:`~logging.Logger` to inspect.
"""
return (
logger.level != logging.NOTSET
or logger.handlers
or logger.filters
or not logger.propagate
)
def create_logger(app):
"""Get the the Flask apps's logger and configure it if needed.
The logger name will be the same as
:attr:`app.import_name <flask.Flask.name>`.
When :attr:`~flask.Flask.debug` is enabled, set the logger level to
:data:`logging.DEBUG` if it is not set.
If there is no handler for the logger's effective level, add a
:class:`~logging.StreamHandler` for
:func:`~flask.logging.wsgi_errors_stream` with a basic format.
"""
logger = logging.getLogger(app.name)
# 1.1.0 changes name of logger, warn if config is detected for old
# name and not new name
for old_name in ("flask.app", "flask"):
old_logger = logging.getLogger(old_name)
if _has_config(old_logger) and not _has_config(logger):
warnings.warn(
"'app.logger' is named '{name}' for this application,"
" but configuration was found for '{old_name}', which"
" no longer has an effect. The logging configuration"
" should be moved to '{name}'.".format(name=app.name, old_name=old_name)
)
break
if app.debug and not logger.level:
logger.setLevel(logging.DEBUG)
if not has_level_handler(logger):
logger.addHandler(default_handler)
return logger
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/flask/signals.py
|
# -*- coding: utf-8 -*-
"""
flask.signals
~~~~~~~~~~~~~
Implements signals based on blinker if available, otherwise
falls silently back to a noop.
:copyright: 2010 Pallets
:license: BSD-3-Clause
"""
try:
from blinker import Namespace
signals_available = True
except ImportError:
signals_available = False
class Namespace(object):
def signal(self, name, doc=None):
return _FakeSignal(name, doc)
class _FakeSignal(object):
"""If blinker is unavailable, create a fake class with the same
interface that allows sending of signals but will fail with an
error on anything else. Instead of doing anything on send, it
will just ignore the arguments and do nothing instead.
"""
def __init__(self, name, doc=None):
self.name = name
self.__doc__ = doc
def send(self, *args, **kwargs):
pass
def _fail(self, *args, **kwargs):
raise RuntimeError(
"Signalling support is unavailable because the blinker"
" library is not installed."
)
connect = connect_via = connected_to = temporarily_connected_to = _fail
disconnect = _fail
has_receivers_for = receivers_for = _fail
del _fail
# The namespace for code signals. If you are not Flask code, do
# not put signals in here. Create your own namespace instead.
_signals = Namespace()
# Core signals. For usage examples grep the source code or consult
# the API documentation in docs/api.rst as well as docs/signals.rst
template_rendered = _signals.signal("template-rendered")
before_render_template = _signals.signal("before-render-template")
request_started = _signals.signal("request-started")
request_finished = _signals.signal("request-finished")
request_tearing_down = _signals.signal("request-tearing-down")
got_request_exception = _signals.signal("got-request-exception")
appcontext_tearing_down = _signals.signal("appcontext-tearing-down")
appcontext_pushed = _signals.signal("appcontext-pushed")
appcontext_popped = _signals.signal("appcontext-popped")
message_flashed = _signals.signal("message-flashed")
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/flask/sessions.py
|
# -*- coding: utf-8 -*-
"""
flask.sessions
~~~~~~~~~~~~~~
Implements cookie based sessions based on itsdangerous.
:copyright: 2010 Pallets
:license: BSD-3-Clause
"""
import hashlib
import warnings
from datetime import datetime
from itsdangerous import BadSignature
from itsdangerous import URLSafeTimedSerializer
from werkzeug.datastructures import CallbackDict
from ._compat import collections_abc
from .helpers import is_ip
from .helpers import total_seconds
from .json.tag import TaggedJSONSerializer
class SessionMixin(collections_abc.MutableMapping):
"""Expands a basic dictionary with session attributes."""
@property
def permanent(self):
"""This reflects the ``'_permanent'`` key in the dict."""
return self.get("_permanent", False)
@permanent.setter
def permanent(self, value):
self["_permanent"] = bool(value)
#: Some implementations can detect whether a session is newly
#: created, but that is not guaranteed. Use with caution. The mixin
# default is hard-coded ``False``.
new = False
#: Some implementations can detect changes to the session and set
#: this when that happens. The mixin default is hard coded to
#: ``True``.
modified = True
#: Some implementations can detect when session data is read or
#: written and set this when that happens. The mixin default is hard
#: coded to ``True``.
accessed = True
class SecureCookieSession(CallbackDict, SessionMixin):
"""Base class for sessions based on signed cookies.
This session backend will set the :attr:`modified` and
:attr:`accessed` attributes. It cannot reliably track whether a
session is new (vs. empty), so :attr:`new` remains hard coded to
``False``.
"""
#: When data is changed, this is set to ``True``. Only the session
#: dictionary itself is tracked; if the session contains mutable
#: data (for example a nested dict) then this must be set to
#: ``True`` manually when modifying that data. The session cookie
#: will only be written to the response if this is ``True``.
modified = False
#: When data is read or written, this is set to ``True``. Used by
# :class:`.SecureCookieSessionInterface` to add a ``Vary: Cookie``
#: header, which allows caching proxies to cache different pages for
#: different users.
accessed = False
def __init__(self, initial=None):
def on_update(self):
self.modified = True
self.accessed = True
super(SecureCookieSession, self).__init__(initial, on_update)
def __getitem__(self, key):
self.accessed = True
return super(SecureCookieSession, self).__getitem__(key)
def get(self, key, default=None):
self.accessed = True
return super(SecureCookieSession, self).get(key, default)
def setdefault(self, key, default=None):
self.accessed = True
return super(SecureCookieSession, self).setdefault(key, default)
class NullSession(SecureCookieSession):
"""Class used to generate nicer error messages if sessions are not
available. Will still allow read-only access to the empty session
but fail on setting.
"""
def _fail(self, *args, **kwargs):
raise RuntimeError(
"The session is unavailable because no secret "
"key was set. Set the secret_key on the "
"application to something unique and secret."
)
__setitem__ = __delitem__ = clear = pop = popitem = update = setdefault = _fail
del _fail
class SessionInterface(object):
"""The basic interface you have to implement in order to replace the
default session interface which uses werkzeug's securecookie
implementation. The only methods you have to implement are
:meth:`open_session` and :meth:`save_session`, the others have
useful defaults which you don't need to change.
The session object returned by the :meth:`open_session` method has to
provide a dictionary like interface plus the properties and methods
from the :class:`SessionMixin`. We recommend just subclassing a dict
and adding that mixin::
class Session(dict, SessionMixin):
pass
If :meth:`open_session` returns ``None`` Flask will call into
:meth:`make_null_session` to create a session that acts as replacement
if the session support cannot work because some requirement is not
fulfilled. The default :class:`NullSession` class that is created
will complain that the secret key was not set.
To replace the session interface on an application all you have to do
is to assign :attr:`flask.Flask.session_interface`::
app = Flask(__name__)
app.session_interface = MySessionInterface()
.. versionadded:: 0.8
"""
#: :meth:`make_null_session` will look here for the class that should
#: be created when a null session is requested. Likewise the
#: :meth:`is_null_session` method will perform a typecheck against
#: this type.
null_session_class = NullSession
#: A flag that indicates if the session interface is pickle based.
#: This can be used by Flask extensions to make a decision in regards
#: to how to deal with the session object.
#:
#: .. versionadded:: 0.10
pickle_based = False
def make_null_session(self, app):
"""Creates a null session which acts as a replacement object if the
real session support could not be loaded due to a configuration
error. This mainly aids the user experience because the job of the
null session is to still support lookup without complaining but
modifications are answered with a helpful error message of what
failed.
This creates an instance of :attr:`null_session_class` by default.
"""
return self.null_session_class()
def is_null_session(self, obj):
"""Checks if a given object is a null session. Null sessions are
not asked to be saved.
This checks if the object is an instance of :attr:`null_session_class`
by default.
"""
return isinstance(obj, self.null_session_class)
def get_cookie_domain(self, app):
"""Returns the domain that should be set for the session cookie.
Uses ``SESSION_COOKIE_DOMAIN`` if it is configured, otherwise
falls back to detecting the domain based on ``SERVER_NAME``.
Once detected (or if not set at all), ``SESSION_COOKIE_DOMAIN`` is
updated to avoid re-running the logic.
"""
rv = app.config["SESSION_COOKIE_DOMAIN"]
# set explicitly, or cached from SERVER_NAME detection
# if False, return None
if rv is not None:
return rv if rv else None
rv = app.config["SERVER_NAME"]
# server name not set, cache False to return none next time
if not rv:
app.config["SESSION_COOKIE_DOMAIN"] = False
return None
# chop off the port which is usually not supported by browsers
# remove any leading '.' since we'll add that later
rv = rv.rsplit(":", 1)[0].lstrip(".")
if "." not in rv:
# Chrome doesn't allow names without a '.'
# this should only come up with localhost
# hack around this by not setting the name, and show a warning
warnings.warn(
'"{rv}" is not a valid cookie domain, it must contain a ".".'
" Add an entry to your hosts file, for example"
' "{rv}.localdomain", and use that instead.'.format(rv=rv)
)
app.config["SESSION_COOKIE_DOMAIN"] = False
return None
ip = is_ip(rv)
if ip:
warnings.warn(
"The session cookie domain is an IP address. This may not work"
" as intended in some browsers. Add an entry to your hosts"
' file, for example "localhost.localdomain", and use that'
" instead."
)
# if this is not an ip and app is mounted at the root, allow subdomain
# matching by adding a '.' prefix
if self.get_cookie_path(app) == "/" and not ip:
rv = "." + rv
app.config["SESSION_COOKIE_DOMAIN"] = rv
return rv
def get_cookie_path(self, app):
"""Returns the path for which the cookie should be valid. The
default implementation uses the value from the ``SESSION_COOKIE_PATH``
config var if it's set, and falls back to ``APPLICATION_ROOT`` or
uses ``/`` if it's ``None``.
"""
return app.config["SESSION_COOKIE_PATH"] or app.config["APPLICATION_ROOT"]
def get_cookie_httponly(self, app):
"""Returns True if the session cookie should be httponly. This
currently just returns the value of the ``SESSION_COOKIE_HTTPONLY``
config var.
"""
return app.config["SESSION_COOKIE_HTTPONLY"]
def get_cookie_secure(self, app):
"""Returns True if the cookie should be secure. This currently
just returns the value of the ``SESSION_COOKIE_SECURE`` setting.
"""
return app.config["SESSION_COOKIE_SECURE"]
def get_cookie_samesite(self, app):
"""Return ``'Strict'`` or ``'Lax'`` if the cookie should use the
``SameSite`` attribute. This currently just returns the value of
the :data:`SESSION_COOKIE_SAMESITE` setting.
"""
return app.config["SESSION_COOKIE_SAMESITE"]
def get_expiration_time(self, app, session):
"""A helper method that returns an expiration date for the session
or ``None`` if the session is linked to the browser session. The
default implementation returns now + the permanent session
lifetime configured on the application.
"""
if session.permanent:
return datetime.utcnow() + app.permanent_session_lifetime
def should_set_cookie(self, app, session):
"""Used by session backends to determine if a ``Set-Cookie`` header
should be set for this session cookie for this response. If the session
has been modified, the cookie is set. If the session is permanent and
the ``SESSION_REFRESH_EACH_REQUEST`` config is true, the cookie is
always set.
This check is usually skipped if the session was deleted.
.. versionadded:: 0.11
"""
return session.modified or (
session.permanent and app.config["SESSION_REFRESH_EACH_REQUEST"]
)
def open_session(self, app, request):
"""This method has to be implemented and must either return ``None``
in case the loading failed because of a configuration error or an
instance of a session object which implements a dictionary like
interface + the methods and attributes on :class:`SessionMixin`.
"""
raise NotImplementedError()
def save_session(self, app, session, response):
"""This is called for actual sessions returned by :meth:`open_session`
at the end of the request. This is still called during a request
context so if you absolutely need access to the request you can do
that.
"""
raise NotImplementedError()
session_json_serializer = TaggedJSONSerializer()
class SecureCookieSessionInterface(SessionInterface):
"""The default session interface that stores sessions in signed cookies
through the :mod:`itsdangerous` module.
"""
#: the salt that should be applied on top of the secret key for the
#: signing of cookie based sessions.
salt = "cookie-session"
#: the hash function to use for the signature. The default is sha1
digest_method = staticmethod(hashlib.sha1)
#: the name of the itsdangerous supported key derivation. The default
#: is hmac.
key_derivation = "hmac"
#: A python serializer for the payload. The default is a compact
#: JSON derived serializer with support for some extra Python types
#: such as datetime objects or tuples.
serializer = session_json_serializer
session_class = SecureCookieSession
def get_signing_serializer(self, app):
if not app.secret_key:
return None
signer_kwargs = dict(
key_derivation=self.key_derivation, digest_method=self.digest_method
)
return URLSafeTimedSerializer(
app.secret_key,
salt=self.salt,
serializer=self.serializer,
signer_kwargs=signer_kwargs,
)
def open_session(self, app, request):
s = self.get_signing_serializer(app)
if s is None:
return None
val = request.cookies.get(app.session_cookie_name)
if not val:
return self.session_class()
max_age = total_seconds(app.permanent_session_lifetime)
try:
data = s.loads(val, max_age=max_age)
return self.session_class(data)
except BadSignature:
return self.session_class()
def save_session(self, app, session, response):
domain = self.get_cookie_domain(app)
path = self.get_cookie_path(app)
# If the session is modified to be empty, remove the cookie.
# If the session is empty, return without setting the cookie.
if not session:
if session.modified:
response.delete_cookie(
app.session_cookie_name, domain=domain, path=path
)
return
# Add a "Vary: Cookie" header if the session was accessed at all.
if session.accessed:
response.vary.add("Cookie")
if not self.should_set_cookie(app, session):
return
httponly = self.get_cookie_httponly(app)
secure = self.get_cookie_secure(app)
samesite = self.get_cookie_samesite(app)
expires = self.get_expiration_time(app, session)
val = self.get_signing_serializer(app).dumps(dict(session))
response.set_cookie(
app.session_cookie_name,
val,
expires=expires,
httponly=httponly,
domain=domain,
path=path,
secure=secure,
samesite=samesite,
)
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/flask/config.py
|
# -*- coding: utf-8 -*-
"""
flask.config
~~~~~~~~~~~~
Implements the configuration related objects.
:copyright: 2010 Pallets
:license: BSD-3-Clause
"""
import errno
import os
import types
from werkzeug.utils import import_string
from . import json
from ._compat import iteritems
from ._compat import string_types
class ConfigAttribute(object):
"""Makes an attribute forward to the config"""
def __init__(self, name, get_converter=None):
self.__name__ = name
self.get_converter = get_converter
def __get__(self, obj, type=None):
if obj is None:
return self
rv = obj.config[self.__name__]
if self.get_converter is not None:
rv = self.get_converter(rv)
return rv
def __set__(self, obj, value):
obj.config[self.__name__] = value
class Config(dict):
"""Works exactly like a dict but provides ways to fill it from files
or special dictionaries. There are two common patterns to populate the
config.
Either you can fill the config from a config file::
app.config.from_pyfile('yourconfig.cfg')
Or alternatively you can define the configuration options in the
module that calls :meth:`from_object` or provide an import path to
a module that should be loaded. It is also possible to tell it to
use the same module and with that provide the configuration values
just before the call::
DEBUG = True
SECRET_KEY = 'development key'
app.config.from_object(__name__)
In both cases (loading from any Python file or loading from modules),
only uppercase keys are added to the config. This makes it possible to use
lowercase values in the config file for temporary values that are not added
to the config or to define the config keys in the same file that implements
the application.
Probably the most interesting way to load configurations is from an
environment variable pointing to a file::
app.config.from_envvar('YOURAPPLICATION_SETTINGS')
In this case before launching the application you have to set this
environment variable to the file you want to use. On Linux and OS X
use the export statement::
export YOURAPPLICATION_SETTINGS='/path/to/config/file'
On windows use `set` instead.
:param root_path: path to which files are read relative from. When the
config object is created by the application, this is
the application's :attr:`~flask.Flask.root_path`.
:param defaults: an optional dictionary of default values
"""
def __init__(self, root_path, defaults=None):
dict.__init__(self, defaults or {})
self.root_path = root_path
def from_envvar(self, variable_name, silent=False):
"""Loads a configuration from an environment variable pointing to
a configuration file. This is basically just a shortcut with nicer
error messages for this line of code::
app.config.from_pyfile(os.environ['YOURAPPLICATION_SETTINGS'])
:param variable_name: name of the environment variable
:param silent: set to ``True`` if you want silent failure for missing
files.
:return: bool. ``True`` if able to load config, ``False`` otherwise.
"""
rv = os.environ.get(variable_name)
if not rv:
if silent:
return False
raise RuntimeError(
"The environment variable %r is not set "
"and as such configuration could not be "
"loaded. Set this variable and make it "
"point to a configuration file" % variable_name
)
return self.from_pyfile(rv, silent=silent)
def from_pyfile(self, filename, silent=False):
"""Updates the values in the config from a Python file. This function
behaves as if the file was imported as module with the
:meth:`from_object` function.
:param filename: the filename of the config. This can either be an
absolute filename or a filename relative to the
root path.
:param silent: set to ``True`` if you want silent failure for missing
files.
.. versionadded:: 0.7
`silent` parameter.
"""
filename = os.path.join(self.root_path, filename)
d = types.ModuleType("config")
d.__file__ = filename
try:
with open(filename, mode="rb") as config_file:
exec(compile(config_file.read(), filename, "exec"), d.__dict__)
except IOError as e:
if silent and e.errno in (errno.ENOENT, errno.EISDIR, errno.ENOTDIR):
return False
e.strerror = "Unable to load configuration file (%s)" % e.strerror
raise
self.from_object(d)
return True
def from_object(self, obj):
"""Updates the values from the given object. An object can be of one
of the following two types:
- a string: in this case the object with that name will be imported
- an actual object reference: that object is used directly
Objects are usually either modules or classes. :meth:`from_object`
loads only the uppercase attributes of the module/class. A ``dict``
object will not work with :meth:`from_object` because the keys of a
``dict`` are not attributes of the ``dict`` class.
Example of module-based configuration::
app.config.from_object('yourapplication.default_config')
from yourapplication import default_config
app.config.from_object(default_config)
Nothing is done to the object before loading. If the object is a
class and has ``@property`` attributes, it needs to be
instantiated before being passed to this method.
You should not use this function to load the actual configuration but
rather configuration defaults. The actual config should be loaded
with :meth:`from_pyfile` and ideally from a location not within the
package because the package might be installed system wide.
See :ref:`config-dev-prod` for an example of class-based configuration
using :meth:`from_object`.
:param obj: an import name or object
"""
if isinstance(obj, string_types):
obj = import_string(obj)
for key in dir(obj):
if key.isupper():
self[key] = getattr(obj, key)
def from_json(self, filename, silent=False):
"""Updates the values in the config from a JSON file. This function
behaves as if the JSON object was a dictionary and passed to the
:meth:`from_mapping` function.
:param filename: the filename of the JSON file. This can either be an
absolute filename or a filename relative to the
root path.
:param silent: set to ``True`` if you want silent failure for missing
files.
.. versionadded:: 0.11
"""
filename = os.path.join(self.root_path, filename)
try:
with open(filename) as json_file:
obj = json.loads(json_file.read())
except IOError as e:
if silent and e.errno in (errno.ENOENT, errno.EISDIR):
return False
e.strerror = "Unable to load configuration file (%s)" % e.strerror
raise
return self.from_mapping(obj)
def from_mapping(self, *mapping, **kwargs):
"""Updates the config like :meth:`update` ignoring items with non-upper
keys.
.. versionadded:: 0.11
"""
mappings = []
if len(mapping) == 1:
if hasattr(mapping[0], "items"):
mappings.append(mapping[0].items())
else:
mappings.append(mapping[0])
elif len(mapping) > 1:
raise TypeError(
"expected at most 1 positional argument, got %d" % len(mapping)
)
mappings.append(kwargs.items())
for mapping in mappings:
for (key, value) in mapping:
if key.isupper():
self[key] = value
return True
def get_namespace(self, namespace, lowercase=True, trim_namespace=True):
"""Returns a dictionary containing a subset of configuration options
that match the specified namespace/prefix. Example usage::
app.config['IMAGE_STORE_TYPE'] = 'fs'
app.config['IMAGE_STORE_PATH'] = '/var/app/images'
app.config['IMAGE_STORE_BASE_URL'] = 'http://img.website.com'
image_store_config = app.config.get_namespace('IMAGE_STORE_')
The resulting dictionary `image_store_config` would look like::
{
'type': 'fs',
'path': '/var/app/images',
'base_url': 'http://img.website.com'
}
This is often useful when configuration options map directly to
keyword arguments in functions or class constructors.
:param namespace: a configuration namespace
:param lowercase: a flag indicating if the keys of the resulting
dictionary should be lowercase
:param trim_namespace: a flag indicating if the keys of the resulting
dictionary should not include the namespace
.. versionadded:: 0.11
"""
rv = {}
for k, v in iteritems(self):
if not k.startswith(namespace):
continue
if trim_namespace:
key = k[len(namespace) :]
else:
key = k
if lowercase:
key = key.lower()
rv[key] = v
return rv
def __repr__(self):
return "<%s %s>" % (self.__class__.__name__, dict.__repr__(self))
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/flask/templating.py
|
# -*- coding: utf-8 -*-
"""
flask.templating
~~~~~~~~~~~~~~~~
Implements the bridge to Jinja2.
:copyright: 2010 Pallets
:license: BSD-3-Clause
"""
from jinja2 import BaseLoader
from jinja2 import Environment as BaseEnvironment
from jinja2 import TemplateNotFound
from .globals import _app_ctx_stack
from .globals import _request_ctx_stack
from .signals import before_render_template
from .signals import template_rendered
def _default_template_ctx_processor():
"""Default template context processor. Injects `request`,
`session` and `g`.
"""
reqctx = _request_ctx_stack.top
appctx = _app_ctx_stack.top
rv = {}
if appctx is not None:
rv["g"] = appctx.g
if reqctx is not None:
rv["request"] = reqctx.request
rv["session"] = reqctx.session
return rv
class Environment(BaseEnvironment):
"""Works like a regular Jinja2 environment but has some additional
knowledge of how Flask's blueprint works so that it can prepend the
name of the blueprint to referenced templates if necessary.
"""
def __init__(self, app, **options):
if "loader" not in options:
options["loader"] = app.create_global_jinja_loader()
BaseEnvironment.__init__(self, **options)
self.app = app
class DispatchingJinjaLoader(BaseLoader):
"""A loader that looks for templates in the application and all
the blueprint folders.
"""
def __init__(self, app):
self.app = app
def get_source(self, environment, template):
if self.app.config["EXPLAIN_TEMPLATE_LOADING"]:
return self._get_source_explained(environment, template)
return self._get_source_fast(environment, template)
def _get_source_explained(self, environment, template):
attempts = []
trv = None
for srcobj, loader in self._iter_loaders(template):
try:
rv = loader.get_source(environment, template)
if trv is None:
trv = rv
except TemplateNotFound:
rv = None
attempts.append((loader, srcobj, rv))
from .debughelpers import explain_template_loading_attempts
explain_template_loading_attempts(self.app, template, attempts)
if trv is not None:
return trv
raise TemplateNotFound(template)
def _get_source_fast(self, environment, template):
for _srcobj, loader in self._iter_loaders(template):
try:
return loader.get_source(environment, template)
except TemplateNotFound:
continue
raise TemplateNotFound(template)
def _iter_loaders(self, template):
loader = self.app.jinja_loader
if loader is not None:
yield self.app, loader
for blueprint in self.app.iter_blueprints():
loader = blueprint.jinja_loader
if loader is not None:
yield blueprint, loader
def list_templates(self):
result = set()
loader = self.app.jinja_loader
if loader is not None:
result.update(loader.list_templates())
for blueprint in self.app.iter_blueprints():
loader = blueprint.jinja_loader
if loader is not None:
for template in loader.list_templates():
result.add(template)
return list(result)
def _render(template, context, app):
"""Renders the template and fires the signal"""
before_render_template.send(app, template=template, context=context)
rv = template.render(context)
template_rendered.send(app, template=template, context=context)
return rv
def render_template(template_name_or_list, **context):
"""Renders a template from the template folder with the given
context.
:param template_name_or_list: the name of the template to be
rendered, or an iterable with template names
the first one existing will be rendered
:param context: the variables that should be available in the
context of the template.
"""
ctx = _app_ctx_stack.top
ctx.app.update_template_context(context)
return _render(
ctx.app.jinja_env.get_or_select_template(template_name_or_list),
context,
ctx.app,
)
def render_template_string(source, **context):
"""Renders a template from the given template source string
with the given context. Template variables will be autoescaped.
:param source: the source code of the template to be
rendered
:param context: the variables that should be available in the
context of the template.
"""
ctx = _app_ctx_stack.top
ctx.app.update_template_context(context)
return _render(ctx.app.jinja_env.from_string(source), context, ctx.app)
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/flask/globals.py
|
# -*- coding: utf-8 -*-
"""
flask.globals
~~~~~~~~~~~~~
Defines all the global objects that are proxies to the current
active context.
:copyright: 2010 Pallets
:license: BSD-3-Clause
"""
from functools import partial
from werkzeug.local import LocalProxy
from werkzeug.local import LocalStack
_request_ctx_err_msg = """\
Working outside of request context.
This typically means that you attempted to use functionality that needed
an active HTTP request. Consult the documentation on testing for
information about how to avoid this problem.\
"""
_app_ctx_err_msg = """\
Working outside of application context.
This typically means that you attempted to use functionality that needed
to interface with the current application object in some way. To solve
this, set up an application context with app.app_context(). See the
documentation for more information.\
"""
def _lookup_req_object(name):
top = _request_ctx_stack.top
if top is None:
raise RuntimeError(_request_ctx_err_msg)
return getattr(top, name)
def _lookup_app_object(name):
top = _app_ctx_stack.top
if top is None:
raise RuntimeError(_app_ctx_err_msg)
return getattr(top, name)
def _find_app():
top = _app_ctx_stack.top
if top is None:
raise RuntimeError(_app_ctx_err_msg)
return top.app
# context locals
_request_ctx_stack = LocalStack()
_app_ctx_stack = LocalStack()
current_app = LocalProxy(_find_app)
request = LocalProxy(partial(_lookup_req_object, "request"))
session = LocalProxy(partial(_lookup_req_object, "session"))
g = LocalProxy(partial(_lookup_app_object, "g"))
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/flask/__init__.py
|
# -*- coding: utf-8 -*-
"""
flask
~~~~~
A microframework based on Werkzeug. It's extensively documented
and follows best practice patterns.
:copyright: 2010 Pallets
:license: BSD-3-Clause
"""
# utilities we import from Werkzeug and Jinja2 that are unused
# in the module but are exported as public interface.
from jinja2 import escape
from jinja2 import Markup
from werkzeug.exceptions import abort
from werkzeug.utils import redirect
from . import json
from ._compat import json_available
from .app import Flask
from .app import Request
from .app import Response
from .blueprints import Blueprint
from .config import Config
from .ctx import after_this_request
from .ctx import copy_current_request_context
from .ctx import has_app_context
from .ctx import has_request_context
from .globals import _app_ctx_stack
from .globals import _request_ctx_stack
from .globals import current_app
from .globals import g
from .globals import request
from .globals import session
from .helpers import flash
from .helpers import get_flashed_messages
from .helpers import get_template_attribute
from .helpers import make_response
from .helpers import safe_join
from .helpers import send_file
from .helpers import send_from_directory
from .helpers import stream_with_context
from .helpers import url_for
from .json import jsonify
from .signals import appcontext_popped
from .signals import appcontext_pushed
from .signals import appcontext_tearing_down
from .signals import before_render_template
from .signals import got_request_exception
from .signals import message_flashed
from .signals import request_finished
from .signals import request_started
from .signals import request_tearing_down
from .signals import signals_available
from .signals import template_rendered
from .templating import render_template
from .templating import render_template_string
__version__ = "1.1.2"
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/flask/blueprints.py
|
# -*- coding: utf-8 -*-
"""
flask.blueprints
~~~~~~~~~~~~~~~~
Blueprints are the recommended way to implement larger or more
pluggable applications in Flask 0.7 and later.
:copyright: 2010 Pallets
:license: BSD-3-Clause
"""
from functools import update_wrapper
from .helpers import _endpoint_from_view_func
from .helpers import _PackageBoundObject
# a singleton sentinel value for parameter defaults
_sentinel = object()
class BlueprintSetupState(object):
"""Temporary holder object for registering a blueprint with the
application. An instance of this class is created by the
:meth:`~flask.Blueprint.make_setup_state` method and later passed
to all register callback functions.
"""
def __init__(self, blueprint, app, options, first_registration):
#: a reference to the current application
self.app = app
#: a reference to the blueprint that created this setup state.
self.blueprint = blueprint
#: a dictionary with all options that were passed to the
#: :meth:`~flask.Flask.register_blueprint` method.
self.options = options
#: as blueprints can be registered multiple times with the
#: application and not everything wants to be registered
#: multiple times on it, this attribute can be used to figure
#: out if the blueprint was registered in the past already.
self.first_registration = first_registration
subdomain = self.options.get("subdomain")
if subdomain is None:
subdomain = self.blueprint.subdomain
#: The subdomain that the blueprint should be active for, ``None``
#: otherwise.
self.subdomain = subdomain
url_prefix = self.options.get("url_prefix")
if url_prefix is None:
url_prefix = self.blueprint.url_prefix
#: The prefix that should be used for all URLs defined on the
#: blueprint.
self.url_prefix = url_prefix
#: A dictionary with URL defaults that is added to each and every
#: URL that was defined with the blueprint.
self.url_defaults = dict(self.blueprint.url_values_defaults)
self.url_defaults.update(self.options.get("url_defaults", ()))
def add_url_rule(self, rule, endpoint=None, view_func=None, **options):
"""A helper method to register a rule (and optionally a view function)
to the application. The endpoint is automatically prefixed with the
blueprint's name.
"""
if self.url_prefix is not None:
if rule:
rule = "/".join((self.url_prefix.rstrip("/"), rule.lstrip("/")))
else:
rule = self.url_prefix
options.setdefault("subdomain", self.subdomain)
if endpoint is None:
endpoint = _endpoint_from_view_func(view_func)
defaults = self.url_defaults
if "defaults" in options:
defaults = dict(defaults, **options.pop("defaults"))
self.app.add_url_rule(
rule,
"%s.%s" % (self.blueprint.name, endpoint),
view_func,
defaults=defaults,
**options
)
class Blueprint(_PackageBoundObject):
"""Represents a blueprint, a collection of routes and other
app-related functions that can be registered on a real application
later.
A blueprint is an object that allows defining application functions
without requiring an application object ahead of time. It uses the
same decorators as :class:`~flask.Flask`, but defers the need for an
application by recording them for later registration.
Decorating a function with a blueprint creates a deferred function
that is called with :class:`~flask.blueprints.BlueprintSetupState`
when the blueprint is registered on an application.
See :ref:`blueprints` for more information.
.. versionchanged:: 1.1.0
Blueprints have a ``cli`` group to register nested CLI commands.
The ``cli_group`` parameter controls the name of the group under
the ``flask`` command.
.. versionadded:: 0.7
:param name: The name of the blueprint. Will be prepended to each
endpoint name.
:param import_name: The name of the blueprint package, usually
``__name__``. This helps locate the ``root_path`` for the
blueprint.
:param static_folder: A folder with static files that should be
served by the blueprint's static route. The path is relative to
the blueprint's root path. Blueprint static files are disabled
by default.
:param static_url_path: The url to serve static files from.
Defaults to ``static_folder``. If the blueprint does not have
a ``url_prefix``, the app's static route will take precedence,
and the blueprint's static files won't be accessible.
:param template_folder: A folder with templates that should be added
to the app's template search path. The path is relative to the
blueprint's root path. Blueprint templates are disabled by
default. Blueprint templates have a lower precedence than those
in the app's templates folder.
:param url_prefix: A path to prepend to all of the blueprint's URLs,
to make them distinct from the rest of the app's routes.
:param subdomain: A subdomain that blueprint routes will match on by
default.
:param url_defaults: A dict of default values that blueprint routes
will receive by default.
:param root_path: By default, the blueprint will automatically this
based on ``import_name``. In certain situations this automatic
detection can fail, so the path can be specified manually
instead.
"""
warn_on_modifications = False
_got_registered_once = False
#: Blueprint local JSON decoder class to use.
#: Set to ``None`` to use the app's :class:`~flask.app.Flask.json_encoder`.
json_encoder = None
#: Blueprint local JSON decoder class to use.
#: Set to ``None`` to use the app's :class:`~flask.app.Flask.json_decoder`.
json_decoder = None
# TODO remove the next three attrs when Sphinx :inherited-members: works
# https://github.com/sphinx-doc/sphinx/issues/741
#: The name of the package or module that this app belongs to. Do not
#: change this once it is set by the constructor.
import_name = None
#: Location of the template files to be added to the template lookup.
#: ``None`` if templates should not be added.
template_folder = None
#: Absolute path to the package on the filesystem. Used to look up
#: resources contained in the package.
root_path = None
def __init__(
self,
name,
import_name,
static_folder=None,
static_url_path=None,
template_folder=None,
url_prefix=None,
subdomain=None,
url_defaults=None,
root_path=None,
cli_group=_sentinel,
):
_PackageBoundObject.__init__(
self, import_name, template_folder, root_path=root_path
)
self.name = name
self.url_prefix = url_prefix
self.subdomain = subdomain
self.static_folder = static_folder
self.static_url_path = static_url_path
self.deferred_functions = []
if url_defaults is None:
url_defaults = {}
self.url_values_defaults = url_defaults
self.cli_group = cli_group
def record(self, func):
"""Registers a function that is called when the blueprint is
registered on the application. This function is called with the
state as argument as returned by the :meth:`make_setup_state`
method.
"""
if self._got_registered_once and self.warn_on_modifications:
from warnings import warn
warn(
Warning(
"The blueprint was already registered once "
"but is getting modified now. These changes "
"will not show up."
)
)
self.deferred_functions.append(func)
def record_once(self, func):
"""Works like :meth:`record` but wraps the function in another
function that will ensure the function is only called once. If the
blueprint is registered a second time on the application, the
function passed is not called.
"""
def wrapper(state):
if state.first_registration:
func(state)
return self.record(update_wrapper(wrapper, func))
def make_setup_state(self, app, options, first_registration=False):
"""Creates an instance of :meth:`~flask.blueprints.BlueprintSetupState`
object that is later passed to the register callback functions.
Subclasses can override this to return a subclass of the setup state.
"""
return BlueprintSetupState(self, app, options, first_registration)
def register(self, app, options, first_registration=False):
"""Called by :meth:`Flask.register_blueprint` to register all views
and callbacks registered on the blueprint with the application. Creates
a :class:`.BlueprintSetupState` and calls each :meth:`record` callback
with it.
:param app: The application this blueprint is being registered with.
:param options: Keyword arguments forwarded from
:meth:`~Flask.register_blueprint`.
:param first_registration: Whether this is the first time this
blueprint has been registered on the application.
"""
self._got_registered_once = True
state = self.make_setup_state(app, options, first_registration)
if self.has_static_folder:
state.add_url_rule(
self.static_url_path + "/<path:filename>",
view_func=self.send_static_file,
endpoint="static",
)
for deferred in self.deferred_functions:
deferred(state)
cli_resolved_group = options.get("cli_group", self.cli_group)
if not self.cli.commands:
return
if cli_resolved_group is None:
app.cli.commands.update(self.cli.commands)
elif cli_resolved_group is _sentinel:
self.cli.name = self.name
app.cli.add_command(self.cli)
else:
self.cli.name = cli_resolved_group
app.cli.add_command(self.cli)
def route(self, rule, **options):
"""Like :meth:`Flask.route` but for a blueprint. The endpoint for the
:func:`url_for` function is prefixed with the name of the blueprint.
"""
def decorator(f):
endpoint = options.pop("endpoint", f.__name__)
self.add_url_rule(rule, endpoint, f, **options)
return f
return decorator
def add_url_rule(self, rule, endpoint=None, view_func=None, **options):
"""Like :meth:`Flask.add_url_rule` but for a blueprint. The endpoint for
the :func:`url_for` function is prefixed with the name of the blueprint.
"""
if endpoint:
assert "." not in endpoint, "Blueprint endpoints should not contain dots"
if view_func and hasattr(view_func, "__name__"):
assert (
"." not in view_func.__name__
), "Blueprint view function name should not contain dots"
self.record(lambda s: s.add_url_rule(rule, endpoint, view_func, **options))
def endpoint(self, endpoint):
"""Like :meth:`Flask.endpoint` but for a blueprint. This does not
prefix the endpoint with the blueprint name, this has to be done
explicitly by the user of this method. If the endpoint is prefixed
with a `.` it will be registered to the current blueprint, otherwise
it's an application independent endpoint.
"""
def decorator(f):
def register_endpoint(state):
state.app.view_functions[endpoint] = f
self.record_once(register_endpoint)
return f
return decorator
def app_template_filter(self, name=None):
"""Register a custom template filter, available application wide. Like
:meth:`Flask.template_filter` but for a blueprint.
:param name: the optional name of the filter, otherwise the
function name will be used.
"""
def decorator(f):
self.add_app_template_filter(f, name=name)
return f
return decorator
def add_app_template_filter(self, f, name=None):
"""Register a custom template filter, available application wide. Like
:meth:`Flask.add_template_filter` but for a blueprint. Works exactly
like the :meth:`app_template_filter` decorator.
:param name: the optional name of the filter, otherwise the
function name will be used.
"""
def register_template(state):
state.app.jinja_env.filters[name or f.__name__] = f
self.record_once(register_template)
def app_template_test(self, name=None):
"""Register a custom template test, available application wide. Like
:meth:`Flask.template_test` but for a blueprint.
.. versionadded:: 0.10
:param name: the optional name of the test, otherwise the
function name will be used.
"""
def decorator(f):
self.add_app_template_test(f, name=name)
return f
return decorator
def add_app_template_test(self, f, name=None):
"""Register a custom template test, available application wide. Like
:meth:`Flask.add_template_test` but for a blueprint. Works exactly
like the :meth:`app_template_test` decorator.
.. versionadded:: 0.10
:param name: the optional name of the test, otherwise the
function name will be used.
"""
def register_template(state):
state.app.jinja_env.tests[name or f.__name__] = f
self.record_once(register_template)
def app_template_global(self, name=None):
"""Register a custom template global, available application wide. Like
:meth:`Flask.template_global` but for a blueprint.
.. versionadded:: 0.10
:param name: the optional name of the global, otherwise the
function name will be used.
"""
def decorator(f):
self.add_app_template_global(f, name=name)
return f
return decorator
def add_app_template_global(self, f, name=None):
"""Register a custom template global, available application wide. Like
:meth:`Flask.add_template_global` but for a blueprint. Works exactly
like the :meth:`app_template_global` decorator.
.. versionadded:: 0.10
:param name: the optional name of the global, otherwise the
function name will be used.
"""
def register_template(state):
state.app.jinja_env.globals[name or f.__name__] = f
self.record_once(register_template)
def before_request(self, f):
"""Like :meth:`Flask.before_request` but for a blueprint. This function
is only executed before each request that is handled by a function of
that blueprint.
"""
self.record_once(
lambda s: s.app.before_request_funcs.setdefault(self.name, []).append(f)
)
return f
def before_app_request(self, f):
"""Like :meth:`Flask.before_request`. Such a function is executed
before each request, even if outside of a blueprint.
"""
self.record_once(
lambda s: s.app.before_request_funcs.setdefault(None, []).append(f)
)
return f
def before_app_first_request(self, f):
"""Like :meth:`Flask.before_first_request`. Such a function is
executed before the first request to the application.
"""
self.record_once(lambda s: s.app.before_first_request_funcs.append(f))
return f
def after_request(self, f):
"""Like :meth:`Flask.after_request` but for a blueprint. This function
is only executed after each request that is handled by a function of
that blueprint.
"""
self.record_once(
lambda s: s.app.after_request_funcs.setdefault(self.name, []).append(f)
)
return f
def after_app_request(self, f):
"""Like :meth:`Flask.after_request` but for a blueprint. Such a function
is executed after each request, even if outside of the blueprint.
"""
self.record_once(
lambda s: s.app.after_request_funcs.setdefault(None, []).append(f)
)
return f
def teardown_request(self, f):
"""Like :meth:`Flask.teardown_request` but for a blueprint. This
function is only executed when tearing down requests handled by a
function of that blueprint. Teardown request functions are executed
when the request context is popped, even when no actual request was
performed.
"""
self.record_once(
lambda s: s.app.teardown_request_funcs.setdefault(self.name, []).append(f)
)
return f
def teardown_app_request(self, f):
"""Like :meth:`Flask.teardown_request` but for a blueprint. Such a
function is executed when tearing down each request, even if outside of
the blueprint.
"""
self.record_once(
lambda s: s.app.teardown_request_funcs.setdefault(None, []).append(f)
)
return f
def context_processor(self, f):
"""Like :meth:`Flask.context_processor` but for a blueprint. This
function is only executed for requests handled by a blueprint.
"""
self.record_once(
lambda s: s.app.template_context_processors.setdefault(
self.name, []
).append(f)
)
return f
def app_context_processor(self, f):
"""Like :meth:`Flask.context_processor` but for a blueprint. Such a
function is executed each request, even if outside of the blueprint.
"""
self.record_once(
lambda s: s.app.template_context_processors.setdefault(None, []).append(f)
)
return f
def app_errorhandler(self, code):
"""Like :meth:`Flask.errorhandler` but for a blueprint. This
handler is used for all requests, even if outside of the blueprint.
"""
def decorator(f):
self.record_once(lambda s: s.app.errorhandler(code)(f))
return f
return decorator
def url_value_preprocessor(self, f):
"""Registers a function as URL value preprocessor for this
blueprint. It's called before the view functions are called and
can modify the url values provided.
"""
self.record_once(
lambda s: s.app.url_value_preprocessors.setdefault(self.name, []).append(f)
)
return f
def url_defaults(self, f):
"""Callback function for URL defaults for this blueprint. It's called
with the endpoint and values and should update the values passed
in place.
"""
self.record_once(
lambda s: s.app.url_default_functions.setdefault(self.name, []).append(f)
)
return f
def app_url_value_preprocessor(self, f):
"""Same as :meth:`url_value_preprocessor` but application wide.
"""
self.record_once(
lambda s: s.app.url_value_preprocessors.setdefault(None, []).append(f)
)
return f
def app_url_defaults(self, f):
"""Same as :meth:`url_defaults` but application wide.
"""
self.record_once(
lambda s: s.app.url_default_functions.setdefault(None, []).append(f)
)
return f
def errorhandler(self, code_or_exception):
"""Registers an error handler that becomes active for this blueprint
only. Please be aware that routing does not happen local to a
blueprint so an error handler for 404 usually is not handled by
a blueprint unless it is caused inside a view function. Another
special case is the 500 internal server error which is always looked
up from the application.
Otherwise works as the :meth:`~flask.Flask.errorhandler` decorator
of the :class:`~flask.Flask` object.
"""
def decorator(f):
self.record_once(
lambda s: s.app._register_error_handler(self.name, code_or_exception, f)
)
return f
return decorator
def register_error_handler(self, code_or_exception, f):
"""Non-decorator version of the :meth:`errorhandler` error attach
function, akin to the :meth:`~flask.Flask.register_error_handler`
application-wide function of the :class:`~flask.Flask` object but
for error handlers limited to this blueprint.
.. versionadded:: 0.11
"""
self.record_once(
lambda s: s.app._register_error_handler(self.name, code_or_exception, f)
)
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/flask/cli.py
|
# -*- coding: utf-8 -*-
"""
flask.cli
~~~~~~~~~
A simple command line application to run flask apps.
:copyright: 2010 Pallets
:license: BSD-3-Clause
"""
from __future__ import print_function
import ast
import inspect
import os
import platform
import re
import sys
import traceback
from functools import update_wrapper
from operator import attrgetter
from threading import Lock
from threading import Thread
import click
from werkzeug.utils import import_string
from ._compat import getargspec
from ._compat import itervalues
from ._compat import reraise
from ._compat import text_type
from .globals import current_app
from .helpers import get_debug_flag
from .helpers import get_env
from .helpers import get_load_dotenv
try:
import dotenv
except ImportError:
dotenv = None
try:
import ssl
except ImportError:
ssl = None
class NoAppException(click.UsageError):
"""Raised if an application cannot be found or loaded."""
def find_best_app(script_info, module):
"""Given a module instance this tries to find the best possible
application in the module or raises an exception.
"""
from . import Flask
# Search for the most common names first.
for attr_name in ("app", "application"):
app = getattr(module, attr_name, None)
if isinstance(app, Flask):
return app
# Otherwise find the only object that is a Flask instance.
matches = [v for v in itervalues(module.__dict__) if isinstance(v, Flask)]
if len(matches) == 1:
return matches[0]
elif len(matches) > 1:
raise NoAppException(
'Detected multiple Flask applications in module "{module}". Use '
'"FLASK_APP={module}:name" to specify the correct '
"one.".format(module=module.__name__)
)
# Search for app factory functions.
for attr_name in ("create_app", "make_app"):
app_factory = getattr(module, attr_name, None)
if inspect.isfunction(app_factory):
try:
app = call_factory(script_info, app_factory)
if isinstance(app, Flask):
return app
except TypeError:
if not _called_with_wrong_args(app_factory):
raise
raise NoAppException(
'Detected factory "{factory}" in module "{module}", but '
"could not call it without arguments. Use "
"\"FLASK_APP='{module}:{factory}(args)'\" to specify "
"arguments.".format(factory=attr_name, module=module.__name__)
)
raise NoAppException(
'Failed to find Flask application or factory in module "{module}". '
'Use "FLASK_APP={module}:name to specify one.'.format(module=module.__name__)
)
def call_factory(script_info, app_factory, arguments=()):
"""Takes an app factory, a ``script_info` object and optionally a tuple
of arguments. Checks for the existence of a script_info argument and calls
the app_factory depending on that and the arguments provided.
"""
args_spec = getargspec(app_factory)
arg_names = args_spec.args
arg_defaults = args_spec.defaults
if "script_info" in arg_names:
return app_factory(*arguments, script_info=script_info)
elif arguments:
return app_factory(*arguments)
elif not arguments and len(arg_names) == 1 and arg_defaults is None:
return app_factory(script_info)
return app_factory()
def _called_with_wrong_args(factory):
"""Check whether calling a function raised a ``TypeError`` because
the call failed or because something in the factory raised the
error.
:param factory: the factory function that was called
:return: true if the call failed
"""
tb = sys.exc_info()[2]
try:
while tb is not None:
if tb.tb_frame.f_code is factory.__code__:
# in the factory, it was called successfully
return False
tb = tb.tb_next
# didn't reach the factory
return True
finally:
# explicitly delete tb as it is circular referenced
# https://docs.python.org/2/library/sys.html#sys.exc_info
del tb
def find_app_by_string(script_info, module, app_name):
"""Checks if the given string is a variable name or a function. If it is a
function, it checks for specified arguments and whether it takes a
``script_info`` argument and calls the function with the appropriate
arguments.
"""
from . import Flask
match = re.match(r"^ *([^ ()]+) *(?:\((.*?) *,? *\))? *$", app_name)
if not match:
raise NoAppException(
'"{name}" is not a valid variable name or function '
"expression.".format(name=app_name)
)
name, args = match.groups()
try:
attr = getattr(module, name)
except AttributeError as e:
raise NoAppException(e.args[0])
if inspect.isfunction(attr):
if args:
try:
args = ast.literal_eval("({args},)".format(args=args))
except (ValueError, SyntaxError) as e:
raise NoAppException(
"Could not parse the arguments in "
'"{app_name}".'.format(e=e, app_name=app_name)
)
else:
args = ()
try:
app = call_factory(script_info, attr, args)
except TypeError as e:
if not _called_with_wrong_args(attr):
raise
raise NoAppException(
'{e}\nThe factory "{app_name}" in module "{module}" could not '
"be called with the specified arguments.".format(
e=e, app_name=app_name, module=module.__name__
)
)
else:
app = attr
if isinstance(app, Flask):
return app
raise NoAppException(
"A valid Flask application was not obtained from "
'"{module}:{app_name}".'.format(module=module.__name__, app_name=app_name)
)
def prepare_import(path):
"""Given a filename this will try to calculate the python path, add it
to the search path and return the actual module name that is expected.
"""
path = os.path.realpath(path)
fname, ext = os.path.splitext(path)
if ext == ".py":
path = fname
if os.path.basename(path) == "__init__":
path = os.path.dirname(path)
module_name = []
# move up until outside package structure (no __init__.py)
while True:
path, name = os.path.split(path)
module_name.append(name)
if not os.path.exists(os.path.join(path, "__init__.py")):
break
if sys.path[0] != path:
sys.path.insert(0, path)
return ".".join(module_name[::-1])
def locate_app(script_info, module_name, app_name, raise_if_not_found=True):
__traceback_hide__ = True # noqa: F841
try:
__import__(module_name)
except ImportError:
# Reraise the ImportError if it occurred within the imported module.
# Determine this by checking whether the trace has a depth > 1.
if sys.exc_info()[-1].tb_next:
raise NoAppException(
'While importing "{name}", an ImportError was raised:'
"\n\n{tb}".format(name=module_name, tb=traceback.format_exc())
)
elif raise_if_not_found:
raise NoAppException('Could not import "{name}".'.format(name=module_name))
else:
return
module = sys.modules[module_name]
if app_name is None:
return find_best_app(script_info, module)
else:
return find_app_by_string(script_info, module, app_name)
def get_version(ctx, param, value):
if not value or ctx.resilient_parsing:
return
import werkzeug
from . import __version__
message = "Python %(python)s\nFlask %(flask)s\nWerkzeug %(werkzeug)s"
click.echo(
message
% {
"python": platform.python_version(),
"flask": __version__,
"werkzeug": werkzeug.__version__,
},
color=ctx.color,
)
ctx.exit()
version_option = click.Option(
["--version"],
help="Show the flask version",
expose_value=False,
callback=get_version,
is_flag=True,
is_eager=True,
)
class DispatchingApp(object):
"""Special application that dispatches to a Flask application which
is imported by name in a background thread. If an error happens
it is recorded and shown as part of the WSGI handling which in case
of the Werkzeug debugger means that it shows up in the browser.
"""
def __init__(self, loader, use_eager_loading=False):
self.loader = loader
self._app = None
self._lock = Lock()
self._bg_loading_exc_info = None
if use_eager_loading:
self._load_unlocked()
else:
self._load_in_background()
def _load_in_background(self):
def _load_app():
__traceback_hide__ = True # noqa: F841
with self._lock:
try:
self._load_unlocked()
except Exception:
self._bg_loading_exc_info = sys.exc_info()
t = Thread(target=_load_app, args=())
t.start()
def _flush_bg_loading_exception(self):
__traceback_hide__ = True # noqa: F841
exc_info = self._bg_loading_exc_info
if exc_info is not None:
self._bg_loading_exc_info = None
reraise(*exc_info)
def _load_unlocked(self):
__traceback_hide__ = True # noqa: F841
self._app = rv = self.loader()
self._bg_loading_exc_info = None
return rv
def __call__(self, environ, start_response):
__traceback_hide__ = True # noqa: F841
if self._app is not None:
return self._app(environ, start_response)
self._flush_bg_loading_exception()
with self._lock:
if self._app is not None:
rv = self._app
else:
rv = self._load_unlocked()
return rv(environ, start_response)
class ScriptInfo(object):
"""Helper object to deal with Flask applications. This is usually not
necessary to interface with as it's used internally in the dispatching
to click. In future versions of Flask this object will most likely play
a bigger role. Typically it's created automatically by the
:class:`FlaskGroup` but you can also manually create it and pass it
onwards as click object.
"""
def __init__(self, app_import_path=None, create_app=None, set_debug_flag=True):
#: Optionally the import path for the Flask application.
self.app_import_path = app_import_path or os.environ.get("FLASK_APP")
#: Optionally a function that is passed the script info to create
#: the instance of the application.
self.create_app = create_app
#: A dictionary with arbitrary data that can be associated with
#: this script info.
self.data = {}
self.set_debug_flag = set_debug_flag
self._loaded_app = None
def load_app(self):
"""Loads the Flask app (if not yet loaded) and returns it. Calling
this multiple times will just result in the already loaded app to
be returned.
"""
__traceback_hide__ = True # noqa: F841
if self._loaded_app is not None:
return self._loaded_app
app = None
if self.create_app is not None:
app = call_factory(self, self.create_app)
else:
if self.app_import_path:
path, name = (
re.split(r":(?![\\/])", self.app_import_path, 1) + [None]
)[:2]
import_name = prepare_import(path)
app = locate_app(self, import_name, name)
else:
for path in ("wsgi.py", "app.py"):
import_name = prepare_import(path)
app = locate_app(self, import_name, None, raise_if_not_found=False)
if app:
break
if not app:
raise NoAppException(
"Could not locate a Flask application. You did not provide "
'the "FLASK_APP" environment variable, and a "wsgi.py" or '
'"app.py" module was not found in the current directory.'
)
if self.set_debug_flag:
# Update the app's debug flag through the descriptor so that
# other values repopulate as well.
app.debug = get_debug_flag()
self._loaded_app = app
return app
pass_script_info = click.make_pass_decorator(ScriptInfo, ensure=True)
def with_appcontext(f):
"""Wraps a callback so that it's guaranteed to be executed with the
script's application context. If callbacks are registered directly
to the ``app.cli`` object then they are wrapped with this function
by default unless it's disabled.
"""
@click.pass_context
def decorator(__ctx, *args, **kwargs):
with __ctx.ensure_object(ScriptInfo).load_app().app_context():
return __ctx.invoke(f, *args, **kwargs)
return update_wrapper(decorator, f)
class AppGroup(click.Group):
"""This works similar to a regular click :class:`~click.Group` but it
changes the behavior of the :meth:`command` decorator so that it
automatically wraps the functions in :func:`with_appcontext`.
Not to be confused with :class:`FlaskGroup`.
"""
def command(self, *args, **kwargs):
"""This works exactly like the method of the same name on a regular
:class:`click.Group` but it wraps callbacks in :func:`with_appcontext`
unless it's disabled by passing ``with_appcontext=False``.
"""
wrap_for_ctx = kwargs.pop("with_appcontext", True)
def decorator(f):
if wrap_for_ctx:
f = with_appcontext(f)
return click.Group.command(self, *args, **kwargs)(f)
return decorator
def group(self, *args, **kwargs):
"""This works exactly like the method of the same name on a regular
:class:`click.Group` but it defaults the group class to
:class:`AppGroup`.
"""
kwargs.setdefault("cls", AppGroup)
return click.Group.group(self, *args, **kwargs)
class FlaskGroup(AppGroup):
"""Special subclass of the :class:`AppGroup` group that supports
loading more commands from the configured Flask app. Normally a
developer does not have to interface with this class but there are
some very advanced use cases for which it makes sense to create an
instance of this.
For information as of why this is useful see :ref:`custom-scripts`.
:param add_default_commands: if this is True then the default run and
shell commands will be added.
:param add_version_option: adds the ``--version`` option.
:param create_app: an optional callback that is passed the script info and
returns the loaded app.
:param load_dotenv: Load the nearest :file:`.env` and :file:`.flaskenv`
files to set environment variables. Will also change the working
directory to the directory containing the first file found.
:param set_debug_flag: Set the app's debug flag based on the active
environment
.. versionchanged:: 1.0
If installed, python-dotenv will be used to load environment variables
from :file:`.env` and :file:`.flaskenv` files.
"""
def __init__(
self,
add_default_commands=True,
create_app=None,
add_version_option=True,
load_dotenv=True,
set_debug_flag=True,
**extra
):
params = list(extra.pop("params", None) or ())
if add_version_option:
params.append(version_option)
AppGroup.__init__(self, params=params, **extra)
self.create_app = create_app
self.load_dotenv = load_dotenv
self.set_debug_flag = set_debug_flag
if add_default_commands:
self.add_command(run_command)
self.add_command(shell_command)
self.add_command(routes_command)
self._loaded_plugin_commands = False
def _load_plugin_commands(self):
if self._loaded_plugin_commands:
return
try:
import pkg_resources
except ImportError:
self._loaded_plugin_commands = True
return
for ep in pkg_resources.iter_entry_points("flask.commands"):
self.add_command(ep.load(), ep.name)
self._loaded_plugin_commands = True
def get_command(self, ctx, name):
self._load_plugin_commands()
# We load built-in commands first as these should always be the
# same no matter what the app does. If the app does want to
# override this it needs to make a custom instance of this group
# and not attach the default commands.
#
# This also means that the script stays functional in case the
# application completely fails.
rv = AppGroup.get_command(self, ctx, name)
if rv is not None:
return rv
info = ctx.ensure_object(ScriptInfo)
try:
rv = info.load_app().cli.get_command(ctx, name)
if rv is not None:
return rv
except NoAppException:
pass
def list_commands(self, ctx):
self._load_plugin_commands()
# The commands available is the list of both the application (if
# available) plus the builtin commands.
rv = set(click.Group.list_commands(self, ctx))
info = ctx.ensure_object(ScriptInfo)
try:
rv.update(info.load_app().cli.list_commands(ctx))
except Exception:
# Here we intentionally swallow all exceptions as we don't
# want the help page to break if the app does not exist.
# If someone attempts to use the command we try to create
# the app again and this will give us the error.
# However, we will not do so silently because that would confuse
# users.
traceback.print_exc()
return sorted(rv)
def main(self, *args, **kwargs):
# Set a global flag that indicates that we were invoked from the
# command line interface. This is detected by Flask.run to make the
# call into a no-op. This is necessary to avoid ugly errors when the
# script that is loaded here also attempts to start a server.
os.environ["FLASK_RUN_FROM_CLI"] = "true"
if get_load_dotenv(self.load_dotenv):
load_dotenv()
obj = kwargs.get("obj")
if obj is None:
obj = ScriptInfo(
create_app=self.create_app, set_debug_flag=self.set_debug_flag
)
kwargs["obj"] = obj
kwargs.setdefault("auto_envvar_prefix", "FLASK")
return super(FlaskGroup, self).main(*args, **kwargs)
def _path_is_ancestor(path, other):
"""Take ``other`` and remove the length of ``path`` from it. Then join it
to ``path``. If it is the original value, ``path`` is an ancestor of
``other``."""
return os.path.join(path, other[len(path) :].lstrip(os.sep)) == other
def load_dotenv(path=None):
"""Load "dotenv" files in order of precedence to set environment variables.
If an env var is already set it is not overwritten, so earlier files in the
list are preferred over later files.
Changes the current working directory to the location of the first file
found, with the assumption that it is in the top level project directory
and will be where the Python path should import local packages from.
This is a no-op if `python-dotenv`_ is not installed.
.. _python-dotenv: https://github.com/theskumar/python-dotenv#readme
:param path: Load the file at this location instead of searching.
:return: ``True`` if a file was loaded.
.. versionchanged:: 1.1.0
Returns ``False`` when python-dotenv is not installed, or when
the given path isn't a file.
.. versionadded:: 1.0
"""
if dotenv is None:
if path or os.path.isfile(".env") or os.path.isfile(".flaskenv"):
click.secho(
" * Tip: There are .env or .flaskenv files present."
' Do "pip install python-dotenv" to use them.',
fg="yellow",
err=True,
)
return False
# if the given path specifies the actual file then return True,
# else False
if path is not None:
if os.path.isfile(path):
return dotenv.load_dotenv(path)
return False
new_dir = None
for name in (".env", ".flaskenv"):
path = dotenv.find_dotenv(name, usecwd=True)
if not path:
continue
if new_dir is None:
new_dir = os.path.dirname(path)
dotenv.load_dotenv(path)
if new_dir and os.getcwd() != new_dir:
os.chdir(new_dir)
return new_dir is not None # at least one file was located and loaded
def show_server_banner(env, debug, app_import_path, eager_loading):
"""Show extra startup messages the first time the server is run,
ignoring the reloader.
"""
if os.environ.get("WERKZEUG_RUN_MAIN") == "true":
return
if app_import_path is not None:
message = ' * Serving Flask app "{0}"'.format(app_import_path)
if not eager_loading:
message += " (lazy loading)"
click.echo(message)
click.echo(" * Environment: {0}".format(env))
if env == "production":
click.secho(
" WARNING: This is a development server. "
"Do not use it in a production deployment.",
fg="red",
)
click.secho(" Use a production WSGI server instead.", dim=True)
if debug is not None:
click.echo(" * Debug mode: {0}".format("on" if debug else "off"))
class CertParamType(click.ParamType):
"""Click option type for the ``--cert`` option. Allows either an
existing file, the string ``'adhoc'``, or an import for a
:class:`~ssl.SSLContext` object.
"""
name = "path"
def __init__(self):
self.path_type = click.Path(exists=True, dir_okay=False, resolve_path=True)
def convert(self, value, param, ctx):
if ssl is None:
raise click.BadParameter(
'Using "--cert" requires Python to be compiled with SSL support.',
ctx,
param,
)
try:
return self.path_type(value, param, ctx)
except click.BadParameter:
value = click.STRING(value, param, ctx).lower()
if value == "adhoc":
try:
import OpenSSL # noqa: F401
except ImportError:
raise click.BadParameter(
"Using ad-hoc certificates requires pyOpenSSL.", ctx, param
)
return value
obj = import_string(value, silent=True)
if sys.version_info < (2, 7, 9):
if obj:
return obj
else:
if isinstance(obj, ssl.SSLContext):
return obj
raise
def _validate_key(ctx, param, value):
"""The ``--key`` option must be specified when ``--cert`` is a file.
Modifies the ``cert`` param to be a ``(cert, key)`` pair if needed.
"""
cert = ctx.params.get("cert")
is_adhoc = cert == "adhoc"
if sys.version_info < (2, 7, 9):
is_context = cert and not isinstance(cert, (text_type, bytes))
else:
is_context = isinstance(cert, ssl.SSLContext)
if value is not None:
if is_adhoc:
raise click.BadParameter(
'When "--cert" is "adhoc", "--key" is not used.', ctx, param
)
if is_context:
raise click.BadParameter(
'When "--cert" is an SSLContext object, "--key is not used.', ctx, param
)
if not cert:
raise click.BadParameter('"--cert" must also be specified.', ctx, param)
ctx.params["cert"] = cert, value
else:
if cert and not (is_adhoc or is_context):
raise click.BadParameter('Required when using "--cert".', ctx, param)
return value
class SeparatedPathType(click.Path):
"""Click option type that accepts a list of values separated by the
OS's path separator (``:``, ``;`` on Windows). Each value is
validated as a :class:`click.Path` type.
"""
def convert(self, value, param, ctx):
items = self.split_envvar_value(value)
super_convert = super(SeparatedPathType, self).convert
return [super_convert(item, param, ctx) for item in items]
@click.command("run", short_help="Run a development server.")
@click.option("--host", "-h", default="127.0.0.1", help="The interface to bind to.")
@click.option("--port", "-p", default=5000, help="The port to bind to.")
@click.option(
"--cert", type=CertParamType(), help="Specify a certificate file to use HTTPS."
)
@click.option(
"--key",
type=click.Path(exists=True, dir_okay=False, resolve_path=True),
callback=_validate_key,
expose_value=False,
help="The key file to use when specifying a certificate.",
)
@click.option(
"--reload/--no-reload",
default=None,
help="Enable or disable the reloader. By default the reloader "
"is active if debug is enabled.",
)
@click.option(
"--debugger/--no-debugger",
default=None,
help="Enable or disable the debugger. By default the debugger "
"is active if debug is enabled.",
)
@click.option(
"--eager-loading/--lazy-loader",
default=None,
help="Enable or disable eager loading. By default eager "
"loading is enabled if the reloader is disabled.",
)
@click.option(
"--with-threads/--without-threads",
default=True,
help="Enable or disable multithreading.",
)
@click.option(
"--extra-files",
default=None,
type=SeparatedPathType(),
help=(
"Extra files that trigger a reload on change. Multiple paths"
" are separated by '{}'.".format(os.path.pathsep)
),
)
@pass_script_info
def run_command(
info, host, port, reload, debugger, eager_loading, with_threads, cert, extra_files
):
"""Run a local development server.
This server is for development purposes only. It does not provide
the stability, security, or performance of production WSGI servers.
The reloader and debugger are enabled by default if
FLASK_ENV=development or FLASK_DEBUG=1.
"""
debug = get_debug_flag()
if reload is None:
reload = debug
if debugger is None:
debugger = debug
if eager_loading is None:
eager_loading = not reload
show_server_banner(get_env(), debug, info.app_import_path, eager_loading)
app = DispatchingApp(info.load_app, use_eager_loading=eager_loading)
from werkzeug.serving import run_simple
run_simple(
host,
port,
app,
use_reloader=reload,
use_debugger=debugger,
threaded=with_threads,
ssl_context=cert,
extra_files=extra_files,
)
@click.command("shell", short_help="Run a shell in the app context.")
@with_appcontext
def shell_command():
"""Run an interactive Python shell in the context of a given
Flask application. The application will populate the default
namespace of this shell according to it's configuration.
This is useful for executing small snippets of management code
without having to manually configure the application.
"""
import code
from .globals import _app_ctx_stack
app = _app_ctx_stack.top.app
banner = "Python %s on %s\nApp: %s [%s]\nInstance: %s" % (
sys.version,
sys.platform,
app.import_name,
app.env,
app.instance_path,
)
ctx = {}
# Support the regular Python interpreter startup script if someone
# is using it.
startup = os.environ.get("PYTHONSTARTUP")
if startup and os.path.isfile(startup):
with open(startup, "r") as f:
eval(compile(f.read(), startup, "exec"), ctx)
ctx.update(app.make_shell_context())
code.interact(banner=banner, local=ctx)
@click.command("routes", short_help="Show the routes for the app.")
@click.option(
"--sort",
"-s",
type=click.Choice(("endpoint", "methods", "rule", "match")),
default="endpoint",
help=(
'Method to sort routes by. "match" is the order that Flask will match '
"routes when dispatching a request."
),
)
@click.option("--all-methods", is_flag=True, help="Show HEAD and OPTIONS methods.")
@with_appcontext
def routes_command(sort, all_methods):
"""Show all registered routes with endpoints and methods."""
rules = list(current_app.url_map.iter_rules())
if not rules:
click.echo("No routes were registered.")
return
ignored_methods = set(() if all_methods else ("HEAD", "OPTIONS"))
if sort in ("endpoint", "rule"):
rules = sorted(rules, key=attrgetter(sort))
elif sort == "methods":
rules = sorted(rules, key=lambda rule: sorted(rule.methods))
rule_methods = [", ".join(sorted(rule.methods - ignored_methods)) for rule in rules]
headers = ("Endpoint", "Methods", "Rule")
widths = (
max(len(rule.endpoint) for rule in rules),
max(len(methods) for methods in rule_methods),
max(len(rule.rule) for rule in rules),
)
widths = [max(len(h), w) for h, w in zip(headers, widths)]
row = "{{0:<{0}}} {{1:<{1}}} {{2:<{2}}}".format(*widths)
click.echo(row.format(*headers).strip())
click.echo(row.format(*("-" * width for width in widths)))
for rule, methods in zip(rules, rule_methods):
click.echo(row.format(rule.endpoint, methods, rule.rule).rstrip())
cli = FlaskGroup(
help="""\
A general utility script for Flask applications.
Provides commands from Flask, extensions, and the application. Loads the
application defined in the FLASK_APP environment variable, or from a wsgi.py
file. Setting the FLASK_ENV environment variable to 'development' will enable
debug mode.
\b
{prefix}{cmd} FLASK_APP=hello.py
{prefix}{cmd} FLASK_ENV=development
{prefix}flask run
""".format(
cmd="export" if os.name == "posix" else "set",
prefix="$ " if os.name == "posix" else "> ",
)
)
def main(as_module=False):
# TODO omit sys.argv once https://github.com/pallets/click/issues/536 is fixed
cli.main(args=sys.argv[1:], prog_name="python -m flask" if as_module else None)
if __name__ == "__main__":
main(as_module=True)
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/flask/wrappers.py
|
# -*- coding: utf-8 -*-
"""
flask.wrappers
~~~~~~~~~~~~~~
Implements the WSGI wrappers (request and response).
:copyright: 2010 Pallets
:license: BSD-3-Clause
"""
from werkzeug.exceptions import BadRequest
from werkzeug.wrappers import Request as RequestBase
from werkzeug.wrappers import Response as ResponseBase
from werkzeug.wrappers.json import JSONMixin as _JSONMixin
from . import json
from .globals import current_app
class JSONMixin(_JSONMixin):
json_module = json
def on_json_loading_failed(self, e):
if current_app and current_app.debug:
raise BadRequest("Failed to decode JSON object: {0}".format(e))
raise BadRequest()
class Request(RequestBase, JSONMixin):
"""The request object used by default in Flask. Remembers the
matched endpoint and view arguments.
It is what ends up as :class:`~flask.request`. If you want to replace
the request object used you can subclass this and set
:attr:`~flask.Flask.request_class` to your subclass.
The request object is a :class:`~werkzeug.wrappers.Request` subclass and
provides all of the attributes Werkzeug defines plus a few Flask
specific ones.
"""
#: The internal URL rule that matched the request. This can be
#: useful to inspect which methods are allowed for the URL from
#: a before/after handler (``request.url_rule.methods``) etc.
#: Though if the request's method was invalid for the URL rule,
#: the valid list is available in ``routing_exception.valid_methods``
#: instead (an attribute of the Werkzeug exception
#: :exc:`~werkzeug.exceptions.MethodNotAllowed`)
#: because the request was never internally bound.
#:
#: .. versionadded:: 0.6
url_rule = None
#: A dict of view arguments that matched the request. If an exception
#: happened when matching, this will be ``None``.
view_args = None
#: If matching the URL failed, this is the exception that will be
#: raised / was raised as part of the request handling. This is
#: usually a :exc:`~werkzeug.exceptions.NotFound` exception or
#: something similar.
routing_exception = None
@property
def max_content_length(self):
"""Read-only view of the ``MAX_CONTENT_LENGTH`` config key."""
if current_app:
return current_app.config["MAX_CONTENT_LENGTH"]
@property
def endpoint(self):
"""The endpoint that matched the request. This in combination with
:attr:`view_args` can be used to reconstruct the same or a
modified URL. If an exception happened when matching, this will
be ``None``.
"""
if self.url_rule is not None:
return self.url_rule.endpoint
@property
def blueprint(self):
"""The name of the current blueprint"""
if self.url_rule and "." in self.url_rule.endpoint:
return self.url_rule.endpoint.rsplit(".", 1)[0]
def _load_form_data(self):
RequestBase._load_form_data(self)
# In debug mode we're replacing the files multidict with an ad-hoc
# subclass that raises a different error for key errors.
if (
current_app
and current_app.debug
and self.mimetype != "multipart/form-data"
and not self.files
):
from .debughelpers import attach_enctype_error_multidict
attach_enctype_error_multidict(self)
class Response(ResponseBase, JSONMixin):
"""The response object that is used by default in Flask. Works like the
response object from Werkzeug but is set to have an HTML mimetype by
default. Quite often you don't have to create this object yourself because
:meth:`~flask.Flask.make_response` will take care of that for you.
If you want to replace the response object used you can subclass this and
set :attr:`~flask.Flask.response_class` to your subclass.
.. versionchanged:: 1.0
JSON support is added to the response, like the request. This is useful
when testing to get the test client response data as JSON.
.. versionchanged:: 1.0
Added :attr:`max_cookie_size`.
"""
default_mimetype = "text/html"
def _get_data_for_json(self, cache):
return self.get_data()
@property
def max_cookie_size(self):
"""Read-only view of the :data:`MAX_COOKIE_SIZE` config key.
See :attr:`~werkzeug.wrappers.BaseResponse.max_cookie_size` in
Werkzeug's docs.
"""
if current_app:
return current_app.config["MAX_COOKIE_SIZE"]
# return Werkzeug's default when not in an app context
return super(Response, self).max_cookie_size
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/flask/app.py
|
# -*- coding: utf-8 -*-
"""
flask.app
~~~~~~~~~
This module implements the central WSGI application object.
:copyright: 2010 Pallets
:license: BSD-3-Clause
"""
import os
import sys
import warnings
from datetime import timedelta
from functools import update_wrapper
from itertools import chain
from threading import Lock
from werkzeug.datastructures import Headers
from werkzeug.datastructures import ImmutableDict
from werkzeug.exceptions import BadRequest
from werkzeug.exceptions import BadRequestKeyError
from werkzeug.exceptions import default_exceptions
from werkzeug.exceptions import HTTPException
from werkzeug.exceptions import InternalServerError
from werkzeug.exceptions import MethodNotAllowed
from werkzeug.routing import BuildError
from werkzeug.routing import Map
from werkzeug.routing import RequestRedirect
from werkzeug.routing import RoutingException
from werkzeug.routing import Rule
from werkzeug.wrappers import BaseResponse
from . import cli
from . import json
from ._compat import integer_types
from ._compat import reraise
from ._compat import string_types
from ._compat import text_type
from .config import Config
from .config import ConfigAttribute
from .ctx import _AppCtxGlobals
from .ctx import AppContext
from .ctx import RequestContext
from .globals import _request_ctx_stack
from .globals import g
from .globals import request
from .globals import session
from .helpers import _endpoint_from_view_func
from .helpers import _PackageBoundObject
from .helpers import find_package
from .helpers import get_debug_flag
from .helpers import get_env
from .helpers import get_flashed_messages
from .helpers import get_load_dotenv
from .helpers import locked_cached_property
from .helpers import url_for
from .json import jsonify
from .logging import create_logger
from .sessions import SecureCookieSessionInterface
from .signals import appcontext_tearing_down
from .signals import got_request_exception
from .signals import request_finished
from .signals import request_started
from .signals import request_tearing_down
from .templating import _default_template_ctx_processor
from .templating import DispatchingJinjaLoader
from .templating import Environment
from .wrappers import Request
from .wrappers import Response
# a singleton sentinel value for parameter defaults
_sentinel = object()
def _make_timedelta(value):
if not isinstance(value, timedelta):
return timedelta(seconds=value)
return value
def setupmethod(f):
"""Wraps a method so that it performs a check in debug mode if the
first request was already handled.
"""
def wrapper_func(self, *args, **kwargs):
if self.debug and self._got_first_request:
raise AssertionError(
"A setup function was called after the "
"first request was handled. This usually indicates a bug "
"in the application where a module was not imported "
"and decorators or other functionality was called too late.\n"
"To fix this make sure to import all your view modules, "
"database models and everything related at a central place "
"before the application starts serving requests."
)
return f(self, *args, **kwargs)
return update_wrapper(wrapper_func, f)
class Flask(_PackageBoundObject):
"""The flask object implements a WSGI application and acts as the central
object. It is passed the name of the module or package of the
application. Once it is created it will act as a central registry for
the view functions, the URL rules, template configuration and much more.
The name of the package is used to resolve resources from inside the
package or the folder the module is contained in depending on if the
package parameter resolves to an actual python package (a folder with
an :file:`__init__.py` file inside) or a standard module (just a ``.py`` file).
For more information about resource loading, see :func:`open_resource`.
Usually you create a :class:`Flask` instance in your main module or
in the :file:`__init__.py` file of your package like this::
from flask import Flask
app = Flask(__name__)
.. admonition:: About the First Parameter
The idea of the first parameter is to give Flask an idea of what
belongs to your application. This name is used to find resources
on the filesystem, can be used by extensions to improve debugging
information and a lot more.
So it's important what you provide there. If you are using a single
module, `__name__` is always the correct value. If you however are
using a package, it's usually recommended to hardcode the name of
your package there.
For example if your application is defined in :file:`yourapplication/app.py`
you should create it with one of the two versions below::
app = Flask('yourapplication')
app = Flask(__name__.split('.')[0])
Why is that? The application will work even with `__name__`, thanks
to how resources are looked up. However it will make debugging more
painful. Certain extensions can make assumptions based on the
import name of your application. For example the Flask-SQLAlchemy
extension will look for the code in your application that triggered
an SQL query in debug mode. If the import name is not properly set
up, that debugging information is lost. (For example it would only
pick up SQL queries in `yourapplication.app` and not
`yourapplication.views.frontend`)
.. versionadded:: 0.7
The `static_url_path`, `static_folder`, and `template_folder`
parameters were added.
.. versionadded:: 0.8
The `instance_path` and `instance_relative_config` parameters were
added.
.. versionadded:: 0.11
The `root_path` parameter was added.
.. versionadded:: 1.0
The ``host_matching`` and ``static_host`` parameters were added.
.. versionadded:: 1.0
The ``subdomain_matching`` parameter was added. Subdomain
matching needs to be enabled manually now. Setting
:data:`SERVER_NAME` does not implicitly enable it.
:param import_name: the name of the application package
:param static_url_path: can be used to specify a different path for the
static files on the web. Defaults to the name
of the `static_folder` folder.
:param static_folder: The folder with static files that is served at
``static_url_path``. Relative to the application ``root_path``
or an absolute path. Defaults to ``'static'``.
:param static_host: the host to use when adding the static route.
Defaults to None. Required when using ``host_matching=True``
with a ``static_folder`` configured.
:param host_matching: set ``url_map.host_matching`` attribute.
Defaults to False.
:param subdomain_matching: consider the subdomain relative to
:data:`SERVER_NAME` when matching routes. Defaults to False.
:param template_folder: the folder that contains the templates that should
be used by the application. Defaults to
``'templates'`` folder in the root path of the
application.
:param instance_path: An alternative instance path for the application.
By default the folder ``'instance'`` next to the
package or module is assumed to be the instance
path.
:param instance_relative_config: if set to ``True`` relative filenames
for loading the config are assumed to
be relative to the instance path instead
of the application root.
:param root_path: Flask by default will automatically calculate the path
to the root of the application. In certain situations
this cannot be achieved (for instance if the package
is a Python 3 namespace package) and needs to be
manually defined.
"""
#: The class that is used for request objects. See :class:`~flask.Request`
#: for more information.
request_class = Request
#: The class that is used for response objects. See
#: :class:`~flask.Response` for more information.
response_class = Response
#: The class that is used for the Jinja environment.
#:
#: .. versionadded:: 0.11
jinja_environment = Environment
#: The class that is used for the :data:`~flask.g` instance.
#:
#: Example use cases for a custom class:
#:
#: 1. Store arbitrary attributes on flask.g.
#: 2. Add a property for lazy per-request database connectors.
#: 3. Return None instead of AttributeError on unexpected attributes.
#: 4. Raise exception if an unexpected attr is set, a "controlled" flask.g.
#:
#: In Flask 0.9 this property was called `request_globals_class` but it
#: was changed in 0.10 to :attr:`app_ctx_globals_class` because the
#: flask.g object is now application context scoped.
#:
#: .. versionadded:: 0.10
app_ctx_globals_class = _AppCtxGlobals
#: The class that is used for the ``config`` attribute of this app.
#: Defaults to :class:`~flask.Config`.
#:
#: Example use cases for a custom class:
#:
#: 1. Default values for certain config options.
#: 2. Access to config values through attributes in addition to keys.
#:
#: .. versionadded:: 0.11
config_class = Config
#: The testing flag. Set this to ``True`` to enable the test mode of
#: Flask extensions (and in the future probably also Flask itself).
#: For example this might activate test helpers that have an
#: additional runtime cost which should not be enabled by default.
#:
#: If this is enabled and PROPAGATE_EXCEPTIONS is not changed from the
#: default it's implicitly enabled.
#:
#: This attribute can also be configured from the config with the
#: ``TESTING`` configuration key. Defaults to ``False``.
testing = ConfigAttribute("TESTING")
#: If a secret key is set, cryptographic components can use this to
#: sign cookies and other things. Set this to a complex random value
#: when you want to use the secure cookie for instance.
#:
#: This attribute can also be configured from the config with the
#: :data:`SECRET_KEY` configuration key. Defaults to ``None``.
secret_key = ConfigAttribute("SECRET_KEY")
#: The secure cookie uses this for the name of the session cookie.
#:
#: This attribute can also be configured from the config with the
#: ``SESSION_COOKIE_NAME`` configuration key. Defaults to ``'session'``
session_cookie_name = ConfigAttribute("SESSION_COOKIE_NAME")
#: A :class:`~datetime.timedelta` which is used to set the expiration
#: date of a permanent session. The default is 31 days which makes a
#: permanent session survive for roughly one month.
#:
#: This attribute can also be configured from the config with the
#: ``PERMANENT_SESSION_LIFETIME`` configuration key. Defaults to
#: ``timedelta(days=31)``
permanent_session_lifetime = ConfigAttribute(
"PERMANENT_SESSION_LIFETIME", get_converter=_make_timedelta
)
#: A :class:`~datetime.timedelta` which is used as default cache_timeout
#: for the :func:`send_file` functions. The default is 12 hours.
#:
#: This attribute can also be configured from the config with the
#: ``SEND_FILE_MAX_AGE_DEFAULT`` configuration key. This configuration
#: variable can also be set with an integer value used as seconds.
#: Defaults to ``timedelta(hours=12)``
send_file_max_age_default = ConfigAttribute(
"SEND_FILE_MAX_AGE_DEFAULT", get_converter=_make_timedelta
)
#: Enable this if you want to use the X-Sendfile feature. Keep in
#: mind that the server has to support this. This only affects files
#: sent with the :func:`send_file` method.
#:
#: .. versionadded:: 0.2
#:
#: This attribute can also be configured from the config with the
#: ``USE_X_SENDFILE`` configuration key. Defaults to ``False``.
use_x_sendfile = ConfigAttribute("USE_X_SENDFILE")
#: The JSON encoder class to use. Defaults to :class:`~flask.json.JSONEncoder`.
#:
#: .. versionadded:: 0.10
json_encoder = json.JSONEncoder
#: The JSON decoder class to use. Defaults to :class:`~flask.json.JSONDecoder`.
#:
#: .. versionadded:: 0.10
json_decoder = json.JSONDecoder
#: Options that are passed to the Jinja environment in
#: :meth:`create_jinja_environment`. Changing these options after
#: the environment is created (accessing :attr:`jinja_env`) will
#: have no effect.
#:
#: .. versionchanged:: 1.1.0
#: This is a ``dict`` instead of an ``ImmutableDict`` to allow
#: easier configuration.
#:
jinja_options = {"extensions": ["jinja2.ext.autoescape", "jinja2.ext.with_"]}
#: Default configuration parameters.
default_config = ImmutableDict(
{
"ENV": None,
"DEBUG": None,
"TESTING": False,
"PROPAGATE_EXCEPTIONS": None,
"PRESERVE_CONTEXT_ON_EXCEPTION": None,
"SECRET_KEY": None,
"PERMANENT_SESSION_LIFETIME": timedelta(days=31),
"USE_X_SENDFILE": False,
"SERVER_NAME": None,
"APPLICATION_ROOT": "/",
"SESSION_COOKIE_NAME": "session",
"SESSION_COOKIE_DOMAIN": None,
"SESSION_COOKIE_PATH": None,
"SESSION_COOKIE_HTTPONLY": True,
"SESSION_COOKIE_SECURE": False,
"SESSION_COOKIE_SAMESITE": None,
"SESSION_REFRESH_EACH_REQUEST": True,
"MAX_CONTENT_LENGTH": None,
"SEND_FILE_MAX_AGE_DEFAULT": timedelta(hours=12),
"TRAP_BAD_REQUEST_ERRORS": None,
"TRAP_HTTP_EXCEPTIONS": False,
"EXPLAIN_TEMPLATE_LOADING": False,
"PREFERRED_URL_SCHEME": "http",
"JSON_AS_ASCII": True,
"JSON_SORT_KEYS": True,
"JSONIFY_PRETTYPRINT_REGULAR": False,
"JSONIFY_MIMETYPE": "application/json",
"TEMPLATES_AUTO_RELOAD": None,
"MAX_COOKIE_SIZE": 4093,
}
)
#: The rule object to use for URL rules created. This is used by
#: :meth:`add_url_rule`. Defaults to :class:`werkzeug.routing.Rule`.
#:
#: .. versionadded:: 0.7
url_rule_class = Rule
#: The map object to use for storing the URL rules and routing
#: configuration parameters. Defaults to :class:`werkzeug.routing.Map`.
#:
#: .. versionadded:: 1.1.0
url_map_class = Map
#: the test client that is used with when `test_client` is used.
#:
#: .. versionadded:: 0.7
test_client_class = None
#: The :class:`~click.testing.CliRunner` subclass, by default
#: :class:`~flask.testing.FlaskCliRunner` that is used by
#: :meth:`test_cli_runner`. Its ``__init__`` method should take a
#: Flask app object as the first argument.
#:
#: .. versionadded:: 1.0
test_cli_runner_class = None
#: the session interface to use. By default an instance of
#: :class:`~flask.sessions.SecureCookieSessionInterface` is used here.
#:
#: .. versionadded:: 0.8
session_interface = SecureCookieSessionInterface()
# TODO remove the next three attrs when Sphinx :inherited-members: works
# https://github.com/sphinx-doc/sphinx/issues/741
#: The name of the package or module that this app belongs to. Do not
#: change this once it is set by the constructor.
import_name = None
#: Location of the template files to be added to the template lookup.
#: ``None`` if templates should not be added.
template_folder = None
#: Absolute path to the package on the filesystem. Used to look up
#: resources contained in the package.
root_path = None
def __init__(
self,
import_name,
static_url_path=None,
static_folder="static",
static_host=None,
host_matching=False,
subdomain_matching=False,
template_folder="templates",
instance_path=None,
instance_relative_config=False,
root_path=None,
):
_PackageBoundObject.__init__(
self, import_name, template_folder=template_folder, root_path=root_path
)
self.static_url_path = static_url_path
self.static_folder = static_folder
if instance_path is None:
instance_path = self.auto_find_instance_path()
elif not os.path.isabs(instance_path):
raise ValueError(
"If an instance path is provided it must be absolute."
" A relative path was given instead."
)
#: Holds the path to the instance folder.
#:
#: .. versionadded:: 0.8
self.instance_path = instance_path
#: The configuration dictionary as :class:`Config`. This behaves
#: exactly like a regular dictionary but supports additional methods
#: to load a config from files.
self.config = self.make_config(instance_relative_config)
#: A dictionary of all view functions registered. The keys will
#: be function names which are also used to generate URLs and
#: the values are the function objects themselves.
#: To register a view function, use the :meth:`route` decorator.
self.view_functions = {}
#: A dictionary of all registered error handlers. The key is ``None``
#: for error handlers active on the application, otherwise the key is
#: the name of the blueprint. Each key points to another dictionary
#: where the key is the status code of the http exception. The
#: special key ``None`` points to a list of tuples where the first item
#: is the class for the instance check and the second the error handler
#: function.
#:
#: To register an error handler, use the :meth:`errorhandler`
#: decorator.
self.error_handler_spec = {}
#: A list of functions that are called when :meth:`url_for` raises a
#: :exc:`~werkzeug.routing.BuildError`. Each function registered here
#: is called with `error`, `endpoint` and `values`. If a function
#: returns ``None`` or raises a :exc:`BuildError` the next function is
#: tried.
#:
#: .. versionadded:: 0.9
self.url_build_error_handlers = []
#: A dictionary with lists of functions that will be called at the
#: beginning of each request. The key of the dictionary is the name of
#: the blueprint this function is active for, or ``None`` for all
#: requests. To register a function, use the :meth:`before_request`
#: decorator.
self.before_request_funcs = {}
#: A list of functions that will be called at the beginning of the
#: first request to this instance. To register a function, use the
#: :meth:`before_first_request` decorator.
#:
#: .. versionadded:: 0.8
self.before_first_request_funcs = []
#: A dictionary with lists of functions that should be called after
#: each request. The key of the dictionary is the name of the blueprint
#: this function is active for, ``None`` for all requests. This can for
#: example be used to close database connections. To register a function
#: here, use the :meth:`after_request` decorator.
self.after_request_funcs = {}
#: A dictionary with lists of functions that are called after
#: each request, even if an exception has occurred. The key of the
#: dictionary is the name of the blueprint this function is active for,
#: ``None`` for all requests. These functions are not allowed to modify
#: the request, and their return values are ignored. If an exception
#: occurred while processing the request, it gets passed to each
#: teardown_request function. To register a function here, use the
#: :meth:`teardown_request` decorator.
#:
#: .. versionadded:: 0.7
self.teardown_request_funcs = {}
#: A list of functions that are called when the application context
#: is destroyed. Since the application context is also torn down
#: if the request ends this is the place to store code that disconnects
#: from databases.
#:
#: .. versionadded:: 0.9
self.teardown_appcontext_funcs = []
#: A dictionary with lists of functions that are called before the
#: :attr:`before_request_funcs` functions. The key of the dictionary is
#: the name of the blueprint this function is active for, or ``None``
#: for all requests. To register a function, use
#: :meth:`url_value_preprocessor`.
#:
#: .. versionadded:: 0.7
self.url_value_preprocessors = {}
#: A dictionary with lists of functions that can be used as URL value
#: preprocessors. The key ``None`` here is used for application wide
#: callbacks, otherwise the key is the name of the blueprint.
#: Each of these functions has the chance to modify the dictionary
#: of URL values before they are used as the keyword arguments of the
#: view function. For each function registered this one should also
#: provide a :meth:`url_defaults` function that adds the parameters
#: automatically again that were removed that way.
#:
#: .. versionadded:: 0.7
self.url_default_functions = {}
#: A dictionary with list of functions that are called without argument
#: to populate the template context. The key of the dictionary is the
#: name of the blueprint this function is active for, ``None`` for all
#: requests. Each returns a dictionary that the template context is
#: updated with. To register a function here, use the
#: :meth:`context_processor` decorator.
self.template_context_processors = {None: [_default_template_ctx_processor]}
#: A list of shell context processor functions that should be run
#: when a shell context is created.
#:
#: .. versionadded:: 0.11
self.shell_context_processors = []
#: all the attached blueprints in a dictionary by name. Blueprints
#: can be attached multiple times so this dictionary does not tell
#: you how often they got attached.
#:
#: .. versionadded:: 0.7
self.blueprints = {}
self._blueprint_order = []
#: a place where extensions can store application specific state. For
#: example this is where an extension could store database engines and
#: similar things. For backwards compatibility extensions should register
#: themselves like this::
#:
#: if not hasattr(app, 'extensions'):
#: app.extensions = {}
#: app.extensions['extensionname'] = SomeObject()
#:
#: The key must match the name of the extension module. For example in
#: case of a "Flask-Foo" extension in `flask_foo`, the key would be
#: ``'foo'``.
#:
#: .. versionadded:: 0.7
self.extensions = {}
#: The :class:`~werkzeug.routing.Map` for this instance. You can use
#: this to change the routing converters after the class was created
#: but before any routes are connected. Example::
#:
#: from werkzeug.routing import BaseConverter
#:
#: class ListConverter(BaseConverter):
#: def to_python(self, value):
#: return value.split(',')
#: def to_url(self, values):
#: return ','.join(super(ListConverter, self).to_url(value)
#: for value in values)
#:
#: app = Flask(__name__)
#: app.url_map.converters['list'] = ListConverter
self.url_map = self.url_map_class()
self.url_map.host_matching = host_matching
self.subdomain_matching = subdomain_matching
# tracks internally if the application already handled at least one
# request.
self._got_first_request = False
self._before_request_lock = Lock()
# Add a static route using the provided static_url_path, static_host,
# and static_folder if there is a configured static_folder.
# Note we do this without checking if static_folder exists.
# For one, it might be created while the server is running (e.g. during
# development). Also, Google App Engine stores static files somewhere
if self.has_static_folder:
assert (
bool(static_host) == host_matching
), "Invalid static_host/host_matching combination"
self.add_url_rule(
self.static_url_path + "/<path:filename>",
endpoint="static",
host=static_host,
view_func=self.send_static_file,
)
# Set the name of the Click group in case someone wants to add
# the app's commands to another CLI tool.
self.cli.name = self.name
@locked_cached_property
def name(self):
"""The name of the application. This is usually the import name
with the difference that it's guessed from the run file if the
import name is main. This name is used as a display name when
Flask needs the name of the application. It can be set and overridden
to change the value.
.. versionadded:: 0.8
"""
if self.import_name == "__main__":
fn = getattr(sys.modules["__main__"], "__file__", None)
if fn is None:
return "__main__"
return os.path.splitext(os.path.basename(fn))[0]
return self.import_name
@property
def propagate_exceptions(self):
"""Returns the value of the ``PROPAGATE_EXCEPTIONS`` configuration
value in case it's set, otherwise a sensible default is returned.
.. versionadded:: 0.7
"""
rv = self.config["PROPAGATE_EXCEPTIONS"]
if rv is not None:
return rv
return self.testing or self.debug
@property
def preserve_context_on_exception(self):
"""Returns the value of the ``PRESERVE_CONTEXT_ON_EXCEPTION``
configuration value in case it's set, otherwise a sensible default
is returned.
.. versionadded:: 0.7
"""
rv = self.config["PRESERVE_CONTEXT_ON_EXCEPTION"]
if rv is not None:
return rv
return self.debug
@locked_cached_property
def logger(self):
"""A standard Python :class:`~logging.Logger` for the app, with
the same name as :attr:`name`.
In debug mode, the logger's :attr:`~logging.Logger.level` will
be set to :data:`~logging.DEBUG`.
If there are no handlers configured, a default handler will be
added. See :doc:`/logging` for more information.
.. versionchanged:: 1.1.0
The logger takes the same name as :attr:`name` rather than
hard-coding ``"flask.app"``.
.. versionchanged:: 1.0.0
Behavior was simplified. The logger is always named
``"flask.app"``. The level is only set during configuration,
it doesn't check ``app.debug`` each time. Only one format is
used, not different ones depending on ``app.debug``. No
handlers are removed, and a handler is only added if no
handlers are already configured.
.. versionadded:: 0.3
"""
return create_logger(self)
@locked_cached_property
def jinja_env(self):
"""The Jinja environment used to load templates.
The environment is created the first time this property is
accessed. Changing :attr:`jinja_options` after that will have no
effect.
"""
return self.create_jinja_environment()
@property
def got_first_request(self):
"""This attribute is set to ``True`` if the application started
handling the first request.
.. versionadded:: 0.8
"""
return self._got_first_request
def make_config(self, instance_relative=False):
"""Used to create the config attribute by the Flask constructor.
The `instance_relative` parameter is passed in from the constructor
of Flask (there named `instance_relative_config`) and indicates if
the config should be relative to the instance path or the root path
of the application.
.. versionadded:: 0.8
"""
root_path = self.root_path
if instance_relative:
root_path = self.instance_path
defaults = dict(self.default_config)
defaults["ENV"] = get_env()
defaults["DEBUG"] = get_debug_flag()
return self.config_class(root_path, defaults)
def auto_find_instance_path(self):
"""Tries to locate the instance path if it was not provided to the
constructor of the application class. It will basically calculate
the path to a folder named ``instance`` next to your main file or
the package.
.. versionadded:: 0.8
"""
prefix, package_path = find_package(self.import_name)
if prefix is None:
return os.path.join(package_path, "instance")
return os.path.join(prefix, "var", self.name + "-instance")
def open_instance_resource(self, resource, mode="rb"):
"""Opens a resource from the application's instance folder
(:attr:`instance_path`). Otherwise works like
:meth:`open_resource`. Instance resources can also be opened for
writing.
:param resource: the name of the resource. To access resources within
subfolders use forward slashes as separator.
:param mode: resource file opening mode, default is 'rb'.
"""
return open(os.path.join(self.instance_path, resource), mode)
@property
def templates_auto_reload(self):
"""Reload templates when they are changed. Used by
:meth:`create_jinja_environment`.
This attribute can be configured with :data:`TEMPLATES_AUTO_RELOAD`. If
not set, it will be enabled in debug mode.
.. versionadded:: 1.0
This property was added but the underlying config and behavior
already existed.
"""
rv = self.config["TEMPLATES_AUTO_RELOAD"]
return rv if rv is not None else self.debug
@templates_auto_reload.setter
def templates_auto_reload(self, value):
self.config["TEMPLATES_AUTO_RELOAD"] = value
def create_jinja_environment(self):
"""Create the Jinja environment based on :attr:`jinja_options`
and the various Jinja-related methods of the app. Changing
:attr:`jinja_options` after this will have no effect. Also adds
Flask-related globals and filters to the environment.
.. versionchanged:: 0.11
``Environment.auto_reload`` set in accordance with
``TEMPLATES_AUTO_RELOAD`` configuration option.
.. versionadded:: 0.5
"""
options = dict(self.jinja_options)
if "autoescape" not in options:
options["autoescape"] = self.select_jinja_autoescape
if "auto_reload" not in options:
options["auto_reload"] = self.templates_auto_reload
rv = self.jinja_environment(self, **options)
rv.globals.update(
url_for=url_for,
get_flashed_messages=get_flashed_messages,
config=self.config,
# request, session and g are normally added with the
# context processor for efficiency reasons but for imported
# templates we also want the proxies in there.
request=request,
session=session,
g=g,
)
rv.filters["tojson"] = json.tojson_filter
return rv
def create_global_jinja_loader(self):
"""Creates the loader for the Jinja2 environment. Can be used to
override just the loader and keeping the rest unchanged. It's
discouraged to override this function. Instead one should override
the :meth:`jinja_loader` function instead.
The global loader dispatches between the loaders of the application
and the individual blueprints.
.. versionadded:: 0.7
"""
return DispatchingJinjaLoader(self)
def select_jinja_autoescape(self, filename):
"""Returns ``True`` if autoescaping should be active for the given
template name. If no template name is given, returns `True`.
.. versionadded:: 0.5
"""
if filename is None:
return True
return filename.endswith((".html", ".htm", ".xml", ".xhtml"))
def update_template_context(self, context):
"""Update the template context with some commonly used variables.
This injects request, session, config and g into the template
context as well as everything template context processors want
to inject. Note that the as of Flask 0.6, the original values
in the context will not be overridden if a context processor
decides to return a value with the same key.
:param context: the context as a dictionary that is updated in place
to add extra variables.
"""
funcs = self.template_context_processors[None]
reqctx = _request_ctx_stack.top
if reqctx is not None:
bp = reqctx.request.blueprint
if bp is not None and bp in self.template_context_processors:
funcs = chain(funcs, self.template_context_processors[bp])
orig_ctx = context.copy()
for func in funcs:
context.update(func())
# make sure the original values win. This makes it possible to
# easier add new variables in context processors without breaking
# existing views.
context.update(orig_ctx)
def make_shell_context(self):
"""Returns the shell context for an interactive shell for this
application. This runs all the registered shell context
processors.
.. versionadded:: 0.11
"""
rv = {"app": self, "g": g}
for processor in self.shell_context_processors:
rv.update(processor())
return rv
#: What environment the app is running in. Flask and extensions may
#: enable behaviors based on the environment, such as enabling debug
#: mode. This maps to the :data:`ENV` config key. This is set by the
#: :envvar:`FLASK_ENV` environment variable and may not behave as
#: expected if set in code.
#:
#: **Do not enable development when deploying in production.**
#:
#: Default: ``'production'``
env = ConfigAttribute("ENV")
@property
def debug(self):
"""Whether debug mode is enabled. When using ``flask run`` to start
the development server, an interactive debugger will be shown for
unhandled exceptions, and the server will be reloaded when code
changes. This maps to the :data:`DEBUG` config key. This is
enabled when :attr:`env` is ``'development'`` and is overridden
by the ``FLASK_DEBUG`` environment variable. It may not behave as
expected if set in code.
**Do not enable debug mode when deploying in production.**
Default: ``True`` if :attr:`env` is ``'development'``, or
``False`` otherwise.
"""
return self.config["DEBUG"]
@debug.setter
def debug(self, value):
self.config["DEBUG"] = value
self.jinja_env.auto_reload = self.templates_auto_reload
def run(self, host=None, port=None, debug=None, load_dotenv=True, **options):
"""Runs the application on a local development server.
Do not use ``run()`` in a production setting. It is not intended to
meet security and performance requirements for a production server.
Instead, see :ref:`deployment` for WSGI server recommendations.
If the :attr:`debug` flag is set the server will automatically reload
for code changes and show a debugger in case an exception happened.
If you want to run the application in debug mode, but disable the
code execution on the interactive debugger, you can pass
``use_evalex=False`` as parameter. This will keep the debugger's
traceback screen active, but disable code execution.
It is not recommended to use this function for development with
automatic reloading as this is badly supported. Instead you should
be using the :command:`flask` command line script's ``run`` support.
.. admonition:: Keep in Mind
Flask will suppress any server error with a generic error page
unless it is in debug mode. As such to enable just the
interactive debugger without the code reloading, you have to
invoke :meth:`run` with ``debug=True`` and ``use_reloader=False``.
Setting ``use_debugger`` to ``True`` without being in debug mode
won't catch any exceptions because there won't be any to
catch.
:param host: the hostname to listen on. Set this to ``'0.0.0.0'`` to
have the server available externally as well. Defaults to
``'127.0.0.1'`` or the host in the ``SERVER_NAME`` config variable
if present.
:param port: the port of the webserver. Defaults to ``5000`` or the
port defined in the ``SERVER_NAME`` config variable if present.
:param debug: if given, enable or disable debug mode. See
:attr:`debug`.
:param load_dotenv: Load the nearest :file:`.env` and :file:`.flaskenv`
files to set environment variables. Will also change the working
directory to the directory containing the first file found.
:param options: the options to be forwarded to the underlying Werkzeug
server. See :func:`werkzeug.serving.run_simple` for more
information.
.. versionchanged:: 1.0
If installed, python-dotenv will be used to load environment
variables from :file:`.env` and :file:`.flaskenv` files.
If set, the :envvar:`FLASK_ENV` and :envvar:`FLASK_DEBUG`
environment variables will override :attr:`env` and
:attr:`debug`.
Threaded mode is enabled by default.
.. versionchanged:: 0.10
The default port is now picked from the ``SERVER_NAME``
variable.
"""
# Change this into a no-op if the server is invoked from the
# command line. Have a look at cli.py for more information.
if os.environ.get("FLASK_RUN_FROM_CLI") == "true":
from .debughelpers import explain_ignored_app_run
explain_ignored_app_run()
return
if get_load_dotenv(load_dotenv):
cli.load_dotenv()
# if set, let env vars override previous values
if "FLASK_ENV" in os.environ:
self.env = get_env()
self.debug = get_debug_flag()
elif "FLASK_DEBUG" in os.environ:
self.debug = get_debug_flag()
# debug passed to method overrides all other sources
if debug is not None:
self.debug = bool(debug)
_host = "127.0.0.1"
_port = 5000
server_name = self.config.get("SERVER_NAME")
sn_host, sn_port = None, None
if server_name:
sn_host, _, sn_port = server_name.partition(":")
host = host or sn_host or _host
# pick the first value that's not None (0 is allowed)
port = int(next((p for p in (port, sn_port) if p is not None), _port))
options.setdefault("use_reloader", self.debug)
options.setdefault("use_debugger", self.debug)
options.setdefault("threaded", True)
cli.show_server_banner(self.env, self.debug, self.name, False)
from werkzeug.serving import run_simple
try:
run_simple(host, port, self, **options)
finally:
# reset the first request information if the development server
# reset normally. This makes it possible to restart the server
# without reloader and that stuff from an interactive shell.
self._got_first_request = False
def test_client(self, use_cookies=True, **kwargs):
"""Creates a test client for this application. For information
about unit testing head over to :ref:`testing`.
Note that if you are testing for assertions or exceptions in your
application code, you must set ``app.testing = True`` in order for the
exceptions to propagate to the test client. Otherwise, the exception
will be handled by the application (not visible to the test client) and
the only indication of an AssertionError or other exception will be a
500 status code response to the test client. See the :attr:`testing`
attribute. For example::
app.testing = True
client = app.test_client()
The test client can be used in a ``with`` block to defer the closing down
of the context until the end of the ``with`` block. This is useful if
you want to access the context locals for testing::
with app.test_client() as c:
rv = c.get('/?vodka=42')
assert request.args['vodka'] == '42'
Additionally, you may pass optional keyword arguments that will then
be passed to the application's :attr:`test_client_class` constructor.
For example::
from flask.testing import FlaskClient
class CustomClient(FlaskClient):
def __init__(self, *args, **kwargs):
self._authentication = kwargs.pop("authentication")
super(CustomClient,self).__init__( *args, **kwargs)
app.test_client_class = CustomClient
client = app.test_client(authentication='Basic ....')
See :class:`~flask.testing.FlaskClient` for more information.
.. versionchanged:: 0.4
added support for ``with`` block usage for the client.
.. versionadded:: 0.7
The `use_cookies` parameter was added as well as the ability
to override the client to be used by setting the
:attr:`test_client_class` attribute.
.. versionchanged:: 0.11
Added `**kwargs` to support passing additional keyword arguments to
the constructor of :attr:`test_client_class`.
"""
cls = self.test_client_class
if cls is None:
from .testing import FlaskClient as cls
return cls(self, self.response_class, use_cookies=use_cookies, **kwargs)
def test_cli_runner(self, **kwargs):
"""Create a CLI runner for testing CLI commands.
See :ref:`testing-cli`.
Returns an instance of :attr:`test_cli_runner_class`, by default
:class:`~flask.testing.FlaskCliRunner`. The Flask app object is
passed as the first argument.
.. versionadded:: 1.0
"""
cls = self.test_cli_runner_class
if cls is None:
from .testing import FlaskCliRunner as cls
return cls(self, **kwargs)
def open_session(self, request):
"""Creates or opens a new session. Default implementation stores all
session data in a signed cookie. This requires that the
:attr:`secret_key` is set. Instead of overriding this method
we recommend replacing the :class:`session_interface`.
.. deprecated: 1.0
Will be removed in 2.0. Use
``session_interface.open_session`` instead.
:param request: an instance of :attr:`request_class`.
"""
warnings.warn(
DeprecationWarning(
'"open_session" is deprecated and will be removed in'
' 2.0. Use "session_interface.open_session" instead.'
)
)
return self.session_interface.open_session(self, request)
def save_session(self, session, response):
"""Saves the session if it needs updates. For the default
implementation, check :meth:`open_session`. Instead of overriding this
method we recommend replacing the :class:`session_interface`.
.. deprecated: 1.0
Will be removed in 2.0. Use
``session_interface.save_session`` instead.
:param session: the session to be saved (a
:class:`~werkzeug.contrib.securecookie.SecureCookie`
object)
:param response: an instance of :attr:`response_class`
"""
warnings.warn(
DeprecationWarning(
'"save_session" is deprecated and will be removed in'
' 2.0. Use "session_interface.save_session" instead.'
)
)
return self.session_interface.save_session(self, session, response)
def make_null_session(self):
"""Creates a new instance of a missing session. Instead of overriding
this method we recommend replacing the :class:`session_interface`.
.. deprecated: 1.0
Will be removed in 2.0. Use
``session_interface.make_null_session`` instead.
.. versionadded:: 0.7
"""
warnings.warn(
DeprecationWarning(
'"make_null_session" is deprecated and will be removed'
' in 2.0. Use "session_interface.make_null_session"'
" instead."
)
)
return self.session_interface.make_null_session(self)
@setupmethod
def register_blueprint(self, blueprint, **options):
"""Register a :class:`~flask.Blueprint` on the application. Keyword
arguments passed to this method will override the defaults set on the
blueprint.
Calls the blueprint's :meth:`~flask.Blueprint.register` method after
recording the blueprint in the application's :attr:`blueprints`.
:param blueprint: The blueprint to register.
:param url_prefix: Blueprint routes will be prefixed with this.
:param subdomain: Blueprint routes will match on this subdomain.
:param url_defaults: Blueprint routes will use these default values for
view arguments.
:param options: Additional keyword arguments are passed to
:class:`~flask.blueprints.BlueprintSetupState`. They can be
accessed in :meth:`~flask.Blueprint.record` callbacks.
.. versionadded:: 0.7
"""
first_registration = False
if blueprint.name in self.blueprints:
assert self.blueprints[blueprint.name] is blueprint, (
"A name collision occurred between blueprints %r and %r. Both"
' share the same name "%s". Blueprints that are created on the'
" fly need unique names."
% (blueprint, self.blueprints[blueprint.name], blueprint.name)
)
else:
self.blueprints[blueprint.name] = blueprint
self._blueprint_order.append(blueprint)
first_registration = True
blueprint.register(self, options, first_registration)
def iter_blueprints(self):
"""Iterates over all blueprints by the order they were registered.
.. versionadded:: 0.11
"""
return iter(self._blueprint_order)
@setupmethod
def add_url_rule(
self,
rule,
endpoint=None,
view_func=None,
provide_automatic_options=None,
**options
):
"""Connects a URL rule. Works exactly like the :meth:`route`
decorator. If a view_func is provided it will be registered with the
endpoint.
Basically this example::
@app.route('/')
def index():
pass
Is equivalent to the following::
def index():
pass
app.add_url_rule('/', 'index', index)
If the view_func is not provided you will need to connect the endpoint
to a view function like so::
app.view_functions['index'] = index
Internally :meth:`route` invokes :meth:`add_url_rule` so if you want
to customize the behavior via subclassing you only need to change
this method.
For more information refer to :ref:`url-route-registrations`.
.. versionchanged:: 0.2
`view_func` parameter added.
.. versionchanged:: 0.6
``OPTIONS`` is added automatically as method.
:param rule: the URL rule as string
:param endpoint: the endpoint for the registered URL rule. Flask
itself assumes the name of the view function as
endpoint
:param view_func: the function to call when serving a request to the
provided endpoint
:param provide_automatic_options: controls whether the ``OPTIONS``
method should be added automatically. This can also be controlled
by setting the ``view_func.provide_automatic_options = False``
before adding the rule.
:param options: the options to be forwarded to the underlying
:class:`~werkzeug.routing.Rule` object. A change
to Werkzeug is handling of method options. methods
is a list of methods this rule should be limited
to (``GET``, ``POST`` etc.). By default a rule
just listens for ``GET`` (and implicitly ``HEAD``).
Starting with Flask 0.6, ``OPTIONS`` is implicitly
added and handled by the standard request handling.
"""
if endpoint is None:
endpoint = _endpoint_from_view_func(view_func)
options["endpoint"] = endpoint
methods = options.pop("methods", None)
# if the methods are not given and the view_func object knows its
# methods we can use that instead. If neither exists, we go with
# a tuple of only ``GET`` as default.
if methods is None:
methods = getattr(view_func, "methods", None) or ("GET",)
if isinstance(methods, string_types):
raise TypeError(
"Allowed methods have to be iterables of strings, "
'for example: @app.route(..., methods=["POST"])'
)
methods = set(item.upper() for item in methods)
# Methods that should always be added
required_methods = set(getattr(view_func, "required_methods", ()))
# starting with Flask 0.8 the view_func object can disable and
# force-enable the automatic options handling.
if provide_automatic_options is None:
provide_automatic_options = getattr(
view_func, "provide_automatic_options", None
)
if provide_automatic_options is None:
if "OPTIONS" not in methods:
provide_automatic_options = True
required_methods.add("OPTIONS")
else:
provide_automatic_options = False
# Add the required methods now.
methods |= required_methods
rule = self.url_rule_class(rule, methods=methods, **options)
rule.provide_automatic_options = provide_automatic_options
self.url_map.add(rule)
if view_func is not None:
old_func = self.view_functions.get(endpoint)
if old_func is not None and old_func != view_func:
raise AssertionError(
"View function mapping is overwriting an "
"existing endpoint function: %s" % endpoint
)
self.view_functions[endpoint] = view_func
def route(self, rule, **options):
"""A decorator that is used to register a view function for a
given URL rule. This does the same thing as :meth:`add_url_rule`
but is intended for decorator usage::
@app.route('/')
def index():
return 'Hello World'
For more information refer to :ref:`url-route-registrations`.
:param rule: the URL rule as string
:param endpoint: the endpoint for the registered URL rule. Flask
itself assumes the name of the view function as
endpoint
:param options: the options to be forwarded to the underlying
:class:`~werkzeug.routing.Rule` object. A change
to Werkzeug is handling of method options. methods
is a list of methods this rule should be limited
to (``GET``, ``POST`` etc.). By default a rule
just listens for ``GET`` (and implicitly ``HEAD``).
Starting with Flask 0.6, ``OPTIONS`` is implicitly
added and handled by the standard request handling.
"""
def decorator(f):
endpoint = options.pop("endpoint", None)
self.add_url_rule(rule, endpoint, f, **options)
return f
return decorator
@setupmethod
def endpoint(self, endpoint):
"""A decorator to register a function as an endpoint.
Example::
@app.endpoint('example.endpoint')
def example():
return "example"
:param endpoint: the name of the endpoint
"""
def decorator(f):
self.view_functions[endpoint] = f
return f
return decorator
@staticmethod
def _get_exc_class_and_code(exc_class_or_code):
"""Get the exception class being handled. For HTTP status codes
or ``HTTPException`` subclasses, return both the exception and
status code.
:param exc_class_or_code: Any exception class, or an HTTP status
code as an integer.
"""
if isinstance(exc_class_or_code, integer_types):
exc_class = default_exceptions[exc_class_or_code]
else:
exc_class = exc_class_or_code
assert issubclass(exc_class, Exception)
if issubclass(exc_class, HTTPException):
return exc_class, exc_class.code
else:
return exc_class, None
@setupmethod
def errorhandler(self, code_or_exception):
"""Register a function to handle errors by code or exception class.
A decorator that is used to register a function given an
error code. Example::
@app.errorhandler(404)
def page_not_found(error):
return 'This page does not exist', 404
You can also register handlers for arbitrary exceptions::
@app.errorhandler(DatabaseError)
def special_exception_handler(error):
return 'Database connection failed', 500
.. versionadded:: 0.7
Use :meth:`register_error_handler` instead of modifying
:attr:`error_handler_spec` directly, for application wide error
handlers.
.. versionadded:: 0.7
One can now additionally also register custom exception types
that do not necessarily have to be a subclass of the
:class:`~werkzeug.exceptions.HTTPException` class.
:param code_or_exception: the code as integer for the handler, or
an arbitrary exception
"""
def decorator(f):
self._register_error_handler(None, code_or_exception, f)
return f
return decorator
@setupmethod
def register_error_handler(self, code_or_exception, f):
"""Alternative error attach function to the :meth:`errorhandler`
decorator that is more straightforward to use for non decorator
usage.
.. versionadded:: 0.7
"""
self._register_error_handler(None, code_or_exception, f)
@setupmethod
def _register_error_handler(self, key, code_or_exception, f):
"""
:type key: None|str
:type code_or_exception: int|T<=Exception
:type f: callable
"""
if isinstance(code_or_exception, HTTPException): # old broken behavior
raise ValueError(
"Tried to register a handler for an exception instance {0!r}."
" Handlers can only be registered for exception classes or"
" HTTP error codes.".format(code_or_exception)
)
try:
exc_class, code = self._get_exc_class_and_code(code_or_exception)
except KeyError:
raise KeyError(
"'{0}' is not a recognized HTTP error code. Use a subclass of"
" HTTPException with that code instead.".format(code_or_exception)
)
handlers = self.error_handler_spec.setdefault(key, {}).setdefault(code, {})
handlers[exc_class] = f
@setupmethod
def template_filter(self, name=None):
"""A decorator that is used to register custom template filter.
You can specify a name for the filter, otherwise the function
name will be used. Example::
@app.template_filter()
def reverse(s):
return s[::-1]
:param name: the optional name of the filter, otherwise the
function name will be used.
"""
def decorator(f):
self.add_template_filter(f, name=name)
return f
return decorator
@setupmethod
def add_template_filter(self, f, name=None):
"""Register a custom template filter. Works exactly like the
:meth:`template_filter` decorator.
:param name: the optional name of the filter, otherwise the
function name will be used.
"""
self.jinja_env.filters[name or f.__name__] = f
@setupmethod
def template_test(self, name=None):
"""A decorator that is used to register custom template test.
You can specify a name for the test, otherwise the function
name will be used. Example::
@app.template_test()
def is_prime(n):
if n == 2:
return True
for i in range(2, int(math.ceil(math.sqrt(n))) + 1):
if n % i == 0:
return False
return True
.. versionadded:: 0.10
:param name: the optional name of the test, otherwise the
function name will be used.
"""
def decorator(f):
self.add_template_test(f, name=name)
return f
return decorator
@setupmethod
def add_template_test(self, f, name=None):
"""Register a custom template test. Works exactly like the
:meth:`template_test` decorator.
.. versionadded:: 0.10
:param name: the optional name of the test, otherwise the
function name will be used.
"""
self.jinja_env.tests[name or f.__name__] = f
@setupmethod
def template_global(self, name=None):
"""A decorator that is used to register a custom template global function.
You can specify a name for the global function, otherwise the function
name will be used. Example::
@app.template_global()
def double(n):
return 2 * n
.. versionadded:: 0.10
:param name: the optional name of the global function, otherwise the
function name will be used.
"""
def decorator(f):
self.add_template_global(f, name=name)
return f
return decorator
@setupmethod
def add_template_global(self, f, name=None):
"""Register a custom template global function. Works exactly like the
:meth:`template_global` decorator.
.. versionadded:: 0.10
:param name: the optional name of the global function, otherwise the
function name will be used.
"""
self.jinja_env.globals[name or f.__name__] = f
@setupmethod
def before_request(self, f):
"""Registers a function to run before each request.
For example, this can be used to open a database connection, or to load
the logged in user from the session.
The function will be called without any arguments. If it returns a
non-None value, the value is handled as if it was the return value from
the view, and further request handling is stopped.
"""
self.before_request_funcs.setdefault(None, []).append(f)
return f
@setupmethod
def before_first_request(self, f):
"""Registers a function to be run before the first request to this
instance of the application.
The function will be called without any arguments and its return
value is ignored.
.. versionadded:: 0.8
"""
self.before_first_request_funcs.append(f)
return f
@setupmethod
def after_request(self, f):
"""Register a function to be run after each request.
Your function must take one parameter, an instance of
:attr:`response_class` and return a new response object or the
same (see :meth:`process_response`).
As of Flask 0.7 this function might not be executed at the end of the
request in case an unhandled exception occurred.
"""
self.after_request_funcs.setdefault(None, []).append(f)
return f
@setupmethod
def teardown_request(self, f):
"""Register a function to be run at the end of each request,
regardless of whether there was an exception or not. These functions
are executed when the request context is popped, even if not an
actual request was performed.
Example::
ctx = app.test_request_context()
ctx.push()
...
ctx.pop()
When ``ctx.pop()`` is executed in the above example, the teardown
functions are called just before the request context moves from the
stack of active contexts. This becomes relevant if you are using
such constructs in tests.
Generally teardown functions must take every necessary step to avoid
that they will fail. If they do execute code that might fail they
will have to surround the execution of these code by try/except
statements and log occurring errors.
When a teardown function was called because of an exception it will
be passed an error object.
The return values of teardown functions are ignored.
.. admonition:: Debug Note
In debug mode Flask will not tear down a request on an exception
immediately. Instead it will keep it alive so that the interactive
debugger can still access it. This behavior can be controlled
by the ``PRESERVE_CONTEXT_ON_EXCEPTION`` configuration variable.
"""
self.teardown_request_funcs.setdefault(None, []).append(f)
return f
@setupmethod
def teardown_appcontext(self, f):
"""Registers a function to be called when the application context
ends. These functions are typically also called when the request
context is popped.
Example::
ctx = app.app_context()
ctx.push()
...
ctx.pop()
When ``ctx.pop()`` is executed in the above example, the teardown
functions are called just before the app context moves from the
stack of active contexts. This becomes relevant if you are using
such constructs in tests.
Since a request context typically also manages an application
context it would also be called when you pop a request context.
When a teardown function was called because of an unhandled exception
it will be passed an error object. If an :meth:`errorhandler` is
registered, it will handle the exception and the teardown will not
receive it.
The return values of teardown functions are ignored.
.. versionadded:: 0.9
"""
self.teardown_appcontext_funcs.append(f)
return f
@setupmethod
def context_processor(self, f):
"""Registers a template context processor function."""
self.template_context_processors[None].append(f)
return f
@setupmethod
def shell_context_processor(self, f):
"""Registers a shell context processor function.
.. versionadded:: 0.11
"""
self.shell_context_processors.append(f)
return f
@setupmethod
def url_value_preprocessor(self, f):
"""Register a URL value preprocessor function for all view
functions in the application. These functions will be called before the
:meth:`before_request` functions.
The function can modify the values captured from the matched url before
they are passed to the view. For example, this can be used to pop a
common language code value and place it in ``g`` rather than pass it to
every view.
The function is passed the endpoint name and values dict. The return
value is ignored.
"""
self.url_value_preprocessors.setdefault(None, []).append(f)
return f
@setupmethod
def url_defaults(self, f):
"""Callback function for URL defaults for all view functions of the
application. It's called with the endpoint and values and should
update the values passed in place.
"""
self.url_default_functions.setdefault(None, []).append(f)
return f
def _find_error_handler(self, e):
"""Return a registered error handler for an exception in this order:
blueprint handler for a specific code, app handler for a specific code,
blueprint handler for an exception class, app handler for an exception
class, or ``None`` if a suitable handler is not found.
"""
exc_class, code = self._get_exc_class_and_code(type(e))
for name, c in (
(request.blueprint, code),
(None, code),
(request.blueprint, None),
(None, None),
):
handler_map = self.error_handler_spec.setdefault(name, {}).get(c)
if not handler_map:
continue
for cls in exc_class.__mro__:
handler = handler_map.get(cls)
if handler is not None:
return handler
def handle_http_exception(self, e):
"""Handles an HTTP exception. By default this will invoke the
registered error handlers and fall back to returning the
exception as response.
.. versionchanged:: 1.0.3
``RoutingException``, used internally for actions such as
slash redirects during routing, is not passed to error
handlers.
.. versionchanged:: 1.0
Exceptions are looked up by code *and* by MRO, so
``HTTPExcpetion`` subclasses can be handled with a catch-all
handler for the base ``HTTPException``.
.. versionadded:: 0.3
"""
# Proxy exceptions don't have error codes. We want to always return
# those unchanged as errors
if e.code is None:
return e
# RoutingExceptions are used internally to trigger routing
# actions, such as slash redirects raising RequestRedirect. They
# are not raised or handled in user code.
if isinstance(e, RoutingException):
return e
handler = self._find_error_handler(e)
if handler is None:
return e
return handler(e)
def trap_http_exception(self, e):
"""Checks if an HTTP exception should be trapped or not. By default
this will return ``False`` for all exceptions except for a bad request
key error if ``TRAP_BAD_REQUEST_ERRORS`` is set to ``True``. It
also returns ``True`` if ``TRAP_HTTP_EXCEPTIONS`` is set to ``True``.
This is called for all HTTP exceptions raised by a view function.
If it returns ``True`` for any exception the error handler for this
exception is not called and it shows up as regular exception in the
traceback. This is helpful for debugging implicitly raised HTTP
exceptions.
.. versionchanged:: 1.0
Bad request errors are not trapped by default in debug mode.
.. versionadded:: 0.8
"""
if self.config["TRAP_HTTP_EXCEPTIONS"]:
return True
trap_bad_request = self.config["TRAP_BAD_REQUEST_ERRORS"]
# if unset, trap key errors in debug mode
if (
trap_bad_request is None
and self.debug
and isinstance(e, BadRequestKeyError)
):
return True
if trap_bad_request:
return isinstance(e, BadRequest)
return False
def handle_user_exception(self, e):
"""This method is called whenever an exception occurs that
should be handled. A special case is :class:`~werkzeug
.exceptions.HTTPException` which is forwarded to the
:meth:`handle_http_exception` method. This function will either
return a response value or reraise the exception with the same
traceback.
.. versionchanged:: 1.0
Key errors raised from request data like ``form`` show the
bad key in debug mode rather than a generic bad request
message.
.. versionadded:: 0.7
"""
exc_type, exc_value, tb = sys.exc_info()
assert exc_value is e
# ensure not to trash sys.exc_info() at that point in case someone
# wants the traceback preserved in handle_http_exception. Of course
# we cannot prevent users from trashing it themselves in a custom
# trap_http_exception method so that's their fault then.
if isinstance(e, BadRequestKeyError):
if self.debug or self.config["TRAP_BAD_REQUEST_ERRORS"]:
e.show_exception = True
# Werkzeug < 0.15 doesn't add the KeyError to the 400
# message, add it in manually.
# TODO: clean up once Werkzeug >= 0.15.5 is required
if e.args[0] not in e.get_description():
e.description = "KeyError: '{}'".format(*e.args)
elif not hasattr(BadRequestKeyError, "show_exception"):
e.args = ()
if isinstance(e, HTTPException) and not self.trap_http_exception(e):
return self.handle_http_exception(e)
handler = self._find_error_handler(e)
if handler is None:
reraise(exc_type, exc_value, tb)
return handler(e)
def handle_exception(self, e):
"""Handle an exception that did not have an error handler
associated with it, or that was raised from an error handler.
This always causes a 500 ``InternalServerError``.
Always sends the :data:`got_request_exception` signal.
If :attr:`propagate_exceptions` is ``True``, such as in debug
mode, the error will be re-raised so that the debugger can
display it. Otherwise, the original exception is logged, and
an :exc:`~werkzeug.exceptions.InternalServerError` is returned.
If an error handler is registered for ``InternalServerError`` or
``500``, it will be used. For consistency, the handler will
always receive the ``InternalServerError``. The original
unhandled exception is available as ``e.original_exception``.
.. note::
Prior to Werkzeug 1.0.0, ``InternalServerError`` will not
always have an ``original_exception`` attribute. Use
``getattr(e, "original_exception", None)`` to simulate the
behavior for compatibility.
.. versionchanged:: 1.1.0
Always passes the ``InternalServerError`` instance to the
handler, setting ``original_exception`` to the unhandled
error.
.. versionchanged:: 1.1.0
``after_request`` functions and other finalization is done
even for the default 500 response when there is no handler.
.. versionadded:: 0.3
"""
exc_type, exc_value, tb = sys.exc_info()
got_request_exception.send(self, exception=e)
if self.propagate_exceptions:
# if we want to repropagate the exception, we can attempt to
# raise it with the whole traceback in case we can do that
# (the function was actually called from the except part)
# otherwise, we just raise the error again
if exc_value is e:
reraise(exc_type, exc_value, tb)
else:
raise e
self.log_exception((exc_type, exc_value, tb))
server_error = InternalServerError()
# TODO: pass as param when Werkzeug>=1.0.0 is required
# TODO: also remove note about this from docstring and docs
server_error.original_exception = e
handler = self._find_error_handler(server_error)
if handler is not None:
server_error = handler(server_error)
return self.finalize_request(server_error, from_error_handler=True)
def log_exception(self, exc_info):
"""Logs an exception. This is called by :meth:`handle_exception`
if debugging is disabled and right before the handler is called.
The default implementation logs the exception as error on the
:attr:`logger`.
.. versionadded:: 0.8
"""
self.logger.error(
"Exception on %s [%s]" % (request.path, request.method), exc_info=exc_info
)
def raise_routing_exception(self, request):
"""Exceptions that are recording during routing are reraised with
this method. During debug we are not reraising redirect requests
for non ``GET``, ``HEAD``, or ``OPTIONS`` requests and we're raising
a different error instead to help debug situations.
:internal:
"""
if (
not self.debug
or not isinstance(request.routing_exception, RequestRedirect)
or request.method in ("GET", "HEAD", "OPTIONS")
):
raise request.routing_exception
from .debughelpers import FormDataRoutingRedirect
raise FormDataRoutingRedirect(request)
def dispatch_request(self):
"""Does the request dispatching. Matches the URL and returns the
return value of the view or error handler. This does not have to
be a response object. In order to convert the return value to a
proper response object, call :func:`make_response`.
.. versionchanged:: 0.7
This no longer does the exception handling, this code was
moved to the new :meth:`full_dispatch_request`.
"""
req = _request_ctx_stack.top.request
if req.routing_exception is not None:
self.raise_routing_exception(req)
rule = req.url_rule
# if we provide automatic options for this URL and the
# request came with the OPTIONS method, reply automatically
if (
getattr(rule, "provide_automatic_options", False)
and req.method == "OPTIONS"
):
return self.make_default_options_response()
# otherwise dispatch to the handler for that endpoint
return self.view_functions[rule.endpoint](**req.view_args)
def full_dispatch_request(self):
"""Dispatches the request and on top of that performs request
pre and postprocessing as well as HTTP exception catching and
error handling.
.. versionadded:: 0.7
"""
self.try_trigger_before_first_request_functions()
try:
request_started.send(self)
rv = self.preprocess_request()
if rv is None:
rv = self.dispatch_request()
except Exception as e:
rv = self.handle_user_exception(e)
return self.finalize_request(rv)
def finalize_request(self, rv, from_error_handler=False):
"""Given the return value from a view function this finalizes
the request by converting it into a response and invoking the
postprocessing functions. This is invoked for both normal
request dispatching as well as error handlers.
Because this means that it might be called as a result of a
failure a special safe mode is available which can be enabled
with the `from_error_handler` flag. If enabled, failures in
response processing will be logged and otherwise ignored.
:internal:
"""
response = self.make_response(rv)
try:
response = self.process_response(response)
request_finished.send(self, response=response)
except Exception:
if not from_error_handler:
raise
self.logger.exception(
"Request finalizing failed with an error while handling an error"
)
return response
def try_trigger_before_first_request_functions(self):
"""Called before each request and will ensure that it triggers
the :attr:`before_first_request_funcs` and only exactly once per
application instance (which means process usually).
:internal:
"""
if self._got_first_request:
return
with self._before_request_lock:
if self._got_first_request:
return
for func in self.before_first_request_funcs:
func()
self._got_first_request = True
def make_default_options_response(self):
"""This method is called to create the default ``OPTIONS`` response.
This can be changed through subclassing to change the default
behavior of ``OPTIONS`` responses.
.. versionadded:: 0.7
"""
adapter = _request_ctx_stack.top.url_adapter
if hasattr(adapter, "allowed_methods"):
methods = adapter.allowed_methods()
else:
# fallback for Werkzeug < 0.7
methods = []
try:
adapter.match(method="--")
except MethodNotAllowed as e:
methods = e.valid_methods
except HTTPException:
pass
rv = self.response_class()
rv.allow.update(methods)
return rv
def should_ignore_error(self, error):
"""This is called to figure out if an error should be ignored
or not as far as the teardown system is concerned. If this
function returns ``True`` then the teardown handlers will not be
passed the error.
.. versionadded:: 0.10
"""
return False
def make_response(self, rv):
"""Convert the return value from a view function to an instance of
:attr:`response_class`.
:param rv: the return value from the view function. The view function
must return a response. Returning ``None``, or the view ending
without returning, is not allowed. The following types are allowed
for ``view_rv``:
``str`` (``unicode`` in Python 2)
A response object is created with the string encoded to UTF-8
as the body.
``bytes`` (``str`` in Python 2)
A response object is created with the bytes as the body.
``dict``
A dictionary that will be jsonify'd before being returned.
``tuple``
Either ``(body, status, headers)``, ``(body, status)``, or
``(body, headers)``, where ``body`` is any of the other types
allowed here, ``status`` is a string or an integer, and
``headers`` is a dictionary or a list of ``(key, value)``
tuples. If ``body`` is a :attr:`response_class` instance,
``status`` overwrites the exiting value and ``headers`` are
extended.
:attr:`response_class`
The object is returned unchanged.
other :class:`~werkzeug.wrappers.Response` class
The object is coerced to :attr:`response_class`.
:func:`callable`
The function is called as a WSGI application. The result is
used to create a response object.
.. versionchanged:: 0.9
Previously a tuple was interpreted as the arguments for the
response object.
"""
status = headers = None
# unpack tuple returns
if isinstance(rv, tuple):
len_rv = len(rv)
# a 3-tuple is unpacked directly
if len_rv == 3:
rv, status, headers = rv
# decide if a 2-tuple has status or headers
elif len_rv == 2:
if isinstance(rv[1], (Headers, dict, tuple, list)):
rv, headers = rv
else:
rv, status = rv
# other sized tuples are not allowed
else:
raise TypeError(
"The view function did not return a valid response tuple."
" The tuple must have the form (body, status, headers),"
" (body, status), or (body, headers)."
)
# the body must not be None
if rv is None:
raise TypeError(
"The view function did not return a valid response. The"
" function either returned None or ended without a return"
" statement."
)
# make sure the body is an instance of the response class
if not isinstance(rv, self.response_class):
if isinstance(rv, (text_type, bytes, bytearray)):
# let the response class set the status and headers instead of
# waiting to do it manually, so that the class can handle any
# special logic
rv = self.response_class(rv, status=status, headers=headers)
status = headers = None
elif isinstance(rv, dict):
rv = jsonify(rv)
elif isinstance(rv, BaseResponse) or callable(rv):
# evaluate a WSGI callable, or coerce a different response
# class to the correct type
try:
rv = self.response_class.force_type(rv, request.environ)
except TypeError as e:
new_error = TypeError(
"{e}\nThe view function did not return a valid"
" response. The return type must be a string, dict, tuple,"
" Response instance, or WSGI callable, but it was a"
" {rv.__class__.__name__}.".format(e=e, rv=rv)
)
reraise(TypeError, new_error, sys.exc_info()[2])
else:
raise TypeError(
"The view function did not return a valid"
" response. The return type must be a string, dict, tuple,"
" Response instance, or WSGI callable, but it was a"
" {rv.__class__.__name__}.".format(rv=rv)
)
# prefer the status if it was provided
if status is not None:
if isinstance(status, (text_type, bytes, bytearray)):
rv.status = status
else:
rv.status_code = status
# extend existing headers with provided headers
if headers:
rv.headers.extend(headers)
return rv
def create_url_adapter(self, request):
"""Creates a URL adapter for the given request. The URL adapter
is created at a point where the request context is not yet set
up so the request is passed explicitly.
.. versionadded:: 0.6
.. versionchanged:: 0.9
This can now also be called without a request object when the
URL adapter is created for the application context.
.. versionchanged:: 1.0
:data:`SERVER_NAME` no longer implicitly enables subdomain
matching. Use :attr:`subdomain_matching` instead.
"""
if request is not None:
# If subdomain matching is disabled (the default), use the
# default subdomain in all cases. This should be the default
# in Werkzeug but it currently does not have that feature.
subdomain = (
(self.url_map.default_subdomain or None)
if not self.subdomain_matching
else None
)
return self.url_map.bind_to_environ(
request.environ,
server_name=self.config["SERVER_NAME"],
subdomain=subdomain,
)
# We need at the very least the server name to be set for this
# to work.
if self.config["SERVER_NAME"] is not None:
return self.url_map.bind(
self.config["SERVER_NAME"],
script_name=self.config["APPLICATION_ROOT"],
url_scheme=self.config["PREFERRED_URL_SCHEME"],
)
def inject_url_defaults(self, endpoint, values):
"""Injects the URL defaults for the given endpoint directly into
the values dictionary passed. This is used internally and
automatically called on URL building.
.. versionadded:: 0.7
"""
funcs = self.url_default_functions.get(None, ())
if "." in endpoint:
bp = endpoint.rsplit(".", 1)[0]
funcs = chain(funcs, self.url_default_functions.get(bp, ()))
for func in funcs:
func(endpoint, values)
def handle_url_build_error(self, error, endpoint, values):
"""Handle :class:`~werkzeug.routing.BuildError` on :meth:`url_for`.
"""
exc_type, exc_value, tb = sys.exc_info()
for handler in self.url_build_error_handlers:
try:
rv = handler(error, endpoint, values)
if rv is not None:
return rv
except BuildError as e:
# make error available outside except block (py3)
error = e
# At this point we want to reraise the exception. If the error is
# still the same one we can reraise it with the original traceback,
# otherwise we raise it from here.
if error is exc_value:
reraise(exc_type, exc_value, tb)
raise error
def preprocess_request(self):
"""Called before the request is dispatched. Calls
:attr:`url_value_preprocessors` registered with the app and the
current blueprint (if any). Then calls :attr:`before_request_funcs`
registered with the app and the blueprint.
If any :meth:`before_request` handler returns a non-None value, the
value is handled as if it was the return value from the view, and
further request handling is stopped.
"""
bp = _request_ctx_stack.top.request.blueprint
funcs = self.url_value_preprocessors.get(None, ())
if bp is not None and bp in self.url_value_preprocessors:
funcs = chain(funcs, self.url_value_preprocessors[bp])
for func in funcs:
func(request.endpoint, request.view_args)
funcs = self.before_request_funcs.get(None, ())
if bp is not None and bp in self.before_request_funcs:
funcs = chain(funcs, self.before_request_funcs[bp])
for func in funcs:
rv = func()
if rv is not None:
return rv
def process_response(self, response):
"""Can be overridden in order to modify the response object
before it's sent to the WSGI server. By default this will
call all the :meth:`after_request` decorated functions.
.. versionchanged:: 0.5
As of Flask 0.5 the functions registered for after request
execution are called in reverse order of registration.
:param response: a :attr:`response_class` object.
:return: a new response object or the same, has to be an
instance of :attr:`response_class`.
"""
ctx = _request_ctx_stack.top
bp = ctx.request.blueprint
funcs = ctx._after_request_functions
if bp is not None and bp in self.after_request_funcs:
funcs = chain(funcs, reversed(self.after_request_funcs[bp]))
if None in self.after_request_funcs:
funcs = chain(funcs, reversed(self.after_request_funcs[None]))
for handler in funcs:
response = handler(response)
if not self.session_interface.is_null_session(ctx.session):
self.session_interface.save_session(self, ctx.session, response)
return response
def do_teardown_request(self, exc=_sentinel):
"""Called after the request is dispatched and the response is
returned, right before the request context is popped.
This calls all functions decorated with
:meth:`teardown_request`, and :meth:`Blueprint.teardown_request`
if a blueprint handled the request. Finally, the
:data:`request_tearing_down` signal is sent.
This is called by
:meth:`RequestContext.pop() <flask.ctx.RequestContext.pop>`,
which may be delayed during testing to maintain access to
resources.
:param exc: An unhandled exception raised while dispatching the
request. Detected from the current exception information if
not passed. Passed to each teardown function.
.. versionchanged:: 0.9
Added the ``exc`` argument.
"""
if exc is _sentinel:
exc = sys.exc_info()[1]
funcs = reversed(self.teardown_request_funcs.get(None, ()))
bp = _request_ctx_stack.top.request.blueprint
if bp is not None and bp in self.teardown_request_funcs:
funcs = chain(funcs, reversed(self.teardown_request_funcs[bp]))
for func in funcs:
func(exc)
request_tearing_down.send(self, exc=exc)
def do_teardown_appcontext(self, exc=_sentinel):
"""Called right before the application context is popped.
When handling a request, the application context is popped
after the request context. See :meth:`do_teardown_request`.
This calls all functions decorated with
:meth:`teardown_appcontext`. Then the
:data:`appcontext_tearing_down` signal is sent.
This is called by
:meth:`AppContext.pop() <flask.ctx.AppContext.pop>`.
.. versionadded:: 0.9
"""
if exc is _sentinel:
exc = sys.exc_info()[1]
for func in reversed(self.teardown_appcontext_funcs):
func(exc)
appcontext_tearing_down.send(self, exc=exc)
def app_context(self):
"""Create an :class:`~flask.ctx.AppContext`. Use as a ``with``
block to push the context, which will make :data:`current_app`
point at this application.
An application context is automatically pushed by
:meth:`RequestContext.push() <flask.ctx.RequestContext.push>`
when handling a request, and when running a CLI command. Use
this to manually create a context outside of these situations.
::
with app.app_context():
init_db()
See :doc:`/appcontext`.
.. versionadded:: 0.9
"""
return AppContext(self)
def request_context(self, environ):
"""Create a :class:`~flask.ctx.RequestContext` representing a
WSGI environment. Use a ``with`` block to push the context,
which will make :data:`request` point at this request.
See :doc:`/reqcontext`.
Typically you should not call this from your own code. A request
context is automatically pushed by the :meth:`wsgi_app` when
handling a request. Use :meth:`test_request_context` to create
an environment and context instead of this method.
:param environ: a WSGI environment
"""
return RequestContext(self, environ)
def test_request_context(self, *args, **kwargs):
"""Create a :class:`~flask.ctx.RequestContext` for a WSGI
environment created from the given values. This is mostly useful
during testing, where you may want to run a function that uses
request data without dispatching a full request.
See :doc:`/reqcontext`.
Use a ``with`` block to push the context, which will make
:data:`request` point at the request for the created
environment. ::
with test_request_context(...):
generate_report()
When using the shell, it may be easier to push and pop the
context manually to avoid indentation. ::
ctx = app.test_request_context(...)
ctx.push()
...
ctx.pop()
Takes the same arguments as Werkzeug's
:class:`~werkzeug.test.EnvironBuilder`, with some defaults from
the application. See the linked Werkzeug docs for most of the
available arguments. Flask-specific behavior is listed here.
:param path: URL path being requested.
:param base_url: Base URL where the app is being served, which
``path`` is relative to. If not given, built from
:data:`PREFERRED_URL_SCHEME`, ``subdomain``,
:data:`SERVER_NAME`, and :data:`APPLICATION_ROOT`.
:param subdomain: Subdomain name to append to
:data:`SERVER_NAME`.
:param url_scheme: Scheme to use instead of
:data:`PREFERRED_URL_SCHEME`.
:param data: The request body, either as a string or a dict of
form keys and values.
:param json: If given, this is serialized as JSON and passed as
``data``. Also defaults ``content_type`` to
``application/json``.
:param args: other positional arguments passed to
:class:`~werkzeug.test.EnvironBuilder`.
:param kwargs: other keyword arguments passed to
:class:`~werkzeug.test.EnvironBuilder`.
"""
from .testing import EnvironBuilder
builder = EnvironBuilder(self, *args, **kwargs)
try:
return self.request_context(builder.get_environ())
finally:
builder.close()
def wsgi_app(self, environ, start_response):
"""The actual WSGI application. This is not implemented in
:meth:`__call__` so that middlewares can be applied without
losing a reference to the app object. Instead of doing this::
app = MyMiddleware(app)
It's a better idea to do this instead::
app.wsgi_app = MyMiddleware(app.wsgi_app)
Then you still have the original application object around and
can continue to call methods on it.
.. versionchanged:: 0.7
Teardown events for the request and app contexts are called
even if an unhandled error occurs. Other events may not be
called depending on when an error occurs during dispatch.
See :ref:`callbacks-and-errors`.
:param environ: A WSGI environment.
:param start_response: A callable accepting a status code,
a list of headers, and an optional exception context to
start the response.
"""
ctx = self.request_context(environ)
error = None
try:
try:
ctx.push()
response = self.full_dispatch_request()
except Exception as e:
error = e
response = self.handle_exception(e)
except: # noqa: B001
error = sys.exc_info()[1]
raise
return response(environ, start_response)
finally:
if self.should_ignore_error(error):
error = None
ctx.auto_pop(error)
def __call__(self, environ, start_response):
"""The WSGI server calls the Flask application object as the
WSGI application. This calls :meth:`wsgi_app` which can be
wrapped to applying middleware."""
return self.wsgi_app(environ, start_response)
def __repr__(self):
return "<%s %r>" % (self.__class__.__name__, self.name)
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/flask/debughelpers.py
|
# -*- coding: utf-8 -*-
"""
flask.debughelpers
~~~~~~~~~~~~~~~~~~
Various helpers to make the development experience better.
:copyright: 2010 Pallets
:license: BSD-3-Clause
"""
import os
from warnings import warn
from ._compat import implements_to_string
from ._compat import text_type
from .app import Flask
from .blueprints import Blueprint
from .globals import _request_ctx_stack
class UnexpectedUnicodeError(AssertionError, UnicodeError):
"""Raised in places where we want some better error reporting for
unexpected unicode or binary data.
"""
@implements_to_string
class DebugFilesKeyError(KeyError, AssertionError):
"""Raised from request.files during debugging. The idea is that it can
provide a better error message than just a generic KeyError/BadRequest.
"""
def __init__(self, request, key):
form_matches = request.form.getlist(key)
buf = [
'You tried to access the file "%s" in the request.files '
"dictionary but it does not exist. The mimetype for the request "
'is "%s" instead of "multipart/form-data" which means that no '
"file contents were transmitted. To fix this error you should "
'provide enctype="multipart/form-data" in your form.'
% (key, request.mimetype)
]
if form_matches:
buf.append(
"\n\nThe browser instead transmitted some file names. "
"This was submitted: %s" % ", ".join('"%s"' % x for x in form_matches)
)
self.msg = "".join(buf)
def __str__(self):
return self.msg
class FormDataRoutingRedirect(AssertionError):
"""This exception is raised by Flask in debug mode if it detects a
redirect caused by the routing system when the request method is not
GET, HEAD or OPTIONS. Reasoning: form data will be dropped.
"""
def __init__(self, request):
exc = request.routing_exception
buf = [
"A request was sent to this URL (%s) but a redirect was "
'issued automatically by the routing system to "%s".'
% (request.url, exc.new_url)
]
# In case just a slash was appended we can be extra helpful
if request.base_url + "/" == exc.new_url.split("?")[0]:
buf.append(
" The URL was defined with a trailing slash so "
"Flask will automatically redirect to the URL "
"with the trailing slash if it was accessed "
"without one."
)
buf.append(
" Make sure to directly send your %s-request to this URL "
"since we can't make browsers or HTTP clients redirect "
"with form data reliably or without user interaction." % request.method
)
buf.append("\n\nNote: this exception is only raised in debug mode")
AssertionError.__init__(self, "".join(buf).encode("utf-8"))
def attach_enctype_error_multidict(request):
"""Since Flask 0.8 we're monkeypatching the files object in case a
request is detected that does not use multipart form data but the files
object is accessed.
"""
oldcls = request.files.__class__
class newcls(oldcls):
def __getitem__(self, key):
try:
return oldcls.__getitem__(self, key)
except KeyError:
if key not in request.form:
raise
raise DebugFilesKeyError(request, key)
newcls.__name__ = oldcls.__name__
newcls.__module__ = oldcls.__module__
request.files.__class__ = newcls
def _dump_loader_info(loader):
yield "class: %s.%s" % (type(loader).__module__, type(loader).__name__)
for key, value in sorted(loader.__dict__.items()):
if key.startswith("_"):
continue
if isinstance(value, (tuple, list)):
if not all(isinstance(x, (str, text_type)) for x in value):
continue
yield "%s:" % key
for item in value:
yield " - %s" % item
continue
elif not isinstance(value, (str, text_type, int, float, bool)):
continue
yield "%s: %r" % (key, value)
def explain_template_loading_attempts(app, template, attempts):
"""This should help developers understand what failed"""
info = ['Locating template "%s":' % template]
total_found = 0
blueprint = None
reqctx = _request_ctx_stack.top
if reqctx is not None and reqctx.request.blueprint is not None:
blueprint = reqctx.request.blueprint
for idx, (loader, srcobj, triple) in enumerate(attempts):
if isinstance(srcobj, Flask):
src_info = 'application "%s"' % srcobj.import_name
elif isinstance(srcobj, Blueprint):
src_info = 'blueprint "%s" (%s)' % (srcobj.name, srcobj.import_name)
else:
src_info = repr(srcobj)
info.append("% 5d: trying loader of %s" % (idx + 1, src_info))
for line in _dump_loader_info(loader):
info.append(" %s" % line)
if triple is None:
detail = "no match"
else:
detail = "found (%r)" % (triple[1] or "<string>")
total_found += 1
info.append(" -> %s" % detail)
seems_fishy = False
if total_found == 0:
info.append("Error: the template could not be found.")
seems_fishy = True
elif total_found > 1:
info.append("Warning: multiple loaders returned a match for the template.")
seems_fishy = True
if blueprint is not None and seems_fishy:
info.append(
" The template was looked up from an endpoint that "
'belongs to the blueprint "%s".' % blueprint
)
info.append(" Maybe you did not place a template in the right folder?")
info.append(" See http://flask.pocoo.org/docs/blueprints/#templates")
app.logger.info("\n".join(info))
def explain_ignored_app_run():
if os.environ.get("WERKZEUG_RUN_MAIN") != "true":
warn(
Warning(
"Silently ignoring app.run() because the "
"application is run from the flask command line "
"executable. Consider putting app.run() behind an "
'if __name__ == "__main__" guard to silence this '
"warning."
),
stacklevel=3,
)
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/flask/_compat.py
|
# -*- coding: utf-8 -*-
"""
flask._compat
~~~~~~~~~~~~~
Some py2/py3 compatibility support based on a stripped down
version of six so we don't have to depend on a specific version
of it.
:copyright: 2010 Pallets
:license: BSD-3-Clause
"""
import sys
PY2 = sys.version_info[0] == 2
_identity = lambda x: x
try: # Python 2
text_type = unicode
string_types = (str, unicode)
integer_types = (int, long)
except NameError: # Python 3
text_type = str
string_types = (str,)
integer_types = (int,)
if not PY2:
iterkeys = lambda d: iter(d.keys())
itervalues = lambda d: iter(d.values())
iteritems = lambda d: iter(d.items())
from inspect import getfullargspec as getargspec
from io import StringIO
import collections.abc as collections_abc
def reraise(tp, value, tb=None):
if value.__traceback__ is not tb:
raise value.with_traceback(tb)
raise value
implements_to_string = _identity
else:
iterkeys = lambda d: d.iterkeys()
itervalues = lambda d: d.itervalues()
iteritems = lambda d: d.iteritems()
from inspect import getargspec
from cStringIO import StringIO
import collections as collections_abc
exec("def reraise(tp, value, tb=None):\n raise tp, value, tb")
def implements_to_string(cls):
cls.__unicode__ = cls.__str__
cls.__str__ = lambda x: x.__unicode__().encode("utf-8")
return cls
def with_metaclass(meta, *bases):
"""Create a base class with a metaclass."""
# This requires a bit of explanation: the basic idea is to make a
# dummy metaclass for one level of class instantiation that replaces
# itself with the actual metaclass.
class metaclass(type):
def __new__(metacls, name, this_bases, d):
return meta(name, bases, d)
return type.__new__(metaclass, "temporary_class", (), {})
# Certain versions of pypy have a bug where clearing the exception stack
# breaks the __exit__ function in a very peculiar way. The second level of
# exception blocks is necessary because pypy seems to forget to check if an
# exception happened until the next bytecode instruction?
#
# Relevant PyPy bugfix commit:
# https://bitbucket.org/pypy/pypy/commits/77ecf91c635a287e88e60d8ddb0f4e9df4003301
# According to ronan on #pypy IRC, it is released in PyPy2 2.3 and later
# versions.
#
# Ubuntu 14.04 has PyPy 2.2.1, which does exhibit this bug.
BROKEN_PYPY_CTXMGR_EXIT = False
if hasattr(sys, "pypy_version_info"):
class _Mgr(object):
def __enter__(self):
return self
def __exit__(self, *args):
if hasattr(sys, "exc_clear"):
# Python 3 (PyPy3) doesn't have exc_clear
sys.exc_clear()
try:
try:
with _Mgr():
raise AssertionError()
except: # noqa: B001
# We intentionally use a bare except here. See the comment above
# regarding a pypy bug as to why.
raise
except TypeError:
BROKEN_PYPY_CTXMGR_EXIT = True
except AssertionError:
pass
try:
from os import fspath
except ImportError:
# Backwards compatibility as proposed in PEP 0519:
# https://www.python.org/dev/peps/pep-0519/#backwards-compatibility
def fspath(path):
return path.__fspath__() if hasattr(path, "__fspath__") else path
class _DeprecatedBool(object):
def __init__(self, name, version, value):
self.message = "'{}' is deprecated and will be removed in version {}.".format(
name, version
)
self.value = value
def _warn(self):
import warnings
warnings.warn(self.message, DeprecationWarning, stacklevel=2)
def __eq__(self, other):
self._warn()
return other == self.value
def __ne__(self, other):
self._warn()
return other != self.value
def __bool__(self):
self._warn()
return self.value
__nonzero__ = __bool__
json_available = _DeprecatedBool("flask.json_available", "2.0.0", True)
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/flask/ctx.py
|
# -*- coding: utf-8 -*-
"""
flask.ctx
~~~~~~~~~
Implements the objects required to keep the context.
:copyright: 2010 Pallets
:license: BSD-3-Clause
"""
import sys
from functools import update_wrapper
from werkzeug.exceptions import HTTPException
from ._compat import BROKEN_PYPY_CTXMGR_EXIT
from ._compat import reraise
from .globals import _app_ctx_stack
from .globals import _request_ctx_stack
from .signals import appcontext_popped
from .signals import appcontext_pushed
# a singleton sentinel value for parameter defaults
_sentinel = object()
class _AppCtxGlobals(object):
"""A plain object. Used as a namespace for storing data during an
application context.
Creating an app context automatically creates this object, which is
made available as the :data:`g` proxy.
.. describe:: 'key' in g
Check whether an attribute is present.
.. versionadded:: 0.10
.. describe:: iter(g)
Return an iterator over the attribute names.
.. versionadded:: 0.10
"""
def get(self, name, default=None):
"""Get an attribute by name, or a default value. Like
:meth:`dict.get`.
:param name: Name of attribute to get.
:param default: Value to return if the attribute is not present.
.. versionadded:: 0.10
"""
return self.__dict__.get(name, default)
def pop(self, name, default=_sentinel):
"""Get and remove an attribute by name. Like :meth:`dict.pop`.
:param name: Name of attribute to pop.
:param default: Value to return if the attribute is not present,
instead of raise a ``KeyError``.
.. versionadded:: 0.11
"""
if default is _sentinel:
return self.__dict__.pop(name)
else:
return self.__dict__.pop(name, default)
def setdefault(self, name, default=None):
"""Get the value of an attribute if it is present, otherwise
set and return a default value. Like :meth:`dict.setdefault`.
:param name: Name of attribute to get.
:param: default: Value to set and return if the attribute is not
present.
.. versionadded:: 0.11
"""
return self.__dict__.setdefault(name, default)
def __contains__(self, item):
return item in self.__dict__
def __iter__(self):
return iter(self.__dict__)
def __repr__(self):
top = _app_ctx_stack.top
if top is not None:
return "<flask.g of %r>" % top.app.name
return object.__repr__(self)
def after_this_request(f):
"""Executes a function after this request. This is useful to modify
response objects. The function is passed the response object and has
to return the same or a new one.
Example::
@app.route('/')
def index():
@after_this_request
def add_header(response):
response.headers['X-Foo'] = 'Parachute'
return response
return 'Hello World!'
This is more useful if a function other than the view function wants to
modify a response. For instance think of a decorator that wants to add
some headers without converting the return value into a response object.
.. versionadded:: 0.9
"""
_request_ctx_stack.top._after_request_functions.append(f)
return f
def copy_current_request_context(f):
"""A helper function that decorates a function to retain the current
request context. This is useful when working with greenlets. The moment
the function is decorated a copy of the request context is created and
then pushed when the function is called. The current session is also
included in the copied request context.
Example::
import gevent
from flask import copy_current_request_context
@app.route('/')
def index():
@copy_current_request_context
def do_some_work():
# do some work here, it can access flask.request or
# flask.session like you would otherwise in the view function.
...
gevent.spawn(do_some_work)
return 'Regular response'
.. versionadded:: 0.10
"""
top = _request_ctx_stack.top
if top is None:
raise RuntimeError(
"This decorator can only be used at local scopes "
"when a request context is on the stack. For instance within "
"view functions."
)
reqctx = top.copy()
def wrapper(*args, **kwargs):
with reqctx:
return f(*args, **kwargs)
return update_wrapper(wrapper, f)
def has_request_context():
"""If you have code that wants to test if a request context is there or
not this function can be used. For instance, you may want to take advantage
of request information if the request object is available, but fail
silently if it is unavailable.
::
class User(db.Model):
def __init__(self, username, remote_addr=None):
self.username = username
if remote_addr is None and has_request_context():
remote_addr = request.remote_addr
self.remote_addr = remote_addr
Alternatively you can also just test any of the context bound objects
(such as :class:`request` or :class:`g`) for truthness::
class User(db.Model):
def __init__(self, username, remote_addr=None):
self.username = username
if remote_addr is None and request:
remote_addr = request.remote_addr
self.remote_addr = remote_addr
.. versionadded:: 0.7
"""
return _request_ctx_stack.top is not None
def has_app_context():
"""Works like :func:`has_request_context` but for the application
context. You can also just do a boolean check on the
:data:`current_app` object instead.
.. versionadded:: 0.9
"""
return _app_ctx_stack.top is not None
class AppContext(object):
"""The application context binds an application object implicitly
to the current thread or greenlet, similar to how the
:class:`RequestContext` binds request information. The application
context is also implicitly created if a request context is created
but the application is not on top of the individual application
context.
"""
def __init__(self, app):
self.app = app
self.url_adapter = app.create_url_adapter(None)
self.g = app.app_ctx_globals_class()
# Like request context, app contexts can be pushed multiple times
# but there a basic "refcount" is enough to track them.
self._refcnt = 0
def push(self):
"""Binds the app context to the current context."""
self._refcnt += 1
if hasattr(sys, "exc_clear"):
sys.exc_clear()
_app_ctx_stack.push(self)
appcontext_pushed.send(self.app)
def pop(self, exc=_sentinel):
"""Pops the app context."""
try:
self._refcnt -= 1
if self._refcnt <= 0:
if exc is _sentinel:
exc = sys.exc_info()[1]
self.app.do_teardown_appcontext(exc)
finally:
rv = _app_ctx_stack.pop()
assert rv is self, "Popped wrong app context. (%r instead of %r)" % (rv, self)
appcontext_popped.send(self.app)
def __enter__(self):
self.push()
return self
def __exit__(self, exc_type, exc_value, tb):
self.pop(exc_value)
if BROKEN_PYPY_CTXMGR_EXIT and exc_type is not None:
reraise(exc_type, exc_value, tb)
class RequestContext(object):
"""The request context contains all request relevant information. It is
created at the beginning of the request and pushed to the
`_request_ctx_stack` and removed at the end of it. It will create the
URL adapter and request object for the WSGI environment provided.
Do not attempt to use this class directly, instead use
:meth:`~flask.Flask.test_request_context` and
:meth:`~flask.Flask.request_context` to create this object.
When the request context is popped, it will evaluate all the
functions registered on the application for teardown execution
(:meth:`~flask.Flask.teardown_request`).
The request context is automatically popped at the end of the request
for you. In debug mode the request context is kept around if
exceptions happen so that interactive debuggers have a chance to
introspect the data. With 0.4 this can also be forced for requests
that did not fail and outside of ``DEBUG`` mode. By setting
``'flask._preserve_context'`` to ``True`` on the WSGI environment the
context will not pop itself at the end of the request. This is used by
the :meth:`~flask.Flask.test_client` for example to implement the
deferred cleanup functionality.
You might find this helpful for unittests where you need the
information from the context local around for a little longer. Make
sure to properly :meth:`~werkzeug.LocalStack.pop` the stack yourself in
that situation, otherwise your unittests will leak memory.
"""
def __init__(self, app, environ, request=None, session=None):
self.app = app
if request is None:
request = app.request_class(environ)
self.request = request
self.url_adapter = None
try:
self.url_adapter = app.create_url_adapter(self.request)
except HTTPException as e:
self.request.routing_exception = e
self.flashes = None
self.session = session
# Request contexts can be pushed multiple times and interleaved with
# other request contexts. Now only if the last level is popped we
# get rid of them. Additionally if an application context is missing
# one is created implicitly so for each level we add this information
self._implicit_app_ctx_stack = []
# indicator if the context was preserved. Next time another context
# is pushed the preserved context is popped.
self.preserved = False
# remembers the exception for pop if there is one in case the context
# preservation kicks in.
self._preserved_exc = None
# Functions that should be executed after the request on the response
# object. These will be called before the regular "after_request"
# functions.
self._after_request_functions = []
@property
def g(self):
return _app_ctx_stack.top.g
@g.setter
def g(self, value):
_app_ctx_stack.top.g = value
def copy(self):
"""Creates a copy of this request context with the same request object.
This can be used to move a request context to a different greenlet.
Because the actual request object is the same this cannot be used to
move a request context to a different thread unless access to the
request object is locked.
.. versionadded:: 0.10
.. versionchanged:: 1.1
The current session object is used instead of reloading the original
data. This prevents `flask.session` pointing to an out-of-date object.
"""
return self.__class__(
self.app,
environ=self.request.environ,
request=self.request,
session=self.session,
)
def match_request(self):
"""Can be overridden by a subclass to hook into the matching
of the request.
"""
try:
result = self.url_adapter.match(return_rule=True)
self.request.url_rule, self.request.view_args = result
except HTTPException as e:
self.request.routing_exception = e
def push(self):
"""Binds the request context to the current context."""
# If an exception occurs in debug mode or if context preservation is
# activated under exception situations exactly one context stays
# on the stack. The rationale is that you want to access that
# information under debug situations. However if someone forgets to
# pop that context again we want to make sure that on the next push
# it's invalidated, otherwise we run at risk that something leaks
# memory. This is usually only a problem in test suite since this
# functionality is not active in production environments.
top = _request_ctx_stack.top
if top is not None and top.preserved:
top.pop(top._preserved_exc)
# Before we push the request context we have to ensure that there
# is an application context.
app_ctx = _app_ctx_stack.top
if app_ctx is None or app_ctx.app != self.app:
app_ctx = self.app.app_context()
app_ctx.push()
self._implicit_app_ctx_stack.append(app_ctx)
else:
self._implicit_app_ctx_stack.append(None)
if hasattr(sys, "exc_clear"):
sys.exc_clear()
_request_ctx_stack.push(self)
# Open the session at the moment that the request context is available.
# This allows a custom open_session method to use the request context.
# Only open a new session if this is the first time the request was
# pushed, otherwise stream_with_context loses the session.
if self.session is None:
session_interface = self.app.session_interface
self.session = session_interface.open_session(self.app, self.request)
if self.session is None:
self.session = session_interface.make_null_session(self.app)
if self.url_adapter is not None:
self.match_request()
def pop(self, exc=_sentinel):
"""Pops the request context and unbinds it by doing that. This will
also trigger the execution of functions registered by the
:meth:`~flask.Flask.teardown_request` decorator.
.. versionchanged:: 0.9
Added the `exc` argument.
"""
app_ctx = self._implicit_app_ctx_stack.pop()
try:
clear_request = False
if not self._implicit_app_ctx_stack:
self.preserved = False
self._preserved_exc = None
if exc is _sentinel:
exc = sys.exc_info()[1]
self.app.do_teardown_request(exc)
# If this interpreter supports clearing the exception information
# we do that now. This will only go into effect on Python 2.x,
# on 3.x it disappears automatically at the end of the exception
# stack.
if hasattr(sys, "exc_clear"):
sys.exc_clear()
request_close = getattr(self.request, "close", None)
if request_close is not None:
request_close()
clear_request = True
finally:
rv = _request_ctx_stack.pop()
# get rid of circular dependencies at the end of the request
# so that we don't require the GC to be active.
if clear_request:
rv.request.environ["werkzeug.request"] = None
# Get rid of the app as well if necessary.
if app_ctx is not None:
app_ctx.pop(exc)
assert rv is self, "Popped wrong request context. (%r instead of %r)" % (
rv,
self,
)
def auto_pop(self, exc):
if self.request.environ.get("flask._preserve_context") or (
exc is not None and self.app.preserve_context_on_exception
):
self.preserved = True
self._preserved_exc = exc
else:
self.pop(exc)
def __enter__(self):
self.push()
return self
def __exit__(self, exc_type, exc_value, tb):
# do not pop the request stack if we are in debug mode and an
# exception happened. This will allow the debugger to still
# access the request object in the interactive shell. Furthermore
# the context can be force kept alive for the test client.
# See flask.testing for how this works.
self.auto_pop(exc_value)
if BROKEN_PYPY_CTXMGR_EXIT and exc_type is not None:
reraise(exc_type, exc_value, tb)
def __repr__(self):
return "<%s '%s' [%s] of %s>" % (
self.__class__.__name__,
self.request.url,
self.request.method,
self.app.name,
)
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/flask/testing.py
|
# -*- coding: utf-8 -*-
"""
flask.testing
~~~~~~~~~~~~~
Implements test support helpers. This module is lazily imported
and usually not used in production environments.
:copyright: 2010 Pallets
:license: BSD-3-Clause
"""
import warnings
from contextlib import contextmanager
import werkzeug.test
from click.testing import CliRunner
from werkzeug.test import Client
from werkzeug.urls import url_parse
from . import _request_ctx_stack
from .cli import ScriptInfo
from .json import dumps as json_dumps
class EnvironBuilder(werkzeug.test.EnvironBuilder):
"""An :class:`~werkzeug.test.EnvironBuilder`, that takes defaults from the
application.
:param app: The Flask application to configure the environment from.
:param path: URL path being requested.
:param base_url: Base URL where the app is being served, which
``path`` is relative to. If not given, built from
:data:`PREFERRED_URL_SCHEME`, ``subdomain``,
:data:`SERVER_NAME`, and :data:`APPLICATION_ROOT`.
:param subdomain: Subdomain name to append to :data:`SERVER_NAME`.
:param url_scheme: Scheme to use instead of
:data:`PREFERRED_URL_SCHEME`.
:param json: If given, this is serialized as JSON and passed as
``data``. Also defaults ``content_type`` to
``application/json``.
:param args: other positional arguments passed to
:class:`~werkzeug.test.EnvironBuilder`.
:param kwargs: other keyword arguments passed to
:class:`~werkzeug.test.EnvironBuilder`.
"""
def __init__(
self,
app,
path="/",
base_url=None,
subdomain=None,
url_scheme=None,
*args,
**kwargs
):
assert not (base_url or subdomain or url_scheme) or (
base_url is not None
) != bool(
subdomain or url_scheme
), 'Cannot pass "subdomain" or "url_scheme" with "base_url".'
if base_url is None:
http_host = app.config.get("SERVER_NAME") or "localhost"
app_root = app.config["APPLICATION_ROOT"]
if subdomain:
http_host = "{0}.{1}".format(subdomain, http_host)
if url_scheme is None:
url_scheme = app.config["PREFERRED_URL_SCHEME"]
url = url_parse(path)
base_url = "{scheme}://{netloc}/{path}".format(
scheme=url.scheme or url_scheme,
netloc=url.netloc or http_host,
path=app_root.lstrip("/"),
)
path = url.path
if url.query:
sep = b"?" if isinstance(url.query, bytes) else "?"
path += sep + url.query
self.app = app
super(EnvironBuilder, self).__init__(path, base_url, *args, **kwargs)
def json_dumps(self, obj, **kwargs):
"""Serialize ``obj`` to a JSON-formatted string.
The serialization will be configured according to the config associated
with this EnvironBuilder's ``app``.
"""
kwargs.setdefault("app", self.app)
return json_dumps(obj, **kwargs)
def make_test_environ_builder(*args, **kwargs):
"""Create a :class:`flask.testing.EnvironBuilder`.
.. deprecated: 1.1
Will be removed in 2.0. Construct
``flask.testing.EnvironBuilder`` directly instead.
"""
warnings.warn(
DeprecationWarning(
'"make_test_environ_builder()" is deprecated and will be'
' removed in 2.0. Construct "flask.testing.EnvironBuilder"'
" directly instead."
)
)
return EnvironBuilder(*args, **kwargs)
class FlaskClient(Client):
"""Works like a regular Werkzeug test client but has some knowledge about
how Flask works to defer the cleanup of the request context stack to the
end of a ``with`` body when used in a ``with`` statement. For general
information about how to use this class refer to
:class:`werkzeug.test.Client`.
.. versionchanged:: 0.12
`app.test_client()` includes preset default environment, which can be
set after instantiation of the `app.test_client()` object in
`client.environ_base`.
Basic usage is outlined in the :ref:`testing` chapter.
"""
preserve_context = False
def __init__(self, *args, **kwargs):
super(FlaskClient, self).__init__(*args, **kwargs)
self.environ_base = {
"REMOTE_ADDR": "127.0.0.1",
"HTTP_USER_AGENT": "werkzeug/" + werkzeug.__version__,
}
@contextmanager
def session_transaction(self, *args, **kwargs):
"""When used in combination with a ``with`` statement this opens a
session transaction. This can be used to modify the session that
the test client uses. Once the ``with`` block is left the session is
stored back.
::
with client.session_transaction() as session:
session['value'] = 42
Internally this is implemented by going through a temporary test
request context and since session handling could depend on
request variables this function accepts the same arguments as
:meth:`~flask.Flask.test_request_context` which are directly
passed through.
"""
if self.cookie_jar is None:
raise RuntimeError(
"Session transactions only make sense with cookies enabled."
)
app = self.application
environ_overrides = kwargs.setdefault("environ_overrides", {})
self.cookie_jar.inject_wsgi(environ_overrides)
outer_reqctx = _request_ctx_stack.top
with app.test_request_context(*args, **kwargs) as c:
session_interface = app.session_interface
sess = session_interface.open_session(app, c.request)
if sess is None:
raise RuntimeError(
"Session backend did not open a session. Check the configuration"
)
# Since we have to open a new request context for the session
# handling we want to make sure that we hide out own context
# from the caller. By pushing the original request context
# (or None) on top of this and popping it we get exactly that
# behavior. It's important to not use the push and pop
# methods of the actual request context object since that would
# mean that cleanup handlers are called
_request_ctx_stack.push(outer_reqctx)
try:
yield sess
finally:
_request_ctx_stack.pop()
resp = app.response_class()
if not session_interface.is_null_session(sess):
session_interface.save_session(app, sess, resp)
headers = resp.get_wsgi_headers(c.request.environ)
self.cookie_jar.extract_wsgi(c.request.environ, headers)
def open(self, *args, **kwargs):
as_tuple = kwargs.pop("as_tuple", False)
buffered = kwargs.pop("buffered", False)
follow_redirects = kwargs.pop("follow_redirects", False)
if (
not kwargs
and len(args) == 1
and isinstance(args[0], (werkzeug.test.EnvironBuilder, dict))
):
environ = self.environ_base.copy()
if isinstance(args[0], werkzeug.test.EnvironBuilder):
environ.update(args[0].get_environ())
else:
environ.update(args[0])
environ["flask._preserve_context"] = self.preserve_context
else:
kwargs.setdefault("environ_overrides", {})[
"flask._preserve_context"
] = self.preserve_context
kwargs.setdefault("environ_base", self.environ_base)
builder = EnvironBuilder(self.application, *args, **kwargs)
try:
environ = builder.get_environ()
finally:
builder.close()
return Client.open(
self,
environ,
as_tuple=as_tuple,
buffered=buffered,
follow_redirects=follow_redirects,
)
def __enter__(self):
if self.preserve_context:
raise RuntimeError("Cannot nest client invocations")
self.preserve_context = True
return self
def __exit__(self, exc_type, exc_value, tb):
self.preserve_context = False
# Normally the request context is preserved until the next
# request in the same thread comes. When the client exits we
# want to clean up earlier. Pop request contexts until the stack
# is empty or a non-preserved one is found.
while True:
top = _request_ctx_stack.top
if top is not None and top.preserved:
top.pop()
else:
break
class FlaskCliRunner(CliRunner):
"""A :class:`~click.testing.CliRunner` for testing a Flask app's
CLI commands. Typically created using
:meth:`~flask.Flask.test_cli_runner`. See :ref:`testing-cli`.
"""
def __init__(self, app, **kwargs):
self.app = app
super(FlaskCliRunner, self).__init__(**kwargs)
def invoke(self, cli=None, args=None, **kwargs):
"""Invokes a CLI command in an isolated environment. See
:meth:`CliRunner.invoke <click.testing.CliRunner.invoke>` for
full method documentation. See :ref:`testing-cli` for examples.
If the ``obj`` argument is not given, passes an instance of
:class:`~flask.cli.ScriptInfo` that knows how to load the Flask
app being tested.
:param cli: Command object to invoke. Default is the app's
:attr:`~flask.app.Flask.cli` group.
:param args: List of strings to invoke the command with.
:return: a :class:`~click.testing.Result` object.
"""
if cli is None:
cli = self.app.cli
if "obj" not in kwargs:
kwargs["obj"] = ScriptInfo(create_app=lambda: self.app)
return super(FlaskCliRunner, self).invoke(cli, args, **kwargs)
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/flask/helpers.py
|
# -*- coding: utf-8 -*-
"""
flask.helpers
~~~~~~~~~~~~~
Implements various helpers.
:copyright: 2010 Pallets
:license: BSD-3-Clause
"""
import io
import mimetypes
import os
import pkgutil
import posixpath
import socket
import sys
import unicodedata
from functools import update_wrapper
from threading import RLock
from time import time
from zlib import adler32
from jinja2 import FileSystemLoader
from werkzeug.datastructures import Headers
from werkzeug.exceptions import BadRequest
from werkzeug.exceptions import NotFound
from werkzeug.exceptions import RequestedRangeNotSatisfiable
from werkzeug.routing import BuildError
from werkzeug.urls import url_quote
from werkzeug.wsgi import wrap_file
from ._compat import fspath
from ._compat import PY2
from ._compat import string_types
from ._compat import text_type
from .globals import _app_ctx_stack
from .globals import _request_ctx_stack
from .globals import current_app
from .globals import request
from .globals import session
from .signals import message_flashed
# sentinel
_missing = object()
# what separators does this operating system provide that are not a slash?
# this is used by the send_from_directory function to ensure that nobody is
# able to access files from outside the filesystem.
_os_alt_seps = list(
sep for sep in [os.path.sep, os.path.altsep] if sep not in (None, "/")
)
def get_env():
"""Get the environment the app is running in, indicated by the
:envvar:`FLASK_ENV` environment variable. The default is
``'production'``.
"""
return os.environ.get("FLASK_ENV") or "production"
def get_debug_flag():
"""Get whether debug mode should be enabled for the app, indicated
by the :envvar:`FLASK_DEBUG` environment variable. The default is
``True`` if :func:`.get_env` returns ``'development'``, or ``False``
otherwise.
"""
val = os.environ.get("FLASK_DEBUG")
if not val:
return get_env() == "development"
return val.lower() not in ("0", "false", "no")
def get_load_dotenv(default=True):
"""Get whether the user has disabled loading dotenv files by setting
:envvar:`FLASK_SKIP_DOTENV`. The default is ``True``, load the
files.
:param default: What to return if the env var isn't set.
"""
val = os.environ.get("FLASK_SKIP_DOTENV")
if not val:
return default
return val.lower() in ("0", "false", "no")
def _endpoint_from_view_func(view_func):
"""Internal helper that returns the default endpoint for a given
function. This always is the function name.
"""
assert view_func is not None, "expected view func if endpoint is not provided."
return view_func.__name__
def stream_with_context(generator_or_function):
"""Request contexts disappear when the response is started on the server.
This is done for efficiency reasons and to make it less likely to encounter
memory leaks with badly written WSGI middlewares. The downside is that if
you are using streamed responses, the generator cannot access request bound
information any more.
This function however can help you keep the context around for longer::
from flask import stream_with_context, request, Response
@app.route('/stream')
def streamed_response():
@stream_with_context
def generate():
yield 'Hello '
yield request.args['name']
yield '!'
return Response(generate())
Alternatively it can also be used around a specific generator::
from flask import stream_with_context, request, Response
@app.route('/stream')
def streamed_response():
def generate():
yield 'Hello '
yield request.args['name']
yield '!'
return Response(stream_with_context(generate()))
.. versionadded:: 0.9
"""
try:
gen = iter(generator_or_function)
except TypeError:
def decorator(*args, **kwargs):
gen = generator_or_function(*args, **kwargs)
return stream_with_context(gen)
return update_wrapper(decorator, generator_or_function)
def generator():
ctx = _request_ctx_stack.top
if ctx is None:
raise RuntimeError(
"Attempted to stream with context but "
"there was no context in the first place to keep around."
)
with ctx:
# Dummy sentinel. Has to be inside the context block or we're
# not actually keeping the context around.
yield None
# The try/finally is here so that if someone passes a WSGI level
# iterator in we're still running the cleanup logic. Generators
# don't need that because they are closed on their destruction
# automatically.
try:
for item in gen:
yield item
finally:
if hasattr(gen, "close"):
gen.close()
# The trick is to start the generator. Then the code execution runs until
# the first dummy None is yielded at which point the context was already
# pushed. This item is discarded. Then when the iteration continues the
# real generator is executed.
wrapped_g = generator()
next(wrapped_g)
return wrapped_g
def make_response(*args):
"""Sometimes it is necessary to set additional headers in a view. Because
views do not have to return response objects but can return a value that
is converted into a response object by Flask itself, it becomes tricky to
add headers to it. This function can be called instead of using a return
and you will get a response object which you can use to attach headers.
If view looked like this and you want to add a new header::
def index():
return render_template('index.html', foo=42)
You can now do something like this::
def index():
response = make_response(render_template('index.html', foo=42))
response.headers['X-Parachutes'] = 'parachutes are cool'
return response
This function accepts the very same arguments you can return from a
view function. This for example creates a response with a 404 error
code::
response = make_response(render_template('not_found.html'), 404)
The other use case of this function is to force the return value of a
view function into a response which is helpful with view
decorators::
response = make_response(view_function())
response.headers['X-Parachutes'] = 'parachutes are cool'
Internally this function does the following things:
- if no arguments are passed, it creates a new response argument
- if one argument is passed, :meth:`flask.Flask.make_response`
is invoked with it.
- if more than one argument is passed, the arguments are passed
to the :meth:`flask.Flask.make_response` function as tuple.
.. versionadded:: 0.6
"""
if not args:
return current_app.response_class()
if len(args) == 1:
args = args[0]
return current_app.make_response(args)
def url_for(endpoint, **values):
"""Generates a URL to the given endpoint with the method provided.
Variable arguments that are unknown to the target endpoint are appended
to the generated URL as query arguments. If the value of a query argument
is ``None``, the whole pair is skipped. In case blueprints are active
you can shortcut references to the same blueprint by prefixing the
local endpoint with a dot (``.``).
This will reference the index function local to the current blueprint::
url_for('.index')
For more information, head over to the :ref:`Quickstart <url-building>`.
Configuration values ``APPLICATION_ROOT`` and ``SERVER_NAME`` are only used when
generating URLs outside of a request context.
To integrate applications, :class:`Flask` has a hook to intercept URL build
errors through :attr:`Flask.url_build_error_handlers`. The `url_for`
function results in a :exc:`~werkzeug.routing.BuildError` when the current
app does not have a URL for the given endpoint and values. When it does, the
:data:`~flask.current_app` calls its :attr:`~Flask.url_build_error_handlers` if
it is not ``None``, which can return a string to use as the result of
`url_for` (instead of `url_for`'s default to raise the
:exc:`~werkzeug.routing.BuildError` exception) or re-raise the exception.
An example::
def external_url_handler(error, endpoint, values):
"Looks up an external URL when `url_for` cannot build a URL."
# This is an example of hooking the build_error_handler.
# Here, lookup_url is some utility function you've built
# which looks up the endpoint in some external URL registry.
url = lookup_url(endpoint, **values)
if url is None:
# External lookup did not have a URL.
# Re-raise the BuildError, in context of original traceback.
exc_type, exc_value, tb = sys.exc_info()
if exc_value is error:
raise exc_type, exc_value, tb
else:
raise error
# url_for will use this result, instead of raising BuildError.
return url
app.url_build_error_handlers.append(external_url_handler)
Here, `error` is the instance of :exc:`~werkzeug.routing.BuildError`, and
`endpoint` and `values` are the arguments passed into `url_for`. Note
that this is for building URLs outside the current application, and not for
handling 404 NotFound errors.
.. versionadded:: 0.10
The `_scheme` parameter was added.
.. versionadded:: 0.9
The `_anchor` and `_method` parameters were added.
.. versionadded:: 0.9
Calls :meth:`Flask.handle_build_error` on
:exc:`~werkzeug.routing.BuildError`.
:param endpoint: the endpoint of the URL (name of the function)
:param values: the variable arguments of the URL rule
:param _external: if set to ``True``, an absolute URL is generated. Server
address can be changed via ``SERVER_NAME`` configuration variable which
falls back to the `Host` header, then to the IP and port of the request.
:param _scheme: a string specifying the desired URL scheme. The `_external`
parameter must be set to ``True`` or a :exc:`ValueError` is raised. The default
behavior uses the same scheme as the current request, or
``PREFERRED_URL_SCHEME`` from the :ref:`app configuration <config>` if no
request context is available. As of Werkzeug 0.10, this also can be set
to an empty string to build protocol-relative URLs.
:param _anchor: if provided this is added as anchor to the URL.
:param _method: if provided this explicitly specifies an HTTP method.
"""
appctx = _app_ctx_stack.top
reqctx = _request_ctx_stack.top
if appctx is None:
raise RuntimeError(
"Attempted to generate a URL without the application context being"
" pushed. This has to be executed when application context is"
" available."
)
# If request specific information is available we have some extra
# features that support "relative" URLs.
if reqctx is not None:
url_adapter = reqctx.url_adapter
blueprint_name = request.blueprint
if endpoint[:1] == ".":
if blueprint_name is not None:
endpoint = blueprint_name + endpoint
else:
endpoint = endpoint[1:]
external = values.pop("_external", False)
# Otherwise go with the url adapter from the appctx and make
# the URLs external by default.
else:
url_adapter = appctx.url_adapter
if url_adapter is None:
raise RuntimeError(
"Application was not able to create a URL adapter for request"
" independent URL generation. You might be able to fix this by"
" setting the SERVER_NAME config variable."
)
external = values.pop("_external", True)
anchor = values.pop("_anchor", None)
method = values.pop("_method", None)
scheme = values.pop("_scheme", None)
appctx.app.inject_url_defaults(endpoint, values)
# This is not the best way to deal with this but currently the
# underlying Werkzeug router does not support overriding the scheme on
# a per build call basis.
old_scheme = None
if scheme is not None:
if not external:
raise ValueError("When specifying _scheme, _external must be True")
old_scheme = url_adapter.url_scheme
url_adapter.url_scheme = scheme
try:
try:
rv = url_adapter.build(
endpoint, values, method=method, force_external=external
)
finally:
if old_scheme is not None:
url_adapter.url_scheme = old_scheme
except BuildError as error:
# We need to inject the values again so that the app callback can
# deal with that sort of stuff.
values["_external"] = external
values["_anchor"] = anchor
values["_method"] = method
values["_scheme"] = scheme
return appctx.app.handle_url_build_error(error, endpoint, values)
if anchor is not None:
rv += "#" + url_quote(anchor)
return rv
def get_template_attribute(template_name, attribute):
"""Loads a macro (or variable) a template exports. This can be used to
invoke a macro from within Python code. If you for example have a
template named :file:`_cider.html` with the following contents:
.. sourcecode:: html+jinja
{% macro hello(name) %}Hello {{ name }}!{% endmacro %}
You can access this from Python code like this::
hello = get_template_attribute('_cider.html', 'hello')
return hello('World')
.. versionadded:: 0.2
:param template_name: the name of the template
:param attribute: the name of the variable of macro to access
"""
return getattr(current_app.jinja_env.get_template(template_name).module, attribute)
def flash(message, category="message"):
"""Flashes a message to the next request. In order to remove the
flashed message from the session and to display it to the user,
the template has to call :func:`get_flashed_messages`.
.. versionchanged:: 0.3
`category` parameter added.
:param message: the message to be flashed.
:param category: the category for the message. The following values
are recommended: ``'message'`` for any kind of message,
``'error'`` for errors, ``'info'`` for information
messages and ``'warning'`` for warnings. However any
kind of string can be used as category.
"""
# Original implementation:
#
# session.setdefault('_flashes', []).append((category, message))
#
# This assumed that changes made to mutable structures in the session are
# always in sync with the session object, which is not true for session
# implementations that use external storage for keeping their keys/values.
flashes = session.get("_flashes", [])
flashes.append((category, message))
session["_flashes"] = flashes
message_flashed.send(
current_app._get_current_object(), message=message, category=category
)
def get_flashed_messages(with_categories=False, category_filter=()):
"""Pulls all flashed messages from the session and returns them.
Further calls in the same request to the function will return
the same messages. By default just the messages are returned,
but when `with_categories` is set to ``True``, the return value will
be a list of tuples in the form ``(category, message)`` instead.
Filter the flashed messages to one or more categories by providing those
categories in `category_filter`. This allows rendering categories in
separate html blocks. The `with_categories` and `category_filter`
arguments are distinct:
* `with_categories` controls whether categories are returned with message
text (``True`` gives a tuple, where ``False`` gives just the message text).
* `category_filter` filters the messages down to only those matching the
provided categories.
See :ref:`message-flashing-pattern` for examples.
.. versionchanged:: 0.3
`with_categories` parameter added.
.. versionchanged:: 0.9
`category_filter` parameter added.
:param with_categories: set to ``True`` to also receive categories.
:param category_filter: whitelist of categories to limit return values
"""
flashes = _request_ctx_stack.top.flashes
if flashes is None:
_request_ctx_stack.top.flashes = flashes = (
session.pop("_flashes") if "_flashes" in session else []
)
if category_filter:
flashes = list(filter(lambda f: f[0] in category_filter, flashes))
if not with_categories:
return [x[1] for x in flashes]
return flashes
def send_file(
filename_or_fp,
mimetype=None,
as_attachment=False,
attachment_filename=None,
add_etags=True,
cache_timeout=None,
conditional=False,
last_modified=None,
):
"""Sends the contents of a file to the client. This will use the
most efficient method available and configured. By default it will
try to use the WSGI server's file_wrapper support. Alternatively
you can set the application's :attr:`~Flask.use_x_sendfile` attribute
to ``True`` to directly emit an ``X-Sendfile`` header. This however
requires support of the underlying webserver for ``X-Sendfile``.
By default it will try to guess the mimetype for you, but you can
also explicitly provide one. For extra security you probably want
to send certain files as attachment (HTML for instance). The mimetype
guessing requires a `filename` or an `attachment_filename` to be
provided.
ETags will also be attached automatically if a `filename` is provided. You
can turn this off by setting `add_etags=False`.
If `conditional=True` and `filename` is provided, this method will try to
upgrade the response stream to support range requests. This will allow
the request to be answered with partial content response.
Please never pass filenames to this function from user sources;
you should use :func:`send_from_directory` instead.
.. versionadded:: 0.2
.. versionadded:: 0.5
The `add_etags`, `cache_timeout` and `conditional` parameters were
added. The default behavior is now to attach etags.
.. versionchanged:: 0.7
mimetype guessing and etag support for file objects was
deprecated because it was unreliable. Pass a filename if you are
able to, otherwise attach an etag yourself. This functionality
will be removed in Flask 1.0
.. versionchanged:: 0.9
cache_timeout pulls its default from application config, when None.
.. versionchanged:: 0.12
The filename is no longer automatically inferred from file objects. If
you want to use automatic mimetype and etag support, pass a filepath via
`filename_or_fp` or `attachment_filename`.
.. versionchanged:: 0.12
The `attachment_filename` is preferred over `filename` for MIME-type
detection.
.. versionchanged:: 1.0
UTF-8 filenames, as specified in `RFC 2231`_, are supported.
.. _RFC 2231: https://tools.ietf.org/html/rfc2231#section-4
.. versionchanged:: 1.0.3
Filenames are encoded with ASCII instead of Latin-1 for broader
compatibility with WSGI servers.
.. versionchanged:: 1.1
Filename may be a :class:`~os.PathLike` object.
.. versionadded:: 1.1
Partial content supports :class:`~io.BytesIO`.
:param filename_or_fp: the filename of the file to send.
This is relative to the :attr:`~Flask.root_path`
if a relative path is specified.
Alternatively a file object might be provided in
which case ``X-Sendfile`` might not work and fall
back to the traditional method. Make sure that the
file pointer is positioned at the start of data to
send before calling :func:`send_file`.
:param mimetype: the mimetype of the file if provided. If a file path is
given, auto detection happens as fallback, otherwise an
error will be raised.
:param as_attachment: set to ``True`` if you want to send this file with
a ``Content-Disposition: attachment`` header.
:param attachment_filename: the filename for the attachment if it
differs from the file's filename.
:param add_etags: set to ``False`` to disable attaching of etags.
:param conditional: set to ``True`` to enable conditional responses.
:param cache_timeout: the timeout in seconds for the headers. When ``None``
(default), this value is set by
:meth:`~Flask.get_send_file_max_age` of
:data:`~flask.current_app`.
:param last_modified: set the ``Last-Modified`` header to this value,
a :class:`~datetime.datetime` or timestamp.
If a file was passed, this overrides its mtime.
"""
mtime = None
fsize = None
if hasattr(filename_or_fp, "__fspath__"):
filename_or_fp = fspath(filename_or_fp)
if isinstance(filename_or_fp, string_types):
filename = filename_or_fp
if not os.path.isabs(filename):
filename = os.path.join(current_app.root_path, filename)
file = None
if attachment_filename is None:
attachment_filename = os.path.basename(filename)
else:
file = filename_or_fp
filename = None
if mimetype is None:
if attachment_filename is not None:
mimetype = (
mimetypes.guess_type(attachment_filename)[0]
or "application/octet-stream"
)
if mimetype is None:
raise ValueError(
"Unable to infer MIME-type because no filename is available. "
"Please set either `attachment_filename`, pass a filepath to "
"`filename_or_fp` or set your own MIME-type via `mimetype`."
)
headers = Headers()
if as_attachment:
if attachment_filename is None:
raise TypeError("filename unavailable, required for sending as attachment")
if not isinstance(attachment_filename, text_type):
attachment_filename = attachment_filename.decode("utf-8")
try:
attachment_filename = attachment_filename.encode("ascii")
except UnicodeEncodeError:
filenames = {
"filename": unicodedata.normalize("NFKD", attachment_filename).encode(
"ascii", "ignore"
),
"filename*": "UTF-8''%s" % url_quote(attachment_filename, safe=b""),
}
else:
filenames = {"filename": attachment_filename}
headers.add("Content-Disposition", "attachment", **filenames)
if current_app.use_x_sendfile and filename:
if file is not None:
file.close()
headers["X-Sendfile"] = filename
fsize = os.path.getsize(filename)
headers["Content-Length"] = fsize
data = None
else:
if file is None:
file = open(filename, "rb")
mtime = os.path.getmtime(filename)
fsize = os.path.getsize(filename)
headers["Content-Length"] = fsize
elif isinstance(file, io.BytesIO):
try:
fsize = file.getbuffer().nbytes
except AttributeError:
# Python 2 doesn't have getbuffer
fsize = len(file.getvalue())
headers["Content-Length"] = fsize
data = wrap_file(request.environ, file)
rv = current_app.response_class(
data, mimetype=mimetype, headers=headers, direct_passthrough=True
)
if last_modified is not None:
rv.last_modified = last_modified
elif mtime is not None:
rv.last_modified = mtime
rv.cache_control.public = True
if cache_timeout is None:
cache_timeout = current_app.get_send_file_max_age(filename)
if cache_timeout is not None:
rv.cache_control.max_age = cache_timeout
rv.expires = int(time() + cache_timeout)
if add_etags and filename is not None:
from warnings import warn
try:
rv.set_etag(
"%s-%s-%s"
% (
os.path.getmtime(filename),
os.path.getsize(filename),
adler32(
filename.encode("utf-8")
if isinstance(filename, text_type)
else filename
)
& 0xFFFFFFFF,
)
)
except OSError:
warn(
"Access %s failed, maybe it does not exist, so ignore etags in "
"headers" % filename,
stacklevel=2,
)
if conditional:
try:
rv = rv.make_conditional(request, accept_ranges=True, complete_length=fsize)
except RequestedRangeNotSatisfiable:
if file is not None:
file.close()
raise
# make sure we don't send x-sendfile for servers that
# ignore the 304 status code for x-sendfile.
if rv.status_code == 304:
rv.headers.pop("x-sendfile", None)
return rv
def safe_join(directory, *pathnames):
"""Safely join `directory` and zero or more untrusted `pathnames`
components.
Example usage::
@app.route('/wiki/<path:filename>')
def wiki_page(filename):
filename = safe_join(app.config['WIKI_FOLDER'], filename)
with open(filename, 'rb') as fd:
content = fd.read() # Read and process the file content...
:param directory: the trusted base directory.
:param pathnames: the untrusted pathnames relative to that directory.
:raises: :class:`~werkzeug.exceptions.NotFound` if one or more passed
paths fall out of its boundaries.
"""
parts = [directory]
for filename in pathnames:
if filename != "":
filename = posixpath.normpath(filename)
if (
any(sep in filename for sep in _os_alt_seps)
or os.path.isabs(filename)
or filename == ".."
or filename.startswith("../")
):
raise NotFound()
parts.append(filename)
return posixpath.join(*parts)
def send_from_directory(directory, filename, **options):
"""Send a file from a given directory with :func:`send_file`. This
is a secure way to quickly expose static files from an upload folder
or something similar.
Example usage::
@app.route('/uploads/<path:filename>')
def download_file(filename):
return send_from_directory(app.config['UPLOAD_FOLDER'],
filename, as_attachment=True)
.. admonition:: Sending files and Performance
It is strongly recommended to activate either ``X-Sendfile`` support in
your webserver or (if no authentication happens) to tell the webserver
to serve files for the given path on its own without calling into the
web application for improved performance.
.. versionadded:: 0.5
:param directory: the directory where all the files are stored.
:param filename: the filename relative to that directory to
download.
:param options: optional keyword arguments that are directly
forwarded to :func:`send_file`.
"""
filename = fspath(filename)
directory = fspath(directory)
filename = safe_join(directory, filename)
if not os.path.isabs(filename):
filename = os.path.join(current_app.root_path, filename)
try:
if not os.path.isfile(filename):
raise NotFound()
except (TypeError, ValueError):
raise BadRequest()
options.setdefault("conditional", True)
return send_file(filename, **options)
def get_root_path(import_name):
"""Returns the path to a package or cwd if that cannot be found. This
returns the path of a package or the folder that contains a module.
Not to be confused with the package path returned by :func:`find_package`.
"""
# Module already imported and has a file attribute. Use that first.
mod = sys.modules.get(import_name)
if mod is not None and hasattr(mod, "__file__"):
return os.path.dirname(os.path.abspath(mod.__file__))
# Next attempt: check the loader.
loader = pkgutil.get_loader(import_name)
# Loader does not exist or we're referring to an unloaded main module
# or a main module without path (interactive sessions), go with the
# current working directory.
if loader is None or import_name == "__main__":
return os.getcwd()
# For .egg, zipimporter does not have get_filename until Python 2.7.
# Some other loaders might exhibit the same behavior.
if hasattr(loader, "get_filename"):
filepath = loader.get_filename(import_name)
else:
# Fall back to imports.
__import__(import_name)
mod = sys.modules[import_name]
filepath = getattr(mod, "__file__", None)
# If we don't have a filepath it might be because we are a
# namespace package. In this case we pick the root path from the
# first module that is contained in our package.
if filepath is None:
raise RuntimeError(
"No root path can be found for the provided "
'module "%s". This can happen because the '
"module came from an import hook that does "
"not provide file name information or because "
"it's a namespace package. In this case "
"the root path needs to be explicitly "
"provided." % import_name
)
# filepath is import_name.py for a module, or __init__.py for a package.
return os.path.dirname(os.path.abspath(filepath))
def _matching_loader_thinks_module_is_package(loader, mod_name):
"""Given the loader that loaded a module and the module this function
attempts to figure out if the given module is actually a package.
"""
# If the loader can tell us if something is a package, we can
# directly ask the loader.
if hasattr(loader, "is_package"):
return loader.is_package(mod_name)
# importlib's namespace loaders do not have this functionality but
# all the modules it loads are packages, so we can take advantage of
# this information.
elif (
loader.__class__.__module__ == "_frozen_importlib"
and loader.__class__.__name__ == "NamespaceLoader"
):
return True
# Otherwise we need to fail with an error that explains what went
# wrong.
raise AttributeError(
(
"%s.is_package() method is missing but is required by Flask of "
"PEP 302 import hooks. If you do not use import hooks and "
"you encounter this error please file a bug against Flask."
)
% loader.__class__.__name__
)
def _find_package_path(root_mod_name):
"""Find the path where the module's root exists in"""
if sys.version_info >= (3, 4):
import importlib.util
try:
spec = importlib.util.find_spec(root_mod_name)
if spec is None:
raise ValueError("not found")
# ImportError: the machinery told us it does not exist
# ValueError:
# - the module name was invalid
# - the module name is __main__
# - *we* raised `ValueError` due to `spec` being `None`
except (ImportError, ValueError):
pass # handled below
else:
# namespace package
if spec.origin in {"namespace", None}:
return os.path.dirname(next(iter(spec.submodule_search_locations)))
# a package (with __init__.py)
elif spec.submodule_search_locations:
return os.path.dirname(os.path.dirname(spec.origin))
# just a normal module
else:
return os.path.dirname(spec.origin)
# we were unable to find the `package_path` using PEP 451 loaders
loader = pkgutil.get_loader(root_mod_name)
if loader is None or root_mod_name == "__main__":
# import name is not found, or interactive/main module
return os.getcwd()
else:
# For .egg, zipimporter does not have get_filename until Python 2.7.
if hasattr(loader, "get_filename"):
filename = loader.get_filename(root_mod_name)
elif hasattr(loader, "archive"):
# zipimporter's loader.archive points to the .egg or .zip
# archive filename is dropped in call to dirname below.
filename = loader.archive
else:
# At least one loader is missing both get_filename and archive:
# Google App Engine's HardenedModulesHook
#
# Fall back to imports.
__import__(root_mod_name)
filename = sys.modules[root_mod_name].__file__
package_path = os.path.abspath(os.path.dirname(filename))
# In case the root module is a package we need to chop of the
# rightmost part. This needs to go through a helper function
# because of python 3.3 namespace packages.
if _matching_loader_thinks_module_is_package(loader, root_mod_name):
package_path = os.path.dirname(package_path)
return package_path
def find_package(import_name):
"""Finds a package and returns the prefix (or None if the package is
not installed) as well as the folder that contains the package or
module as a tuple. The package path returned is the module that would
have to be added to the pythonpath in order to make it possible to
import the module. The prefix is the path below which a UNIX like
folder structure exists (lib, share etc.).
"""
root_mod_name, _, _ = import_name.partition(".")
package_path = _find_package_path(root_mod_name)
site_parent, site_folder = os.path.split(package_path)
py_prefix = os.path.abspath(sys.prefix)
if package_path.startswith(py_prefix):
return py_prefix, package_path
elif site_folder.lower() == "site-packages":
parent, folder = os.path.split(site_parent)
# Windows like installations
if folder.lower() == "lib":
base_dir = parent
# UNIX like installations
elif os.path.basename(parent).lower() == "lib":
base_dir = os.path.dirname(parent)
else:
base_dir = site_parent
return base_dir, package_path
return None, package_path
class locked_cached_property(object):
"""A decorator that converts a function into a lazy property. The
function wrapped is called the first time to retrieve the result
and then that calculated result is used the next time you access
the value. Works like the one in Werkzeug but has a lock for
thread safety.
"""
def __init__(self, func, name=None, doc=None):
self.__name__ = name or func.__name__
self.__module__ = func.__module__
self.__doc__ = doc or func.__doc__
self.func = func
self.lock = RLock()
def __get__(self, obj, type=None):
if obj is None:
return self
with self.lock:
value = obj.__dict__.get(self.__name__, _missing)
if value is _missing:
value = self.func(obj)
obj.__dict__[self.__name__] = value
return value
class _PackageBoundObject(object):
#: The name of the package or module that this app belongs to. Do not
#: change this once it is set by the constructor.
import_name = None
#: Location of the template files to be added to the template lookup.
#: ``None`` if templates should not be added.
template_folder = None
#: Absolute path to the package on the filesystem. Used to look up
#: resources contained in the package.
root_path = None
def __init__(self, import_name, template_folder=None, root_path=None):
self.import_name = import_name
self.template_folder = template_folder
if root_path is None:
root_path = get_root_path(self.import_name)
self.root_path = root_path
self._static_folder = None
self._static_url_path = None
# circular import
from .cli import AppGroup
#: The Click command group for registration of CLI commands
#: on the application and associated blueprints. These commands
#: are accessible via the :command:`flask` command once the
#: application has been discovered and blueprints registered.
self.cli = AppGroup()
@property
def static_folder(self):
"""The absolute path to the configured static folder."""
if self._static_folder is not None:
return os.path.join(self.root_path, self._static_folder)
@static_folder.setter
def static_folder(self, value):
if value is not None:
value = value.rstrip("/\\")
self._static_folder = value
@property
def static_url_path(self):
"""The URL prefix that the static route will be accessible from.
If it was not configured during init, it is derived from
:attr:`static_folder`.
"""
if self._static_url_path is not None:
return self._static_url_path
if self.static_folder is not None:
basename = os.path.basename(self.static_folder)
return ("/" + basename).rstrip("/")
@static_url_path.setter
def static_url_path(self, value):
if value is not None:
value = value.rstrip("/")
self._static_url_path = value
@property
def has_static_folder(self):
"""This is ``True`` if the package bound object's container has a
folder for static files.
.. versionadded:: 0.5
"""
return self.static_folder is not None
@locked_cached_property
def jinja_loader(self):
"""The Jinja loader for this package bound object.
.. versionadded:: 0.5
"""
if self.template_folder is not None:
return FileSystemLoader(os.path.join(self.root_path, self.template_folder))
def get_send_file_max_age(self, filename):
"""Provides default cache_timeout for the :func:`send_file` functions.
By default, this function returns ``SEND_FILE_MAX_AGE_DEFAULT`` from
the configuration of :data:`~flask.current_app`.
Static file functions such as :func:`send_from_directory` use this
function, and :func:`send_file` calls this function on
:data:`~flask.current_app` when the given cache_timeout is ``None``. If a
cache_timeout is given in :func:`send_file`, that timeout is used;
otherwise, this method is called.
This allows subclasses to change the behavior when sending files based
on the filename. For example, to set the cache timeout for .js files
to 60 seconds::
class MyFlask(flask.Flask):
def get_send_file_max_age(self, name):
if name.lower().endswith('.js'):
return 60
return flask.Flask.get_send_file_max_age(self, name)
.. versionadded:: 0.9
"""
return total_seconds(current_app.send_file_max_age_default)
def send_static_file(self, filename):
"""Function used internally to send static files from the static
folder to the browser.
.. versionadded:: 0.5
"""
if not self.has_static_folder:
raise RuntimeError("No static folder for this object")
# Ensure get_send_file_max_age is called in all cases.
# Here, we ensure get_send_file_max_age is called for Blueprints.
cache_timeout = self.get_send_file_max_age(filename)
return send_from_directory(
self.static_folder, filename, cache_timeout=cache_timeout
)
def open_resource(self, resource, mode="rb"):
"""Opens a resource from the application's resource folder. To see
how this works, consider the following folder structure::
/myapplication.py
/schema.sql
/static
/style.css
/templates
/layout.html
/index.html
If you want to open the :file:`schema.sql` file you would do the
following::
with app.open_resource('schema.sql') as f:
contents = f.read()
do_something_with(contents)
:param resource: the name of the resource. To access resources within
subfolders use forward slashes as separator.
:param mode: Open file in this mode. Only reading is supported,
valid values are "r" (or "rt") and "rb".
"""
if mode not in {"r", "rt", "rb"}:
raise ValueError("Resources can only be opened for reading")
return open(os.path.join(self.root_path, resource), mode)
def total_seconds(td):
"""Returns the total seconds from a timedelta object.
:param timedelta td: the timedelta to be converted in seconds
:returns: number of seconds
:rtype: int
"""
return td.days * 60 * 60 * 24 + td.seconds
def is_ip(value):
"""Determine if the given string is an IP address.
Python 2 on Windows doesn't provide ``inet_pton``, so this only
checks IPv4 addresses in that environment.
:param value: value to check
:type value: str
:return: True if string is an IP address
:rtype: bool
"""
if PY2 and os.name == "nt":
try:
socket.inet_aton(value)
return True
except socket.error:
return False
for family in (socket.AF_INET, socket.AF_INET6):
try:
socket.inet_pton(family, value)
except socket.error:
pass
else:
return True
return False
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/flask/__main__.py
|
# -*- coding: utf-8 -*-
"""
flask.__main__
~~~~~~~~~~~~~~
Alias for flask.run for the command line.
:copyright: 2010 Pallets
:license: BSD-3-Clause
"""
if __name__ == "__main__":
from .cli import main
main(as_module=True)
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/flask/views.py
|
# -*- coding: utf-8 -*-
"""
flask.views
~~~~~~~~~~~
This module provides class-based views inspired by the ones in Django.
:copyright: 2010 Pallets
:license: BSD-3-Clause
"""
from ._compat import with_metaclass
from .globals import request
http_method_funcs = frozenset(
["get", "post", "head", "options", "delete", "put", "trace", "patch"]
)
class View(object):
"""Alternative way to use view functions. A subclass has to implement
:meth:`dispatch_request` which is called with the view arguments from
the URL routing system. If :attr:`methods` is provided the methods
do not have to be passed to the :meth:`~flask.Flask.add_url_rule`
method explicitly::
class MyView(View):
methods = ['GET']
def dispatch_request(self, name):
return 'Hello %s!' % name
app.add_url_rule('/hello/<name>', view_func=MyView.as_view('myview'))
When you want to decorate a pluggable view you will have to either do that
when the view function is created (by wrapping the return value of
:meth:`as_view`) or you can use the :attr:`decorators` attribute::
class SecretView(View):
methods = ['GET']
decorators = [superuser_required]
def dispatch_request(self):
...
The decorators stored in the decorators list are applied one after another
when the view function is created. Note that you can *not* use the class
based decorators since those would decorate the view class and not the
generated view function!
"""
#: A list of methods this view can handle.
methods = None
#: Setting this disables or force-enables the automatic options handling.
provide_automatic_options = None
#: The canonical way to decorate class-based views is to decorate the
#: return value of as_view(). However since this moves parts of the
#: logic from the class declaration to the place where it's hooked
#: into the routing system.
#:
#: You can place one or more decorators in this list and whenever the
#: view function is created the result is automatically decorated.
#:
#: .. versionadded:: 0.8
decorators = ()
def dispatch_request(self):
"""Subclasses have to override this method to implement the
actual view function code. This method is called with all
the arguments from the URL rule.
"""
raise NotImplementedError()
@classmethod
def as_view(cls, name, *class_args, **class_kwargs):
"""Converts the class into an actual view function that can be used
with the routing system. Internally this generates a function on the
fly which will instantiate the :class:`View` on each request and call
the :meth:`dispatch_request` method on it.
The arguments passed to :meth:`as_view` are forwarded to the
constructor of the class.
"""
def view(*args, **kwargs):
self = view.view_class(*class_args, **class_kwargs)
return self.dispatch_request(*args, **kwargs)
if cls.decorators:
view.__name__ = name
view.__module__ = cls.__module__
for decorator in cls.decorators:
view = decorator(view)
# We attach the view class to the view function for two reasons:
# first of all it allows us to easily figure out what class-based
# view this thing came from, secondly it's also used for instantiating
# the view class so you can actually replace it with something else
# for testing purposes and debugging.
view.view_class = cls
view.__name__ = name
view.__doc__ = cls.__doc__
view.__module__ = cls.__module__
view.methods = cls.methods
view.provide_automatic_options = cls.provide_automatic_options
return view
class MethodViewType(type):
"""Metaclass for :class:`MethodView` that determines what methods the view
defines.
"""
def __init__(cls, name, bases, d):
super(MethodViewType, cls).__init__(name, bases, d)
if "methods" not in d:
methods = set()
for base in bases:
if getattr(base, "methods", None):
methods.update(base.methods)
for key in http_method_funcs:
if hasattr(cls, key):
methods.add(key.upper())
# If we have no method at all in there we don't want to add a
# method list. This is for instance the case for the base class
# or another subclass of a base method view that does not introduce
# new methods.
if methods:
cls.methods = methods
class MethodView(with_metaclass(MethodViewType, View)):
"""A class-based view that dispatches request methods to the corresponding
class methods. For example, if you implement a ``get`` method, it will be
used to handle ``GET`` requests. ::
class CounterAPI(MethodView):
def get(self):
return session.get('counter', 0)
def post(self):
session['counter'] = session.get('counter', 0) + 1
return 'OK'
app.add_url_rule('/counter', view_func=CounterAPI.as_view('counter'))
"""
def dispatch_request(self, *args, **kwargs):
meth = getattr(self, request.method.lower(), None)
# If the request method is HEAD and we don't have a handler for it
# retry with GET.
if meth is None and request.method == "HEAD":
meth = getattr(self, "get", None)
assert meth is not None, "Unimplemented method %r" % request.method
return meth(*args, **kwargs)
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/flask
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/flask/json/__init__.py
|
# -*- coding: utf-8 -*-
"""
flask.json
~~~~~~~~~~
:copyright: 2010 Pallets
:license: BSD-3-Clause
"""
import codecs
import io
import uuid
from datetime import date
from datetime import datetime
from itsdangerous import json as _json
from jinja2 import Markup
from werkzeug.http import http_date
from .._compat import PY2
from .._compat import text_type
from ..globals import current_app
from ..globals import request
try:
import dataclasses
except ImportError:
dataclasses = None
# Figure out if simplejson escapes slashes. This behavior was changed
# from one version to another without reason.
_slash_escape = "\\/" not in _json.dumps("/")
__all__ = [
"dump",
"dumps",
"load",
"loads",
"htmlsafe_dump",
"htmlsafe_dumps",
"JSONDecoder",
"JSONEncoder",
"jsonify",
]
def _wrap_reader_for_text(fp, encoding):
if isinstance(fp.read(0), bytes):
fp = io.TextIOWrapper(io.BufferedReader(fp), encoding)
return fp
def _wrap_writer_for_text(fp, encoding):
try:
fp.write("")
except TypeError:
fp = io.TextIOWrapper(fp, encoding)
return fp
class JSONEncoder(_json.JSONEncoder):
"""The default Flask JSON encoder. This one extends the default
encoder by also supporting ``datetime``, ``UUID``, ``dataclasses``,
and ``Markup`` objects.
``datetime`` objects are serialized as RFC 822 datetime strings.
This is the same as the HTTP date format.
In order to support more data types, override the :meth:`default`
method.
"""
def default(self, o):
"""Implement this method in a subclass such that it returns a
serializable object for ``o``, or calls the base implementation (to
raise a :exc:`TypeError`).
For example, to support arbitrary iterators, you could implement
default like this::
def default(self, o):
try:
iterable = iter(o)
except TypeError:
pass
else:
return list(iterable)
return JSONEncoder.default(self, o)
"""
if isinstance(o, datetime):
return http_date(o.utctimetuple())
if isinstance(o, date):
return http_date(o.timetuple())
if isinstance(o, uuid.UUID):
return str(o)
if dataclasses and dataclasses.is_dataclass(o):
return dataclasses.asdict(o)
if hasattr(o, "__html__"):
return text_type(o.__html__())
return _json.JSONEncoder.default(self, o)
class JSONDecoder(_json.JSONDecoder):
"""The default JSON decoder. This one does not change the behavior from
the default simplejson decoder. Consult the :mod:`json` documentation
for more information. This decoder is not only used for the load
functions of this module but also :attr:`~flask.Request`.
"""
def _dump_arg_defaults(kwargs, app=None):
"""Inject default arguments for dump functions."""
if app is None:
app = current_app
if app:
bp = app.blueprints.get(request.blueprint) if request else None
kwargs.setdefault(
"cls", bp.json_encoder if bp and bp.json_encoder else app.json_encoder
)
if not app.config["JSON_AS_ASCII"]:
kwargs.setdefault("ensure_ascii", False)
kwargs.setdefault("sort_keys", app.config["JSON_SORT_KEYS"])
else:
kwargs.setdefault("sort_keys", True)
kwargs.setdefault("cls", JSONEncoder)
def _load_arg_defaults(kwargs, app=None):
"""Inject default arguments for load functions."""
if app is None:
app = current_app
if app:
bp = app.blueprints.get(request.blueprint) if request else None
kwargs.setdefault(
"cls", bp.json_decoder if bp and bp.json_decoder else app.json_decoder
)
else:
kwargs.setdefault("cls", JSONDecoder)
def detect_encoding(data):
"""Detect which UTF codec was used to encode the given bytes.
The latest JSON standard (:rfc:`8259`) suggests that only UTF-8 is
accepted. Older documents allowed 8, 16, or 32. 16 and 32 can be big
or little endian. Some editors or libraries may prepend a BOM.
:param data: Bytes in unknown UTF encoding.
:return: UTF encoding name
"""
head = data[:4]
if head[:3] == codecs.BOM_UTF8:
return "utf-8-sig"
if b"\x00" not in head:
return "utf-8"
if head in (codecs.BOM_UTF32_BE, codecs.BOM_UTF32_LE):
return "utf-32"
if head[:2] in (codecs.BOM_UTF16_BE, codecs.BOM_UTF16_LE):
return "utf-16"
if len(head) == 4:
if head[:3] == b"\x00\x00\x00":
return "utf-32-be"
if head[::2] == b"\x00\x00":
return "utf-16-be"
if head[1:] == b"\x00\x00\x00":
return "utf-32-le"
if head[1::2] == b"\x00\x00":
return "utf-16-le"
if len(head) == 2:
return "utf-16-be" if head.startswith(b"\x00") else "utf-16-le"
return "utf-8"
def dumps(obj, app=None, **kwargs):
"""Serialize ``obj`` to a JSON-formatted string. If there is an
app context pushed, use the current app's configured encoder
(:attr:`~flask.Flask.json_encoder`), or fall back to the default
:class:`JSONEncoder`.
Takes the same arguments as the built-in :func:`json.dumps`, and
does some extra configuration based on the application. If the
simplejson package is installed, it is preferred.
:param obj: Object to serialize to JSON.
:param app: App instance to use to configure the JSON encoder.
Uses ``current_app`` if not given, and falls back to the default
encoder when not in an app context.
:param kwargs: Extra arguments passed to :func:`json.dumps`.
.. versionchanged:: 1.0.3
``app`` can be passed directly, rather than requiring an app
context for configuration.
"""
_dump_arg_defaults(kwargs, app=app)
encoding = kwargs.pop("encoding", None)
rv = _json.dumps(obj, **kwargs)
if encoding is not None and isinstance(rv, text_type):
rv = rv.encode(encoding)
return rv
def dump(obj, fp, app=None, **kwargs):
"""Like :func:`dumps` but writes into a file object."""
_dump_arg_defaults(kwargs, app=app)
encoding = kwargs.pop("encoding", None)
if encoding is not None:
fp = _wrap_writer_for_text(fp, encoding)
_json.dump(obj, fp, **kwargs)
def loads(s, app=None, **kwargs):
"""Deserialize an object from a JSON-formatted string ``s``. If
there is an app context pushed, use the current app's configured
decoder (:attr:`~flask.Flask.json_decoder`), or fall back to the
default :class:`JSONDecoder`.
Takes the same arguments as the built-in :func:`json.loads`, and
does some extra configuration based on the application. If the
simplejson package is installed, it is preferred.
:param s: JSON string to deserialize.
:param app: App instance to use to configure the JSON decoder.
Uses ``current_app`` if not given, and falls back to the default
encoder when not in an app context.
:param kwargs: Extra arguments passed to :func:`json.dumps`.
.. versionchanged:: 1.0.3
``app`` can be passed directly, rather than requiring an app
context for configuration.
"""
_load_arg_defaults(kwargs, app=app)
if isinstance(s, bytes):
encoding = kwargs.pop("encoding", None)
if encoding is None:
encoding = detect_encoding(s)
s = s.decode(encoding)
return _json.loads(s, **kwargs)
def load(fp, app=None, **kwargs):
"""Like :func:`loads` but reads from a file object."""
_load_arg_defaults(kwargs, app=app)
if not PY2:
fp = _wrap_reader_for_text(fp, kwargs.pop("encoding", None) or "utf-8")
return _json.load(fp, **kwargs)
def htmlsafe_dumps(obj, **kwargs):
"""Works exactly like :func:`dumps` but is safe for use in ``<script>``
tags. It accepts the same arguments and returns a JSON string. Note that
this is available in templates through the ``|tojson`` filter which will
also mark the result as safe. Due to how this function escapes certain
characters this is safe even if used outside of ``<script>`` tags.
The following characters are escaped in strings:
- ``<``
- ``>``
- ``&``
- ``'``
This makes it safe to embed such strings in any place in HTML with the
notable exception of double quoted attributes. In that case single
quote your attributes or HTML escape it in addition.
.. versionchanged:: 0.10
This function's return value is now always safe for HTML usage, even
if outside of script tags or if used in XHTML. This rule does not
hold true when using this function in HTML attributes that are double
quoted. Always single quote attributes if you use the ``|tojson``
filter. Alternatively use ``|tojson|forceescape``.
"""
rv = (
dumps(obj, **kwargs)
.replace(u"<", u"\\u003c")
.replace(u">", u"\\u003e")
.replace(u"&", u"\\u0026")
.replace(u"'", u"\\u0027")
)
if not _slash_escape:
rv = rv.replace("\\/", "/")
return rv
def htmlsafe_dump(obj, fp, **kwargs):
"""Like :func:`htmlsafe_dumps` but writes into a file object."""
fp.write(text_type(htmlsafe_dumps(obj, **kwargs)))
def jsonify(*args, **kwargs):
"""This function wraps :func:`dumps` to add a few enhancements that make
life easier. It turns the JSON output into a :class:`~flask.Response`
object with the :mimetype:`application/json` mimetype. For convenience, it
also converts multiple arguments into an array or multiple keyword arguments
into a dict. This means that both ``jsonify(1,2,3)`` and
``jsonify([1,2,3])`` serialize to ``[1,2,3]``.
For clarity, the JSON serialization behavior has the following differences
from :func:`dumps`:
1. Single argument: Passed straight through to :func:`dumps`.
2. Multiple arguments: Converted to an array before being passed to
:func:`dumps`.
3. Multiple keyword arguments: Converted to a dict before being passed to
:func:`dumps`.
4. Both args and kwargs: Behavior undefined and will throw an exception.
Example usage::
from flask import jsonify
@app.route('/_get_current_user')
def get_current_user():
return jsonify(username=g.user.username,
email=g.user.email,
id=g.user.id)
This will send a JSON response like this to the browser::
{
"username": "admin",
"email": "admin@localhost",
"id": 42
}
.. versionchanged:: 0.11
Added support for serializing top-level arrays. This introduces a
security risk in ancient browsers. See :ref:`json-security` for details.
This function's response will be pretty printed if the
``JSONIFY_PRETTYPRINT_REGULAR`` config parameter is set to True or the
Flask app is running in debug mode. Compressed (not pretty) formatting
currently means no indents and no spaces after separators.
.. versionadded:: 0.2
"""
indent = None
separators = (",", ":")
if current_app.config["JSONIFY_PRETTYPRINT_REGULAR"] or current_app.debug:
indent = 2
separators = (", ", ": ")
if args and kwargs:
raise TypeError("jsonify() behavior undefined when passed both args and kwargs")
elif len(args) == 1: # single args are passed directly to dumps()
data = args[0]
else:
data = args or kwargs
return current_app.response_class(
dumps(data, indent=indent, separators=separators) + "\n",
mimetype=current_app.config["JSONIFY_MIMETYPE"],
)
def tojson_filter(obj, **kwargs):
return Markup(htmlsafe_dumps(obj, **kwargs))
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/flask
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/flask/json/tag.py
|
# -*- coding: utf-8 -*-
"""
Tagged JSON
~~~~~~~~~~~
A compact representation for lossless serialization of non-standard JSON types.
:class:`~flask.sessions.SecureCookieSessionInterface` uses this to serialize
the session data, but it may be useful in other places. It can be extended to
support other types.
.. autoclass:: TaggedJSONSerializer
:members:
.. autoclass:: JSONTag
:members:
Let's seen an example that adds support for :class:`~collections.OrderedDict`.
Dicts don't have an order in Python or JSON, so to handle this we will dump
the items as a list of ``[key, value]`` pairs. Subclass :class:`JSONTag` and
give it the new key ``' od'`` to identify the type. The session serializer
processes dicts first, so insert the new tag at the front of the order since
``OrderedDict`` must be processed before ``dict``. ::
from flask.json.tag import JSONTag
class TagOrderedDict(JSONTag):
__slots__ = ('serializer',)
key = ' od'
def check(self, value):
return isinstance(value, OrderedDict)
def to_json(self, value):
return [[k, self.serializer.tag(v)] for k, v in iteritems(value)]
def to_python(self, value):
return OrderedDict(value)
app.session_interface.serializer.register(TagOrderedDict, index=0)
:copyright: 2010 Pallets
:license: BSD-3-Clause
"""
from base64 import b64decode
from base64 import b64encode
from datetime import datetime
from uuid import UUID
from jinja2 import Markup
from werkzeug.http import http_date
from werkzeug.http import parse_date
from .._compat import iteritems
from .._compat import text_type
from ..json import dumps
from ..json import loads
class JSONTag(object):
"""Base class for defining type tags for :class:`TaggedJSONSerializer`."""
__slots__ = ("serializer",)
#: The tag to mark the serialized object with. If ``None``, this tag is
#: only used as an intermediate step during tagging.
key = None
def __init__(self, serializer):
"""Create a tagger for the given serializer."""
self.serializer = serializer
def check(self, value):
"""Check if the given value should be tagged by this tag."""
raise NotImplementedError
def to_json(self, value):
"""Convert the Python object to an object that is a valid JSON type.
The tag will be added later."""
raise NotImplementedError
def to_python(self, value):
"""Convert the JSON representation back to the correct type. The tag
will already be removed."""
raise NotImplementedError
def tag(self, value):
"""Convert the value to a valid JSON type and add the tag structure
around it."""
return {self.key: self.to_json(value)}
class TagDict(JSONTag):
"""Tag for 1-item dicts whose only key matches a registered tag.
Internally, the dict key is suffixed with `__`, and the suffix is removed
when deserializing.
"""
__slots__ = ()
key = " di"
def check(self, value):
return (
isinstance(value, dict)
and len(value) == 1
and next(iter(value)) in self.serializer.tags
)
def to_json(self, value):
key = next(iter(value))
return {key + "__": self.serializer.tag(value[key])}
def to_python(self, value):
key = next(iter(value))
return {key[:-2]: value[key]}
class PassDict(JSONTag):
__slots__ = ()
def check(self, value):
return isinstance(value, dict)
def to_json(self, value):
# JSON objects may only have string keys, so don't bother tagging the
# key here.
return dict((k, self.serializer.tag(v)) for k, v in iteritems(value))
tag = to_json
class TagTuple(JSONTag):
__slots__ = ()
key = " t"
def check(self, value):
return isinstance(value, tuple)
def to_json(self, value):
return [self.serializer.tag(item) for item in value]
def to_python(self, value):
return tuple(value)
class PassList(JSONTag):
__slots__ = ()
def check(self, value):
return isinstance(value, list)
def to_json(self, value):
return [self.serializer.tag(item) for item in value]
tag = to_json
class TagBytes(JSONTag):
__slots__ = ()
key = " b"
def check(self, value):
return isinstance(value, bytes)
def to_json(self, value):
return b64encode(value).decode("ascii")
def to_python(self, value):
return b64decode(value)
class TagMarkup(JSONTag):
"""Serialize anything matching the :class:`~flask.Markup` API by
having a ``__html__`` method to the result of that method. Always
deserializes to an instance of :class:`~flask.Markup`."""
__slots__ = ()
key = " m"
def check(self, value):
return callable(getattr(value, "__html__", None))
def to_json(self, value):
return text_type(value.__html__())
def to_python(self, value):
return Markup(value)
class TagUUID(JSONTag):
__slots__ = ()
key = " u"
def check(self, value):
return isinstance(value, UUID)
def to_json(self, value):
return value.hex
def to_python(self, value):
return UUID(value)
class TagDateTime(JSONTag):
__slots__ = ()
key = " d"
def check(self, value):
return isinstance(value, datetime)
def to_json(self, value):
return http_date(value)
def to_python(self, value):
return parse_date(value)
class TaggedJSONSerializer(object):
"""Serializer that uses a tag system to compactly represent objects that
are not JSON types. Passed as the intermediate serializer to
:class:`itsdangerous.Serializer`.
The following extra types are supported:
* :class:`dict`
* :class:`tuple`
* :class:`bytes`
* :class:`~flask.Markup`
* :class:`~uuid.UUID`
* :class:`~datetime.datetime`
"""
__slots__ = ("tags", "order")
#: Tag classes to bind when creating the serializer. Other tags can be
#: added later using :meth:`~register`.
default_tags = [
TagDict,
PassDict,
TagTuple,
PassList,
TagBytes,
TagMarkup,
TagUUID,
TagDateTime,
]
def __init__(self):
self.tags = {}
self.order = []
for cls in self.default_tags:
self.register(cls)
def register(self, tag_class, force=False, index=None):
"""Register a new tag with this serializer.
:param tag_class: tag class to register. Will be instantiated with this
serializer instance.
:param force: overwrite an existing tag. If false (default), a
:exc:`KeyError` is raised.
:param index: index to insert the new tag in the tag order. Useful when
the new tag is a special case of an existing tag. If ``None``
(default), the tag is appended to the end of the order.
:raise KeyError: if the tag key is already registered and ``force`` is
not true.
"""
tag = tag_class(self)
key = tag.key
if key is not None:
if not force and key in self.tags:
raise KeyError("Tag '{0}' is already registered.".format(key))
self.tags[key] = tag
if index is None:
self.order.append(tag)
else:
self.order.insert(index, tag)
def tag(self, value):
"""Convert a value to a tagged representation if necessary."""
for tag in self.order:
if tag.check(value):
return tag.tag(value)
return value
def untag(self, value):
"""Convert a tagged representation back to the original type."""
if len(value) != 1:
return value
key = next(iter(value))
if key not in self.tags:
return value
return self.tags[key].to_python(value[key])
def dumps(self, value):
"""Tag the value and dump it to a compact JSON string."""
return dumps(self.tag(value), separators=(",", ":"))
def loads(self, value):
"""Load data from a JSON string and deserialized any tagged objects."""
return loads(value, object_hook=self.untag)
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/Flask_RESTful-0.3.8.dist-info/AUTHORS.md
|
Authors
=======
A huge thanks to all of our contributors:
- Adam Chainz
- Alec Nikolas Reiter
- Alex Gaynor
- Alex M
- Alex Morken
- Andrew Dunham
- Andriy Yurchuk
- Anil Kulkarni
- Antonio Dourado
- Antonio Herraiz
- Ares Ou
- Artur Rodrigues
- Axel Haustant
- Belousow Makc
- Benjamin Dopplinger
- Bennett, Bryan
- Bohan Zhang
- Bryan Bennett
- Bulat Bochkariov
- Cameron Brandon White
- Catherine Devlin
- Dan Quirk
- Daniele Esposti
- Dario Bertini
- David Arnold
- David Baumgold
- David Boucha
- David Crawford
- Dimitris Theodorou
- Doug Black
- Evan Dale Aromin
- Eyal Levin
- Francesco Della Vedova
- Frank Stratton
- Garret Raziel
- Gary Belvin
- Gilles Dartiguelongue
- Giorgio Salluzzo
- Guillaume BINET
- Heston Liebowitz
- Hu WQ
- Jacob Magnusson
- James Booth
- James Ogura
- James Turk
- Jeff Widman
- Joakim Ekberg
- Johannes
- Jordan Yelloz
- Josh Friend
- Joshua C. Randall
- Joshua Randall
- José Fernández Ramos
- Juan Rossi
- JuneHyeon Bae
- Kamil Gałuszka
- Kevin Burke
- Kevin Deldycke
- Kevin Funk
- Kyle Conroy
- Lance Ingle
- Lars Holm Nielsen
- Luiz Armesto
- Malthe Borch
- Marek Hlobil
- Matt Wright
- Max Mautner
- Max Peterson
- Maxim
- Michael Hwang
- Michael Newman
- Miguel Grinberg
- Mihai Tomescu
- Neil Halelamien
- Nicolas Harraudeau
- Pavel Tyslyatsky
- Petrus J.v.Rensburg
- Philippe Ndiaye
- Piotr Husiatyński
- Prasanna Swaminathan
- Robert Warner
- Rod Cloutier
- Ryan Horn
- Rémi Alvergnat
- Sam Kimbrel
- Samarth Shah
- Sami Jaktholm
- Sander Sink
- Sasha Baranov
- Saul Diez-Guerra
- Sergey Romanov
- Shreyans Sheth
- Steven Leggett
- Sven-Hendrik Haase
- Usman Ehtesham Gul
- Victor Neo
- Vlad Frolov
- Vladimir Pal
- WooParadog
- Yaniv Aknin
- akash
- bret barker
- hachichaud
- jbouzekri
- jobou
- johnrichter
- justanr
- k-funk
- kelvinhammond
- kenjones
- kieran gorman
- kumy
- lyschoening
- mailto1587
- mniebla
- mozillazg
- muchosalsa
- nachinius
- nixdata
- papaeye
- pingz
- saml
- siavashg
- silasray
- soasme
- ueg1990
- y-p
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/Flask_RESTful-0.3.8.dist-info/RECORD
|
Flask_RESTful-0.3.8.dist-info/AUTHORS.md,sha256=HBq00z_VgMI2xfwfUobrU16_qamdouMkpNxbR0BzaVg,1992
Flask_RESTful-0.3.8.dist-info/INSTALLER,sha256=zuuue4knoyJ-UwPPXg8fezS7VCrXJQrAP7zeNuwvFQg,4
Flask_RESTful-0.3.8.dist-info/LICENSE,sha256=PFjoO0Jk5okmshAgMix5-RZTC0sFT_EJWpC_CtQcCyM,1485
Flask_RESTful-0.3.8.dist-info/METADATA,sha256=hp4EXt4Kh-o05wVECP3wvPJKa3qqPtoiIoLEv8-SNH0,912
Flask_RESTful-0.3.8.dist-info/RECORD,,
Flask_RESTful-0.3.8.dist-info/REQUESTED,sha256=47DEQpj8HBSa-_TImW-5JCeuQeRkm5NMpJWZG3hSuFU,0
Flask_RESTful-0.3.8.dist-info/WHEEL,sha256=kGT74LWyRUZrL4VgLh6_g12IeVl_9u9ZVhadrgXZUEY,110
Flask_RESTful-0.3.8.dist-info/top_level.txt,sha256=lNpWPlejgBAtMhCUwz_FTyJH12ul1mBZ-Uv3ZK1HiGg,14
flask_restful/__init__.py,sha256=ERPAFR7HbXsdknE2yJExG3Gc8yra6cf4zAxn9RjHYvQ,27927
flask_restful/__pycache__/__init__.cpython-39.pyc,,
flask_restful/__pycache__/__version__.cpython-39.pyc,,
flask_restful/__pycache__/fields.cpython-39.pyc,,
flask_restful/__pycache__/inputs.cpython-39.pyc,,
flask_restful/__pycache__/reqparse.cpython-39.pyc,,
flask_restful/__version__.py,sha256=aTASU7IGBRnbpLDy45lCOZNDHVi9hbsnVtlGJSM49x0,45
flask_restful/fields.py,sha256=_aO-5n5vn_tLYkxw8rQhAqzPXQRvfumvz_M9HJUL99c,13069
flask_restful/inputs.py,sha256=AOBF_1BpB8snY3XJT_vca_uWYzkCP2nla01lFU7xqLE,9114
flask_restful/representations/__init__.py,sha256=AbpHGcgLb-kRsJGnwFEktk7uzpZOCcBY74-YBdrKVGs,1
flask_restful/representations/__pycache__/__init__.cpython-39.pyc,,
flask_restful/representations/__pycache__/json.cpython-39.pyc,,
flask_restful/representations/json.py,sha256=swKwnbt7v2ioHfHkqhqbzIu_yrcP0ComlSl49IGFJOo,873
flask_restful/reqparse.py,sha256=-xZmkyrvDFfGvFFokTtXe4J-2PWnNX4EfKolhkT995E,14681
flask_restful/utils/__init__.py,sha256=jgedvOLGeTk4Sqox4WHE_vAFLP0T_PrLHO4PXaqFqxw,723
flask_restful/utils/__pycache__/__init__.cpython-39.pyc,,
flask_restful/utils/__pycache__/cors.cpython-39.pyc,,
flask_restful/utils/__pycache__/crypto.cpython-39.pyc,,
flask_restful/utils/cors.py,sha256=cZiqaHhIn0w66spRoSIdC-jIn4X_b6OlVms5eGF4Ess,2084
flask_restful/utils/crypto.py,sha256=q3PBvAYMJYybbqqQlKNF_Pqeyo9h3x5jFJuVqtEA5bA,996
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/Flask_RESTful-0.3.8.dist-info/LICENSE
|
Copyright (c) 2013, Twilio, Inc.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
- Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
- Neither the name of the Twilio, Inc. nor the names of its contributors may be
used to endorse or promote products derived from this software without
specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/Flask_RESTful-0.3.8.dist-info/WHEEL
|
Wheel-Version: 1.0
Generator: bdist_wheel (0.34.2)
Root-Is-Purelib: true
Tag: py2-none-any
Tag: py3-none-any
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/Flask_RESTful-0.3.8.dist-info/top_level.txt
|
flask_restful
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/Flask_RESTful-0.3.8.dist-info/INSTALLER
|
pip
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/Flask_RESTful-0.3.8.dist-info/METADATA
|
Metadata-Version: 2.1
Name: Flask-RESTful
Version: 0.3.8
Summary: Simple framework for creating REST APIs
Home-page: https://www.github.com/flask-restful/flask-restful/
Author: Twilio API Team
Author-email: help@twilio.com
License: BSD
Platform: any
Classifier: Framework :: Flask
Classifier: Programming Language :: Python :: 2
Classifier: Programming Language :: Python :: 2.7
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.4
Classifier: Programming Language :: Python :: 3.5
Classifier: Programming Language :: Python :: 3.6
Classifier: Programming Language :: Python :: 3.7
Classifier: Programming Language :: Python :: 3.8
Classifier: License :: OSI Approved :: BSD License
Requires-Dist: aniso8601 (>=0.82)
Requires-Dist: Flask (>=0.8)
Requires-Dist: six (>=1.3.0)
Requires-Dist: pytz
Provides-Extra: docs
Requires-Dist: sphinx ; extra == 'docs'
UNKNOWN
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
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qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/toml/decoder.py
|
import datetime
import io
from os import linesep
import re
import sys
from toml.tz import TomlTz
if sys.version_info < (3,):
_range = xrange # noqa: F821
else:
unicode = str
_range = range
basestring = str
unichr = chr
def _detect_pathlib_path(p):
if (3, 4) <= sys.version_info:
import pathlib
if isinstance(p, pathlib.PurePath):
return True
return False
def _ispath(p):
if isinstance(p, (bytes, basestring)):
return True
return _detect_pathlib_path(p)
def _getpath(p):
if (3, 6) <= sys.version_info:
import os
return os.fspath(p)
if _detect_pathlib_path(p):
return str(p)
return p
try:
FNFError = FileNotFoundError
except NameError:
FNFError = IOError
TIME_RE = re.compile(r"([0-9]{2}):([0-9]{2}):([0-9]{2})(\.([0-9]{3,6}))?")
class TomlDecodeError(ValueError):
"""Base toml Exception / Error."""
def __init__(self, msg, doc, pos):
lineno = doc.count('\n', 0, pos) + 1
colno = pos - doc.rfind('\n', 0, pos)
emsg = '{} (line {} column {} char {})'.format(msg, lineno, colno, pos)
ValueError.__init__(self, emsg)
self.msg = msg
self.doc = doc
self.pos = pos
self.lineno = lineno
self.colno = colno
# Matches a TOML number, which allows underscores for readability
_number_with_underscores = re.compile('([0-9])(_([0-9]))*')
class CommentValue(object):
def __init__(self, val, comment, beginline, _dict):
self.val = val
separator = "\n" if beginline else " "
self.comment = separator + comment
self._dict = _dict
def __getitem__(self, key):
return self.val[key]
def __setitem__(self, key, value):
self.val[key] = value
def dump(self, dump_value_func):
retstr = dump_value_func(self.val)
if isinstance(self.val, self._dict):
return self.comment + "\n" + unicode(retstr)
else:
return unicode(retstr) + self.comment
def _strictly_valid_num(n):
n = n.strip()
if not n:
return False
if n[0] == '_':
return False
if n[-1] == '_':
return False
if "_." in n or "._" in n:
return False
if len(n) == 1:
return True
if n[0] == '0' and n[1] not in ['.', 'o', 'b', 'x']:
return False
if n[0] == '+' or n[0] == '-':
n = n[1:]
if len(n) > 1 and n[0] == '0' and n[1] != '.':
return False
if '__' in n:
return False
return True
def load(f, _dict=dict, decoder=None):
"""Parses named file or files as toml and returns a dictionary
Args:
f: Path to the file to open, array of files to read into single dict
or a file descriptor
_dict: (optional) Specifies the class of the returned toml dictionary
decoder: The decoder to use
Returns:
Parsed toml file represented as a dictionary
Raises:
TypeError -- When f is invalid type
TomlDecodeError: Error while decoding toml
IOError / FileNotFoundError -- When an array with no valid (existing)
(Python 2 / Python 3) file paths is passed
"""
if _ispath(f):
with io.open(_getpath(f), encoding='utf-8') as ffile:
return loads(ffile.read(), _dict, decoder)
elif isinstance(f, list):
from os import path as op
from warnings import warn
if not [path for path in f if op.exists(path)]:
error_msg = "Load expects a list to contain filenames only."
error_msg += linesep
error_msg += ("The list needs to contain the path of at least one "
"existing file.")
raise FNFError(error_msg)
if decoder is None:
decoder = TomlDecoder(_dict)
d = decoder.get_empty_table()
for l in f: # noqa: E741
if op.exists(l):
d.update(load(l, _dict, decoder))
else:
warn("Non-existent filename in list with at least one valid "
"filename")
return d
else:
try:
return loads(f.read(), _dict, decoder)
except AttributeError:
raise TypeError("You can only load a file descriptor, filename or "
"list")
_groupname_re = re.compile(r'^[A-Za-z0-9_-]+$')
def loads(s, _dict=dict, decoder=None):
"""Parses string as toml
Args:
s: String to be parsed
_dict: (optional) Specifies the class of the returned toml dictionary
Returns:
Parsed toml file represented as a dictionary
Raises:
TypeError: When a non-string is passed
TomlDecodeError: Error while decoding toml
"""
implicitgroups = []
if decoder is None:
decoder = TomlDecoder(_dict)
retval = decoder.get_empty_table()
currentlevel = retval
if not isinstance(s, basestring):
raise TypeError("Expecting something like a string")
if not isinstance(s, unicode):
s = s.decode('utf8')
original = s
sl = list(s)
openarr = 0
openstring = False
openstrchar = ""
multilinestr = False
arrayoftables = False
beginline = True
keygroup = False
dottedkey = False
keyname = 0
key = ''
prev_key = ''
line_no = 1
for i, item in enumerate(sl):
if item == '\r' and sl[i + 1] == '\n':
sl[i] = ' '
continue
if keyname:
key += item
if item == '\n':
raise TomlDecodeError("Key name found without value."
" Reached end of line.", original, i)
if openstring:
if item == openstrchar:
oddbackslash = False
k = 1
while i >= k and sl[i - k] == '\\':
oddbackslash = not oddbackslash
k += 1
if not oddbackslash:
keyname = 2
openstring = False
openstrchar = ""
continue
elif keyname == 1:
if item.isspace():
keyname = 2
continue
elif item == '.':
dottedkey = True
continue
elif item.isalnum() or item == '_' or item == '-':
continue
elif (dottedkey and sl[i - 1] == '.' and
(item == '"' or item == "'")):
openstring = True
openstrchar = item
continue
elif keyname == 2:
if item.isspace():
if dottedkey:
nextitem = sl[i + 1]
if not nextitem.isspace() and nextitem != '.':
keyname = 1
continue
if item == '.':
dottedkey = True
nextitem = sl[i + 1]
if not nextitem.isspace() and nextitem != '.':
keyname = 1
continue
if item == '=':
keyname = 0
prev_key = key[:-1].rstrip()
key = ''
dottedkey = False
else:
raise TomlDecodeError("Found invalid character in key name: '" +
item + "'. Try quoting the key name.",
original, i)
if item == "'" and openstrchar != '"':
k = 1
try:
while sl[i - k] == "'":
k += 1
if k == 3:
break
except IndexError:
pass
if k == 3:
multilinestr = not multilinestr
openstring = multilinestr
else:
openstring = not openstring
if openstring:
openstrchar = "'"
else:
openstrchar = ""
if item == '"' and openstrchar != "'":
oddbackslash = False
k = 1
tripquote = False
try:
while sl[i - k] == '"':
k += 1
if k == 3:
tripquote = True
break
if k == 1 or (k == 3 and tripquote):
while sl[i - k] == '\\':
oddbackslash = not oddbackslash
k += 1
except IndexError:
pass
if not oddbackslash:
if tripquote:
multilinestr = not multilinestr
openstring = multilinestr
else:
openstring = not openstring
if openstring:
openstrchar = '"'
else:
openstrchar = ""
if item == '#' and (not openstring and not keygroup and
not arrayoftables):
j = i
comment = ""
try:
while sl[j] != '\n':
comment += s[j]
sl[j] = ' '
j += 1
except IndexError:
break
if not openarr:
decoder.preserve_comment(line_no, prev_key, comment, beginline)
if item == '[' and (not openstring and not keygroup and
not arrayoftables):
if beginline:
if len(sl) > i + 1 and sl[i + 1] == '[':
arrayoftables = True
else:
keygroup = True
else:
openarr += 1
if item == ']' and not openstring:
if keygroup:
keygroup = False
elif arrayoftables:
if sl[i - 1] == ']':
arrayoftables = False
else:
openarr -= 1
if item == '\n':
if openstring or multilinestr:
if not multilinestr:
raise TomlDecodeError("Unbalanced quotes", original, i)
if ((sl[i - 1] == "'" or sl[i - 1] == '"') and (
sl[i - 2] == sl[i - 1])):
sl[i] = sl[i - 1]
if sl[i - 3] == sl[i - 1]:
sl[i - 3] = ' '
elif openarr:
sl[i] = ' '
else:
beginline = True
line_no += 1
elif beginline and sl[i] != ' ' and sl[i] != '\t':
beginline = False
if not keygroup and not arrayoftables:
if sl[i] == '=':
raise TomlDecodeError("Found empty keyname. ", original, i)
keyname = 1
key += item
if keyname:
raise TomlDecodeError("Key name found without value."
" Reached end of file.", original, len(s))
if openstring: # reached EOF and have an unterminated string
raise TomlDecodeError("Unterminated string found."
" Reached end of file.", original, len(s))
s = ''.join(sl)
s = s.split('\n')
multikey = None
multilinestr = ""
multibackslash = False
pos = 0
for idx, line in enumerate(s):
if idx > 0:
pos += len(s[idx - 1]) + 1
decoder.embed_comments(idx, currentlevel)
if not multilinestr or multibackslash or '\n' not in multilinestr:
line = line.strip()
if line == "" and (not multikey or multibackslash):
continue
if multikey:
if multibackslash:
multilinestr += line
else:
multilinestr += line
multibackslash = False
closed = False
if multilinestr[0] == '[':
closed = line[-1] == ']'
elif len(line) > 2:
closed = (line[-1] == multilinestr[0] and
line[-2] == multilinestr[0] and
line[-3] == multilinestr[0])
if closed:
try:
value, vtype = decoder.load_value(multilinestr)
except ValueError as err:
raise TomlDecodeError(str(err), original, pos)
currentlevel[multikey] = value
multikey = None
multilinestr = ""
else:
k = len(multilinestr) - 1
while k > -1 and multilinestr[k] == '\\':
multibackslash = not multibackslash
k -= 1
if multibackslash:
multilinestr = multilinestr[:-1]
else:
multilinestr += "\n"
continue
if line[0] == '[':
arrayoftables = False
if len(line) == 1:
raise TomlDecodeError("Opening key group bracket on line by "
"itself.", original, pos)
if line[1] == '[':
arrayoftables = True
line = line[2:]
splitstr = ']]'
else:
line = line[1:]
splitstr = ']'
i = 1
quotesplits = decoder._get_split_on_quotes(line)
quoted = False
for quotesplit in quotesplits:
if not quoted and splitstr in quotesplit:
break
i += quotesplit.count(splitstr)
quoted = not quoted
line = line.split(splitstr, i)
if len(line) < i + 1 or line[-1].strip() != "":
raise TomlDecodeError("Key group not on a line by itself.",
original, pos)
groups = splitstr.join(line[:-1]).split('.')
i = 0
while i < len(groups):
groups[i] = groups[i].strip()
if len(groups[i]) > 0 and (groups[i][0] == '"' or
groups[i][0] == "'"):
groupstr = groups[i]
j = i + 1
while ((not groupstr[0] == groupstr[-1]) or
len(groupstr) == 1):
j += 1
if j > len(groups) + 2:
raise TomlDecodeError("Invalid group name '" +
groupstr + "' Something " +
"went wrong.", original, pos)
groupstr = '.'.join(groups[i:j]).strip()
groups[i] = groupstr[1:-1]
groups[i + 1:j] = []
else:
if not _groupname_re.match(groups[i]):
raise TomlDecodeError("Invalid group name '" +
groups[i] + "'. Try quoting it.",
original, pos)
i += 1
currentlevel = retval
for i in _range(len(groups)):
group = groups[i]
if group == "":
raise TomlDecodeError("Can't have a keygroup with an empty "
"name", original, pos)
try:
currentlevel[group]
if i == len(groups) - 1:
if group in implicitgroups:
implicitgroups.remove(group)
if arrayoftables:
raise TomlDecodeError("An implicitly defined "
"table can't be an array",
original, pos)
elif arrayoftables:
currentlevel[group].append(decoder.get_empty_table()
)
else:
raise TomlDecodeError("What? " + group +
" already exists?" +
str(currentlevel),
original, pos)
except TypeError:
currentlevel = currentlevel[-1]
if group not in currentlevel:
currentlevel[group] = decoder.get_empty_table()
if i == len(groups) - 1 and arrayoftables:
currentlevel[group] = [decoder.get_empty_table()]
except KeyError:
if i != len(groups) - 1:
implicitgroups.append(group)
currentlevel[group] = decoder.get_empty_table()
if i == len(groups) - 1 and arrayoftables:
currentlevel[group] = [decoder.get_empty_table()]
currentlevel = currentlevel[group]
if arrayoftables:
try:
currentlevel = currentlevel[-1]
except KeyError:
pass
elif line[0] == "{":
if line[-1] != "}":
raise TomlDecodeError("Line breaks are not allowed in inline"
"objects", original, pos)
try:
decoder.load_inline_object(line, currentlevel, multikey,
multibackslash)
except ValueError as err:
raise TomlDecodeError(str(err), original, pos)
elif "=" in line:
try:
ret = decoder.load_line(line, currentlevel, multikey,
multibackslash)
except ValueError as err:
raise TomlDecodeError(str(err), original, pos)
if ret is not None:
multikey, multilinestr, multibackslash = ret
return retval
def _load_date(val):
microsecond = 0
tz = None
try:
if len(val) > 19:
if val[19] == '.':
if val[-1].upper() == 'Z':
subsecondval = val[20:-1]
tzval = "Z"
else:
subsecondvalandtz = val[20:]
if '+' in subsecondvalandtz:
splitpoint = subsecondvalandtz.index('+')
subsecondval = subsecondvalandtz[:splitpoint]
tzval = subsecondvalandtz[splitpoint:]
elif '-' in subsecondvalandtz:
splitpoint = subsecondvalandtz.index('-')
subsecondval = subsecondvalandtz[:splitpoint]
tzval = subsecondvalandtz[splitpoint:]
else:
tzval = None
subsecondval = subsecondvalandtz
if tzval is not None:
tz = TomlTz(tzval)
microsecond = int(int(subsecondval) *
(10 ** (6 - len(subsecondval))))
else:
tz = TomlTz(val[19:])
except ValueError:
tz = None
if "-" not in val[1:]:
return None
try:
if len(val) == 10:
d = datetime.date(
int(val[:4]), int(val[5:7]),
int(val[8:10]))
else:
d = datetime.datetime(
int(val[:4]), int(val[5:7]),
int(val[8:10]), int(val[11:13]),
int(val[14:16]), int(val[17:19]), microsecond, tz)
except ValueError:
return None
return d
def _load_unicode_escapes(v, hexbytes, prefix):
skip = False
i = len(v) - 1
while i > -1 and v[i] == '\\':
skip = not skip
i -= 1
for hx in hexbytes:
if skip:
skip = False
i = len(hx) - 1
while i > -1 and hx[i] == '\\':
skip = not skip
i -= 1
v += prefix
v += hx
continue
hxb = ""
i = 0
hxblen = 4
if prefix == "\\U":
hxblen = 8
hxb = ''.join(hx[i:i + hxblen]).lower()
if hxb.strip('0123456789abcdef'):
raise ValueError("Invalid escape sequence: " + hxb)
if hxb[0] == "d" and hxb[1].strip('01234567'):
raise ValueError("Invalid escape sequence: " + hxb +
". Only scalar unicode points are allowed.")
v += unichr(int(hxb, 16))
v += unicode(hx[len(hxb):])
return v
# Unescape TOML string values.
# content after the \
_escapes = ['0', 'b', 'f', 'n', 'r', 't', '"']
# What it should be replaced by
_escapedchars = ['\0', '\b', '\f', '\n', '\r', '\t', '\"']
# Used for substitution
_escape_to_escapedchars = dict(zip(_escapes, _escapedchars))
def _unescape(v):
"""Unescape characters in a TOML string."""
i = 0
backslash = False
while i < len(v):
if backslash:
backslash = False
if v[i] in _escapes:
v = v[:i - 1] + _escape_to_escapedchars[v[i]] + v[i + 1:]
elif v[i] == '\\':
v = v[:i - 1] + v[i:]
elif v[i] == 'u' or v[i] == 'U':
i += 1
else:
raise ValueError("Reserved escape sequence used")
continue
elif v[i] == '\\':
backslash = True
i += 1
return v
class InlineTableDict(object):
"""Sentinel subclass of dict for inline tables."""
class TomlDecoder(object):
def __init__(self, _dict=dict):
self._dict = _dict
def get_empty_table(self):
return self._dict()
def get_empty_inline_table(self):
class DynamicInlineTableDict(self._dict, InlineTableDict):
"""Concrete sentinel subclass for inline tables.
It is a subclass of _dict which is passed in dynamically at load
time
It is also a subclass of InlineTableDict
"""
return DynamicInlineTableDict()
def load_inline_object(self, line, currentlevel, multikey=False,
multibackslash=False):
candidate_groups = line[1:-1].split(",")
groups = []
if len(candidate_groups) == 1 and not candidate_groups[0].strip():
candidate_groups.pop()
while len(candidate_groups) > 0:
candidate_group = candidate_groups.pop(0)
try:
_, value = candidate_group.split('=', 1)
except ValueError:
raise ValueError("Invalid inline table encountered")
value = value.strip()
if ((value[0] == value[-1] and value[0] in ('"', "'")) or (
value[0] in '-0123456789' or
value in ('true', 'false') or
(value[0] == "[" and value[-1] == "]") or
(value[0] == '{' and value[-1] == '}'))):
groups.append(candidate_group)
elif len(candidate_groups) > 0:
candidate_groups[0] = (candidate_group + "," +
candidate_groups[0])
else:
raise ValueError("Invalid inline table value encountered")
for group in groups:
status = self.load_line(group, currentlevel, multikey,
multibackslash)
if status is not None:
break
def _get_split_on_quotes(self, line):
doublequotesplits = line.split('"')
quoted = False
quotesplits = []
if len(doublequotesplits) > 1 and "'" in doublequotesplits[0]:
singlequotesplits = doublequotesplits[0].split("'")
doublequotesplits = doublequotesplits[1:]
while len(singlequotesplits) % 2 == 0 and len(doublequotesplits):
singlequotesplits[-1] += '"' + doublequotesplits[0]
doublequotesplits = doublequotesplits[1:]
if "'" in singlequotesplits[-1]:
singlequotesplits = (singlequotesplits[:-1] +
singlequotesplits[-1].split("'"))
quotesplits += singlequotesplits
for doublequotesplit in doublequotesplits:
if quoted:
quotesplits.append(doublequotesplit)
else:
quotesplits += doublequotesplit.split("'")
quoted = not quoted
return quotesplits
def load_line(self, line, currentlevel, multikey, multibackslash):
i = 1
quotesplits = self._get_split_on_quotes(line)
quoted = False
for quotesplit in quotesplits:
if not quoted and '=' in quotesplit:
break
i += quotesplit.count('=')
quoted = not quoted
pair = line.split('=', i)
strictly_valid = _strictly_valid_num(pair[-1])
if _number_with_underscores.match(pair[-1]):
pair[-1] = pair[-1].replace('_', '')
while len(pair[-1]) and (pair[-1][0] != ' ' and pair[-1][0] != '\t' and
pair[-1][0] != "'" and pair[-1][0] != '"' and
pair[-1][0] != '[' and pair[-1][0] != '{' and
pair[-1].strip() != 'true' and
pair[-1].strip() != 'false'):
try:
float(pair[-1])
break
except ValueError:
pass
if _load_date(pair[-1]) is not None:
break
if TIME_RE.match(pair[-1]):
break
i += 1
prev_val = pair[-1]
pair = line.split('=', i)
if prev_val == pair[-1]:
raise ValueError("Invalid date or number")
if strictly_valid:
strictly_valid = _strictly_valid_num(pair[-1])
pair = ['='.join(pair[:-1]).strip(), pair[-1].strip()]
if '.' in pair[0]:
if '"' in pair[0] or "'" in pair[0]:
quotesplits = self._get_split_on_quotes(pair[0])
quoted = False
levels = []
for quotesplit in quotesplits:
if quoted:
levels.append(quotesplit)
else:
levels += [level.strip() for level in
quotesplit.split('.')]
quoted = not quoted
else:
levels = pair[0].split('.')
while levels[-1] == "":
levels = levels[:-1]
for level in levels[:-1]:
if level == "":
continue
if level not in currentlevel:
currentlevel[level] = self.get_empty_table()
currentlevel = currentlevel[level]
pair[0] = levels[-1].strip()
elif (pair[0][0] == '"' or pair[0][0] == "'") and \
(pair[0][-1] == pair[0][0]):
pair[0] = _unescape(pair[0][1:-1])
k, koffset = self._load_line_multiline_str(pair[1])
if k > -1:
while k > -1 and pair[1][k + koffset] == '\\':
multibackslash = not multibackslash
k -= 1
if multibackslash:
multilinestr = pair[1][:-1]
else:
multilinestr = pair[1] + "\n"
multikey = pair[0]
else:
value, vtype = self.load_value(pair[1], strictly_valid)
try:
currentlevel[pair[0]]
raise ValueError("Duplicate keys!")
except TypeError:
raise ValueError("Duplicate keys!")
except KeyError:
if multikey:
return multikey, multilinestr, multibackslash
else:
currentlevel[pair[0]] = value
def _load_line_multiline_str(self, p):
poffset = 0
if len(p) < 3:
return -1, poffset
if p[0] == '[' and (p.strip()[-1] != ']' and
self._load_array_isstrarray(p)):
newp = p[1:].strip().split(',')
while len(newp) > 1 and newp[-1][0] != '"' and newp[-1][0] != "'":
newp = newp[:-2] + [newp[-2] + ',' + newp[-1]]
newp = newp[-1]
poffset = len(p) - len(newp)
p = newp
if p[0] != '"' and p[0] != "'":
return -1, poffset
if p[1] != p[0] or p[2] != p[0]:
return -1, poffset
if len(p) > 5 and p[-1] == p[0] and p[-2] == p[0] and p[-3] == p[0]:
return -1, poffset
return len(p) - 1, poffset
def load_value(self, v, strictly_valid=True):
if not v:
raise ValueError("Empty value is invalid")
if v == 'true':
return (True, "bool")
elif v.lower() == 'true':
raise ValueError("Only all lowercase booleans allowed")
elif v == 'false':
return (False, "bool")
elif v.lower() == 'false':
raise ValueError("Only all lowercase booleans allowed")
elif v[0] == '"' or v[0] == "'":
quotechar = v[0]
testv = v[1:].split(quotechar)
triplequote = False
triplequotecount = 0
if len(testv) > 1 and testv[0] == '' and testv[1] == '':
testv = testv[2:]
triplequote = True
closed = False
for tv in testv:
if tv == '':
if triplequote:
triplequotecount += 1
else:
closed = True
else:
oddbackslash = False
try:
i = -1
j = tv[i]
while j == '\\':
oddbackslash = not oddbackslash
i -= 1
j = tv[i]
except IndexError:
pass
if not oddbackslash:
if closed:
raise ValueError("Found tokens after a closed " +
"string. Invalid TOML.")
else:
if not triplequote or triplequotecount > 1:
closed = True
else:
triplequotecount = 0
if quotechar == '"':
escapeseqs = v.split('\\')[1:]
backslash = False
for i in escapeseqs:
if i == '':
backslash = not backslash
else:
if i[0] not in _escapes and (i[0] != 'u' and
i[0] != 'U' and
not backslash):
raise ValueError("Reserved escape sequence used")
if backslash:
backslash = False
for prefix in ["\\u", "\\U"]:
if prefix in v:
hexbytes = v.split(prefix)
v = _load_unicode_escapes(hexbytes[0], hexbytes[1:],
prefix)
v = _unescape(v)
if len(v) > 1 and v[1] == quotechar and (len(v) < 3 or
v[1] == v[2]):
v = v[2:-2]
return (v[1:-1], "str")
elif v[0] == '[':
return (self.load_array(v), "array")
elif v[0] == '{':
inline_object = self.get_empty_inline_table()
self.load_inline_object(v, inline_object)
return (inline_object, "inline_object")
elif TIME_RE.match(v):
h, m, s, _, ms = TIME_RE.match(v).groups()
time = datetime.time(int(h), int(m), int(s), int(ms) if ms else 0)
return (time, "time")
else:
parsed_date = _load_date(v)
if parsed_date is not None:
return (parsed_date, "date")
if not strictly_valid:
raise ValueError("Weirdness with leading zeroes or "
"underscores in your number.")
itype = "int"
neg = False
if v[0] == '-':
neg = True
v = v[1:]
elif v[0] == '+':
v = v[1:]
v = v.replace('_', '')
lowerv = v.lower()
if '.' in v or ('x' not in v and ('e' in v or 'E' in v)):
if '.' in v and v.split('.', 1)[1] == '':
raise ValueError("This float is missing digits after "
"the point")
if v[0] not in '0123456789':
raise ValueError("This float doesn't have a leading "
"digit")
v = float(v)
itype = "float"
elif len(lowerv) == 3 and (lowerv == 'inf' or lowerv == 'nan'):
v = float(v)
itype = "float"
if itype == "int":
v = int(v, 0)
if neg:
return (0 - v, itype)
return (v, itype)
def bounded_string(self, s):
if len(s) == 0:
return True
if s[-1] != s[0]:
return False
i = -2
backslash = False
while len(s) + i > 0:
if s[i] == "\\":
backslash = not backslash
i -= 1
else:
break
return not backslash
def _load_array_isstrarray(self, a):
a = a[1:-1].strip()
if a != '' and (a[0] == '"' or a[0] == "'"):
return True
return False
def load_array(self, a):
atype = None
retval = []
a = a.strip()
if '[' not in a[1:-1] or "" != a[1:-1].split('[')[0].strip():
strarray = self._load_array_isstrarray(a)
if not a[1:-1].strip().startswith('{'):
a = a[1:-1].split(',')
else:
# a is an inline object, we must find the matching parenthesis
# to define groups
new_a = []
start_group_index = 1
end_group_index = 2
open_bracket_count = 1 if a[start_group_index] == '{' else 0
in_str = False
while end_group_index < len(a[1:]):
if a[end_group_index] == '"' or a[end_group_index] == "'":
if in_str:
backslash_index = end_group_index - 1
while (backslash_index > -1 and
a[backslash_index] == '\\'):
in_str = not in_str
backslash_index -= 1
in_str = not in_str
if not in_str and a[end_group_index] == '{':
open_bracket_count += 1
if in_str or a[end_group_index] != '}':
end_group_index += 1
continue
elif a[end_group_index] == '}' and open_bracket_count > 1:
open_bracket_count -= 1
end_group_index += 1
continue
# Increase end_group_index by 1 to get the closing bracket
end_group_index += 1
new_a.append(a[start_group_index:end_group_index])
# The next start index is at least after the closing
# bracket, a closing bracket can be followed by a comma
# since we are in an array.
start_group_index = end_group_index + 1
while (start_group_index < len(a[1:]) and
a[start_group_index] != '{'):
start_group_index += 1
end_group_index = start_group_index + 1
a = new_a
b = 0
if strarray:
while b < len(a) - 1:
ab = a[b].strip()
while (not self.bounded_string(ab) or
(len(ab) > 2 and
ab[0] == ab[1] == ab[2] and
ab[-2] != ab[0] and
ab[-3] != ab[0])):
a[b] = a[b] + ',' + a[b + 1]
ab = a[b].strip()
if b < len(a) - 2:
a = a[:b + 1] + a[b + 2:]
else:
a = a[:b + 1]
b += 1
else:
al = list(a[1:-1])
a = []
openarr = 0
j = 0
for i in _range(len(al)):
if al[i] == '[':
openarr += 1
elif al[i] == ']':
openarr -= 1
elif al[i] == ',' and not openarr:
a.append(''.join(al[j:i]))
j = i + 1
a.append(''.join(al[j:]))
for i in _range(len(a)):
a[i] = a[i].strip()
if a[i] != '':
nval, ntype = self.load_value(a[i])
if atype:
if ntype != atype:
raise ValueError("Not a homogeneous array")
else:
atype = ntype
retval.append(nval)
return retval
def preserve_comment(self, line_no, key, comment, beginline):
pass
def embed_comments(self, idx, currentlevel):
pass
class TomlPreserveCommentDecoder(TomlDecoder):
def __init__(self, _dict=dict):
self.saved_comments = {}
super(TomlPreserveCommentDecoder, self).__init__(_dict)
def preserve_comment(self, line_no, key, comment, beginline):
self.saved_comments[line_no] = (key, comment, beginline)
def embed_comments(self, idx, currentlevel):
if idx not in self.saved_comments:
return
key, comment, beginline = self.saved_comments[idx]
currentlevel[key] = CommentValue(currentlevel[key], comment, beginline,
self._dict)
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/toml/tz.py
|
from datetime import tzinfo, timedelta
class TomlTz(tzinfo):
def __init__(self, toml_offset):
if toml_offset == "Z":
self._raw_offset = "+00:00"
else:
self._raw_offset = toml_offset
self._sign = -1 if self._raw_offset[0] == '-' else 1
self._hours = int(self._raw_offset[1:3])
self._minutes = int(self._raw_offset[4:6])
def __deepcopy__(self, memo):
return self.__class__(self._raw_offset)
def tzname(self, dt):
return "UTC" + self._raw_offset
def utcoffset(self, dt):
return self._sign * timedelta(hours=self._hours, minutes=self._minutes)
def dst(self, dt):
return timedelta(0)
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/toml/__init__.py
|
"""Python module which parses and emits TOML.
Released under the MIT license.
"""
from toml import encoder
from toml import decoder
__version__ = "0.10.2"
_spec_ = "0.5.0"
load = decoder.load
loads = decoder.loads
TomlDecoder = decoder.TomlDecoder
TomlDecodeError = decoder.TomlDecodeError
TomlPreserveCommentDecoder = decoder.TomlPreserveCommentDecoder
dump = encoder.dump
dumps = encoder.dumps
TomlEncoder = encoder.TomlEncoder
TomlArraySeparatorEncoder = encoder.TomlArraySeparatorEncoder
TomlPreserveInlineDictEncoder = encoder.TomlPreserveInlineDictEncoder
TomlNumpyEncoder = encoder.TomlNumpyEncoder
TomlPreserveCommentEncoder = encoder.TomlPreserveCommentEncoder
TomlPathlibEncoder = encoder.TomlPathlibEncoder
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/toml/encoder.py
|
import datetime
import re
import sys
from decimal import Decimal
from toml.decoder import InlineTableDict
if sys.version_info >= (3,):
unicode = str
def dump(o, f, encoder=None):
"""Writes out dict as toml to a file
Args:
o: Object to dump into toml
f: File descriptor where the toml should be stored
encoder: The ``TomlEncoder`` to use for constructing the output string
Returns:
String containing the toml corresponding to dictionary
Raises:
TypeError: When anything other than file descriptor is passed
"""
if not f.write:
raise TypeError("You can only dump an object to a file descriptor")
d = dumps(o, encoder=encoder)
f.write(d)
return d
def dumps(o, encoder=None):
"""Stringifies input dict as toml
Args:
o: Object to dump into toml
encoder: The ``TomlEncoder`` to use for constructing the output string
Returns:
String containing the toml corresponding to dict
Examples:
```python
>>> import toml
>>> output = {
... 'a': "I'm a string",
... 'b': ["I'm", "a", "list"],
... 'c': 2400
... }
>>> toml.dumps(output)
'a = "I\'m a string"\nb = [ "I\'m", "a", "list",]\nc = 2400\n'
```
"""
retval = ""
if encoder is None:
encoder = TomlEncoder(o.__class__)
addtoretval, sections = encoder.dump_sections(o, "")
retval += addtoretval
outer_objs = [id(o)]
while sections:
section_ids = [id(section) for section in sections.values()]
for outer_obj in outer_objs:
if outer_obj in section_ids:
raise ValueError("Circular reference detected")
outer_objs += section_ids
newsections = encoder.get_empty_table()
for section in sections:
addtoretval, addtosections = encoder.dump_sections(
sections[section], section)
if addtoretval or (not addtoretval and not addtosections):
if retval and retval[-2:] != "\n\n":
retval += "\n"
retval += "[" + section + "]\n"
if addtoretval:
retval += addtoretval
for s in addtosections:
newsections[section + "." + s] = addtosections[s]
sections = newsections
return retval
def _dump_str(v):
if sys.version_info < (3,) and hasattr(v, 'decode') and isinstance(v, str):
v = v.decode('utf-8')
v = "%r" % v
if v[0] == 'u':
v = v[1:]
singlequote = v.startswith("'")
if singlequote or v.startswith('"'):
v = v[1:-1]
if singlequote:
v = v.replace("\\'", "'")
v = v.replace('"', '\\"')
v = v.split("\\x")
while len(v) > 1:
i = -1
if not v[0]:
v = v[1:]
v[0] = v[0].replace("\\\\", "\\")
# No, I don't know why != works and == breaks
joinx = v[0][i] != "\\"
while v[0][:i] and v[0][i] == "\\":
joinx = not joinx
i -= 1
if joinx:
joiner = "x"
else:
joiner = "u00"
v = [v[0] + joiner + v[1]] + v[2:]
return unicode('"' + v[0] + '"')
def _dump_float(v):
return "{}".format(v).replace("e+0", "e+").replace("e-0", "e-")
def _dump_time(v):
utcoffset = v.utcoffset()
if utcoffset is None:
return v.isoformat()
# The TOML norm specifies that it's local time thus we drop the offset
return v.isoformat()[:-6]
class TomlEncoder(object):
def __init__(self, _dict=dict, preserve=False):
self._dict = _dict
self.preserve = preserve
self.dump_funcs = {
str: _dump_str,
unicode: _dump_str,
list: self.dump_list,
bool: lambda v: unicode(v).lower(),
int: lambda v: v,
float: _dump_float,
Decimal: _dump_float,
datetime.datetime: lambda v: v.isoformat().replace('+00:00', 'Z'),
datetime.time: _dump_time,
datetime.date: lambda v: v.isoformat()
}
def get_empty_table(self):
return self._dict()
def dump_list(self, v):
retval = "["
for u in v:
retval += " " + unicode(self.dump_value(u)) + ","
retval += "]"
return retval
def dump_inline_table(self, section):
"""Preserve inline table in its compact syntax instead of expanding
into subsection.
https://github.com/toml-lang/toml#user-content-inline-table
"""
retval = ""
if isinstance(section, dict):
val_list = []
for k, v in section.items():
val = self.dump_inline_table(v)
val_list.append(k + " = " + val)
retval += "{ " + ", ".join(val_list) + " }\n"
return retval
else:
return unicode(self.dump_value(section))
def dump_value(self, v):
# Lookup function corresponding to v's type
dump_fn = self.dump_funcs.get(type(v))
if dump_fn is None and hasattr(v, '__iter__'):
dump_fn = self.dump_funcs[list]
# Evaluate function (if it exists) else return v
return dump_fn(v) if dump_fn is not None else self.dump_funcs[str](v)
def dump_sections(self, o, sup):
retstr = ""
if sup != "" and sup[-1] != ".":
sup += '.'
retdict = self._dict()
arraystr = ""
for section in o:
section = unicode(section)
qsection = section
if not re.match(r'^[A-Za-z0-9_-]+$', section):
qsection = _dump_str(section)
if not isinstance(o[section], dict):
arrayoftables = False
if isinstance(o[section], list):
for a in o[section]:
if isinstance(a, dict):
arrayoftables = True
if arrayoftables:
for a in o[section]:
arraytabstr = "\n"
arraystr += "[[" + sup + qsection + "]]\n"
s, d = self.dump_sections(a, sup + qsection)
if s:
if s[0] == "[":
arraytabstr += s
else:
arraystr += s
while d:
newd = self._dict()
for dsec in d:
s1, d1 = self.dump_sections(d[dsec], sup +
qsection + "." +
dsec)
if s1:
arraytabstr += ("[" + sup + qsection +
"." + dsec + "]\n")
arraytabstr += s1
for s1 in d1:
newd[dsec + "." + s1] = d1[s1]
d = newd
arraystr += arraytabstr
else:
if o[section] is not None:
retstr += (qsection + " = " +
unicode(self.dump_value(o[section])) + '\n')
elif self.preserve and isinstance(o[section], InlineTableDict):
retstr += (qsection + " = " +
self.dump_inline_table(o[section]))
else:
retdict[qsection] = o[section]
retstr += arraystr
return (retstr, retdict)
class TomlPreserveInlineDictEncoder(TomlEncoder):
def __init__(self, _dict=dict):
super(TomlPreserveInlineDictEncoder, self).__init__(_dict, True)
class TomlArraySeparatorEncoder(TomlEncoder):
def __init__(self, _dict=dict, preserve=False, separator=","):
super(TomlArraySeparatorEncoder, self).__init__(_dict, preserve)
if separator.strip() == "":
separator = "," + separator
elif separator.strip(' \t\n\r,'):
raise ValueError("Invalid separator for arrays")
self.separator = separator
def dump_list(self, v):
t = []
retval = "["
for u in v:
t.append(self.dump_value(u))
while t != []:
s = []
for u in t:
if isinstance(u, list):
for r in u:
s.append(r)
else:
retval += " " + unicode(u) + self.separator
t = s
retval += "]"
return retval
class TomlNumpyEncoder(TomlEncoder):
def __init__(self, _dict=dict, preserve=False):
import numpy as np
super(TomlNumpyEncoder, self).__init__(_dict, preserve)
self.dump_funcs[np.float16] = _dump_float
self.dump_funcs[np.float32] = _dump_float
self.dump_funcs[np.float64] = _dump_float
self.dump_funcs[np.int16] = self._dump_int
self.dump_funcs[np.int32] = self._dump_int
self.dump_funcs[np.int64] = self._dump_int
def _dump_int(self, v):
return "{}".format(int(v))
class TomlPreserveCommentEncoder(TomlEncoder):
def __init__(self, _dict=dict, preserve=False):
from toml.decoder import CommentValue
super(TomlPreserveCommentEncoder, self).__init__(_dict, preserve)
self.dump_funcs[CommentValue] = lambda v: v.dump(self.dump_value)
class TomlPathlibEncoder(TomlEncoder):
def _dump_pathlib_path(self, v):
return _dump_str(str(v))
def dump_value(self, v):
if (3, 4) <= sys.version_info:
import pathlib
if isinstance(v, pathlib.PurePath):
v = str(v)
return super(TomlPathlibEncoder, self).dump_value(v)
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/toml/ordered.py
|
from collections import OrderedDict
from toml import TomlEncoder
from toml import TomlDecoder
class TomlOrderedDecoder(TomlDecoder):
def __init__(self):
super(self.__class__, self).__init__(_dict=OrderedDict)
class TomlOrderedEncoder(TomlEncoder):
def __init__(self):
super(self.__class__, self).__init__(_dict=OrderedDict)
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/markupsafe/_constants.py
|
# -*- coding: utf-8 -*-
"""
markupsafe._constants
~~~~~~~~~~~~~~~~~~~~~
:copyright: 2010 Pallets
:license: BSD-3-Clause
"""
HTML_ENTITIES = {
"AElig": 198,
"Aacute": 193,
"Acirc": 194,
"Agrave": 192,
"Alpha": 913,
"Aring": 197,
"Atilde": 195,
"Auml": 196,
"Beta": 914,
"Ccedil": 199,
"Chi": 935,
"Dagger": 8225,
"Delta": 916,
"ETH": 208,
"Eacute": 201,
"Ecirc": 202,
"Egrave": 200,
"Epsilon": 917,
"Eta": 919,
"Euml": 203,
"Gamma": 915,
"Iacute": 205,
"Icirc": 206,
"Igrave": 204,
"Iota": 921,
"Iuml": 207,
"Kappa": 922,
"Lambda": 923,
"Mu": 924,
"Ntilde": 209,
"Nu": 925,
"OElig": 338,
"Oacute": 211,
"Ocirc": 212,
"Ograve": 210,
"Omega": 937,
"Omicron": 927,
"Oslash": 216,
"Otilde": 213,
"Ouml": 214,
"Phi": 934,
"Pi": 928,
"Prime": 8243,
"Psi": 936,
"Rho": 929,
"Scaron": 352,
"Sigma": 931,
"THORN": 222,
"Tau": 932,
"Theta": 920,
"Uacute": 218,
"Ucirc": 219,
"Ugrave": 217,
"Upsilon": 933,
"Uuml": 220,
"Xi": 926,
"Yacute": 221,
"Yuml": 376,
"Zeta": 918,
"aacute": 225,
"acirc": 226,
"acute": 180,
"aelig": 230,
"agrave": 224,
"alefsym": 8501,
"alpha": 945,
"amp": 38,
"and": 8743,
"ang": 8736,
"apos": 39,
"aring": 229,
"asymp": 8776,
"atilde": 227,
"auml": 228,
"bdquo": 8222,
"beta": 946,
"brvbar": 166,
"bull": 8226,
"cap": 8745,
"ccedil": 231,
"cedil": 184,
"cent": 162,
"chi": 967,
"circ": 710,
"clubs": 9827,
"cong": 8773,
"copy": 169,
"crarr": 8629,
"cup": 8746,
"curren": 164,
"dArr": 8659,
"dagger": 8224,
"darr": 8595,
"deg": 176,
"delta": 948,
"diams": 9830,
"divide": 247,
"eacute": 233,
"ecirc": 234,
"egrave": 232,
"empty": 8709,
"emsp": 8195,
"ensp": 8194,
"epsilon": 949,
"equiv": 8801,
"eta": 951,
"eth": 240,
"euml": 235,
"euro": 8364,
"exist": 8707,
"fnof": 402,
"forall": 8704,
"frac12": 189,
"frac14": 188,
"frac34": 190,
"frasl": 8260,
"gamma": 947,
"ge": 8805,
"gt": 62,
"hArr": 8660,
"harr": 8596,
"hearts": 9829,
"hellip": 8230,
"iacute": 237,
"icirc": 238,
"iexcl": 161,
"igrave": 236,
"image": 8465,
"infin": 8734,
"int": 8747,
"iota": 953,
"iquest": 191,
"isin": 8712,
"iuml": 239,
"kappa": 954,
"lArr": 8656,
"lambda": 955,
"lang": 9001,
"laquo": 171,
"larr": 8592,
"lceil": 8968,
"ldquo": 8220,
"le": 8804,
"lfloor": 8970,
"lowast": 8727,
"loz": 9674,
"lrm": 8206,
"lsaquo": 8249,
"lsquo": 8216,
"lt": 60,
"macr": 175,
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| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/markupsafe/__init__.py
|
# -*- coding: utf-8 -*-
"""
markupsafe
~~~~~~~~~~
Implements an escape function and a Markup string to replace HTML
special characters with safe representations.
:copyright: 2010 Pallets
:license: BSD-3-Clause
"""
import re
import string
from ._compat import int_types
from ._compat import iteritems
from ._compat import Mapping
from ._compat import PY2
from ._compat import string_types
from ._compat import text_type
from ._compat import unichr
__version__ = "1.1.1"
__all__ = ["Markup", "soft_unicode", "escape", "escape_silent"]
_striptags_re = re.compile(r"(<!--.*?-->|<[^>]*>)")
_entity_re = re.compile(r"&([^& ;]+);")
class Markup(text_type):
"""A string that is ready to be safely inserted into an HTML or XML
document, either because it was escaped or because it was marked
safe.
Passing an object to the constructor converts it to text and wraps
it to mark it safe without escaping. To escape the text, use the
:meth:`escape` class method instead.
>>> Markup('Hello, <em>World</em>!')
Markup('Hello, <em>World</em>!')
>>> Markup(42)
Markup('42')
>>> Markup.escape('Hello, <em>World</em>!')
Markup('Hello <em>World</em>!')
This implements the ``__html__()`` interface that some frameworks
use. Passing an object that implements ``__html__()`` will wrap the
output of that method, marking it safe.
>>> class Foo:
... def __html__(self):
... return '<a href="/foo">foo</a>'
...
>>> Markup(Foo())
Markup('<a href="/foo">foo</a>')
This is a subclass of the text type (``str`` in Python 3,
``unicode`` in Python 2). It has the same methods as that type, but
all methods escape their arguments and return a ``Markup`` instance.
>>> Markup('<em>%s</em>') % 'foo & bar'
Markup('<em>foo & bar</em>')
>>> Markup('<em>Hello</em> ') + '<foo>'
Markup('<em>Hello</em> <foo>')
"""
__slots__ = ()
def __new__(cls, base=u"", encoding=None, errors="strict"):
if hasattr(base, "__html__"):
base = base.__html__()
if encoding is None:
return text_type.__new__(cls, base)
return text_type.__new__(cls, base, encoding, errors)
def __html__(self):
return self
def __add__(self, other):
if isinstance(other, string_types) or hasattr(other, "__html__"):
return self.__class__(super(Markup, self).__add__(self.escape(other)))
return NotImplemented
def __radd__(self, other):
if hasattr(other, "__html__") or isinstance(other, string_types):
return self.escape(other).__add__(self)
return NotImplemented
def __mul__(self, num):
if isinstance(num, int_types):
return self.__class__(text_type.__mul__(self, num))
return NotImplemented
__rmul__ = __mul__
def __mod__(self, arg):
if isinstance(arg, tuple):
arg = tuple(_MarkupEscapeHelper(x, self.escape) for x in arg)
else:
arg = _MarkupEscapeHelper(arg, self.escape)
return self.__class__(text_type.__mod__(self, arg))
def __repr__(self):
return "%s(%s)" % (self.__class__.__name__, text_type.__repr__(self))
def join(self, seq):
return self.__class__(text_type.join(self, map(self.escape, seq)))
join.__doc__ = text_type.join.__doc__
def split(self, *args, **kwargs):
return list(map(self.__class__, text_type.split(self, *args, **kwargs)))
split.__doc__ = text_type.split.__doc__
def rsplit(self, *args, **kwargs):
return list(map(self.__class__, text_type.rsplit(self, *args, **kwargs)))
rsplit.__doc__ = text_type.rsplit.__doc__
def splitlines(self, *args, **kwargs):
return list(map(self.__class__, text_type.splitlines(self, *args, **kwargs)))
splitlines.__doc__ = text_type.splitlines.__doc__
def unescape(self):
"""Convert escaped markup back into a text string. This replaces
HTML entities with the characters they represent.
>>> Markup('Main » <em>About</em>').unescape()
'Main » <em>About</em>'
"""
from ._constants import HTML_ENTITIES
def handle_match(m):
name = m.group(1)
if name in HTML_ENTITIES:
return unichr(HTML_ENTITIES[name])
try:
if name[:2] in ("#x", "#X"):
return unichr(int(name[2:], 16))
elif name.startswith("#"):
return unichr(int(name[1:]))
except ValueError:
pass
# Don't modify unexpected input.
return m.group()
return _entity_re.sub(handle_match, text_type(self))
def striptags(self):
""":meth:`unescape` the markup, remove tags, and normalize
whitespace to single spaces.
>>> Markup('Main »\t<em>About</em>').striptags()
'Main » About'
"""
stripped = u" ".join(_striptags_re.sub("", self).split())
return Markup(stripped).unescape()
@classmethod
def escape(cls, s):
"""Escape a string. Calls :func:`escape` and ensures that for
subclasses the correct type is returned.
"""
rv = escape(s)
if rv.__class__ is not cls:
return cls(rv)
return rv
def make_simple_escaping_wrapper(name): # noqa: B902
orig = getattr(text_type, name)
def func(self, *args, **kwargs):
args = _escape_argspec(list(args), enumerate(args), self.escape)
_escape_argspec(kwargs, iteritems(kwargs), self.escape)
return self.__class__(orig(self, *args, **kwargs))
func.__name__ = orig.__name__
func.__doc__ = orig.__doc__
return func
for method in (
"__getitem__",
"capitalize",
"title",
"lower",
"upper",
"replace",
"ljust",
"rjust",
"lstrip",
"rstrip",
"center",
"strip",
"translate",
"expandtabs",
"swapcase",
"zfill",
):
locals()[method] = make_simple_escaping_wrapper(method)
def partition(self, sep):
return tuple(map(self.__class__, text_type.partition(self, self.escape(sep))))
def rpartition(self, sep):
return tuple(map(self.__class__, text_type.rpartition(self, self.escape(sep))))
def format(self, *args, **kwargs):
formatter = EscapeFormatter(self.escape)
kwargs = _MagicFormatMapping(args, kwargs)
return self.__class__(formatter.vformat(self, args, kwargs))
def __html_format__(self, format_spec):
if format_spec:
raise ValueError("Unsupported format specification " "for Markup.")
return self
# not in python 3
if hasattr(text_type, "__getslice__"):
__getslice__ = make_simple_escaping_wrapper("__getslice__")
del method, make_simple_escaping_wrapper
class _MagicFormatMapping(Mapping):
"""This class implements a dummy wrapper to fix a bug in the Python
standard library for string formatting.
See http://bugs.python.org/issue13598 for information about why
this is necessary.
"""
def __init__(self, args, kwargs):
self._args = args
self._kwargs = kwargs
self._last_index = 0
def __getitem__(self, key):
if key == "":
idx = self._last_index
self._last_index += 1
try:
return self._args[idx]
except LookupError:
pass
key = str(idx)
return self._kwargs[key]
def __iter__(self):
return iter(self._kwargs)
def __len__(self):
return len(self._kwargs)
if hasattr(text_type, "format"):
class EscapeFormatter(string.Formatter):
def __init__(self, escape):
self.escape = escape
def format_field(self, value, format_spec):
if hasattr(value, "__html_format__"):
rv = value.__html_format__(format_spec)
elif hasattr(value, "__html__"):
if format_spec:
raise ValueError(
"Format specifier {0} given, but {1} does not"
" define __html_format__. A class that defines"
" __html__ must define __html_format__ to work"
" with format specifiers.".format(format_spec, type(value))
)
rv = value.__html__()
else:
# We need to make sure the format spec is unicode here as
# otherwise the wrong callback methods are invoked. For
# instance a byte string there would invoke __str__ and
# not __unicode__.
rv = string.Formatter.format_field(self, value, text_type(format_spec))
return text_type(self.escape(rv))
def _escape_argspec(obj, iterable, escape):
"""Helper for various string-wrapped functions."""
for key, value in iterable:
if hasattr(value, "__html__") or isinstance(value, string_types):
obj[key] = escape(value)
return obj
class _MarkupEscapeHelper(object):
"""Helper for Markup.__mod__"""
def __init__(self, obj, escape):
self.obj = obj
self.escape = escape
def __getitem__(self, item):
return _MarkupEscapeHelper(self.obj[item], self.escape)
def __str__(self):
return text_type(self.escape(self.obj))
__unicode__ = __str__
def __repr__(self):
return str(self.escape(repr(self.obj)))
def __int__(self):
return int(self.obj)
def __float__(self):
return float(self.obj)
# we have to import it down here as the speedups and native
# modules imports the markup type which is define above.
try:
from ._speedups import escape, escape_silent, soft_unicode
except ImportError:
from ._native import escape, escape_silent, soft_unicode
if not PY2:
soft_str = soft_unicode
__all__.append("soft_str")
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/markupsafe/_native.py
|
# -*- coding: utf-8 -*-
"""
markupsafe._native
~~~~~~~~~~~~~~~~~~
Native Python implementation used when the C module is not compiled.
:copyright: 2010 Pallets
:license: BSD-3-Clause
"""
from . import Markup
from ._compat import text_type
def escape(s):
"""Replace the characters ``&``, ``<``, ``>``, ``'``, and ``"`` in
the string with HTML-safe sequences. Use this if you need to display
text that might contain such characters in HTML.
If the object has an ``__html__`` method, it is called and the
return value is assumed to already be safe for HTML.
:param s: An object to be converted to a string and escaped.
:return: A :class:`Markup` string with the escaped text.
"""
if hasattr(s, "__html__"):
return Markup(s.__html__())
return Markup(
text_type(s)
.replace("&", "&")
.replace(">", ">")
.replace("<", "<")
.replace("'", "'")
.replace('"', """)
)
def escape_silent(s):
"""Like :func:`escape` but treats ``None`` as the empty string.
Useful with optional values, as otherwise you get the string
``'None'`` when the value is ``None``.
>>> escape(None)
Markup('None')
>>> escape_silent(None)
Markup('')
"""
if s is None:
return Markup()
return escape(s)
def soft_unicode(s):
"""Convert an object to a string if it isn't already. This preserves
a :class:`Markup` string rather than converting it back to a basic
string, so it will still be marked as safe and won't be escaped
again.
>>> value = escape('<User 1>')
>>> value
Markup('<User 1>')
>>> escape(str(value))
Markup('&lt;User 1&gt;')
>>> escape(soft_unicode(value))
Markup('<User 1>')
"""
if not isinstance(s, text_type):
s = text_type(s)
return s
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/markupsafe/_compat.py
|
# -*- coding: utf-8 -*-
"""
markupsafe._compat
~~~~~~~~~~~~~~~~~~
:copyright: 2010 Pallets
:license: BSD-3-Clause
"""
import sys
PY2 = sys.version_info[0] == 2
if not PY2:
text_type = str
string_types = (str,)
unichr = chr
int_types = (int,)
def iteritems(x):
return iter(x.items())
from collections.abc import Mapping
else:
text_type = unicode
string_types = (str, unicode)
unichr = unichr
int_types = (int, long)
def iteritems(x):
return x.iteritems()
from collections import Mapping
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/setuptools-49.2.1.dist-info/zip-safe
| 0 |
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qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
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qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/setuptools-49.2.1.dist-info/RECORD
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setuptools/sandbox.py,sha256=KOWl011mwUX2OdLmcTM690CTOneZEJxK9RIXbXyGL_o,14251
setuptools/script (dev).tmpl,sha256=RUzQzCQUaXtwdLtYHWYbIQmOaES5Brqq1FvUA_tu-5I,218
setuptools/script.tmpl,sha256=WGTt5piezO27c-Dbx6l5Q4T3Ff20A5z7872hv3aAhYY,138
setuptools/ssl_support.py,sha256=TNNOq3VyV-4wkRwm0dmyIzF-iXBeWv4yIQ99eWa_bV8,8543
setuptools/unicode_utils.py,sha256=NOiZ_5hD72A6w-4wVj8awHFM3n51Kmw1Ic_vx15XFqw,996
setuptools/version.py,sha256=og_cuZQb0QI6ukKZFfZWPlr1HgJBPPn2vO2m_bI9ZTE,144
setuptools/wheel.py,sha256=YLN2fczDVxkX3wjHlt_EMh-4MfHO6Ns6ldRpnkn-aa8,8371
setuptools/windows_support.py,sha256=5GrfqSP2-dLGJoZTq2g6dCKkyQxxa2n5IQiXlJCoYEE,714
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qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/setuptools-49.2.1.dist-info/LICENSE
|
Copyright (C) 2016 Jason R Coombs <jaraco@jaraco.com>
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
| 0 |
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qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/setuptools-49.2.1.dist-info/WHEEL
|
Wheel-Version: 1.0
Generator: bdist_wheel (0.34.2)
Root-Is-Purelib: true
Tag: py3-none-any
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
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qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/setuptools-49.2.1.dist-info/entry_points.txt
|
[console_scripts]
easy_install = setuptools.command.easy_install:main
easy_install-3.8 = setuptools.command.easy_install:main
[distutils.commands]
alias = setuptools.command.alias:alias
bdist_egg = setuptools.command.bdist_egg:bdist_egg
bdist_rpm = setuptools.command.bdist_rpm:bdist_rpm
bdist_wininst = setuptools.command.bdist_wininst:bdist_wininst
build_clib = setuptools.command.build_clib:build_clib
build_ext = setuptools.command.build_ext:build_ext
build_py = setuptools.command.build_py:build_py
develop = setuptools.command.develop:develop
dist_info = setuptools.command.dist_info:dist_info
easy_install = setuptools.command.easy_install:easy_install
egg_info = setuptools.command.egg_info:egg_info
install = setuptools.command.install:install
install_egg_info = setuptools.command.install_egg_info:install_egg_info
install_lib = setuptools.command.install_lib:install_lib
install_scripts = setuptools.command.install_scripts:install_scripts
rotate = setuptools.command.rotate:rotate
saveopts = setuptools.command.saveopts:saveopts
sdist = setuptools.command.sdist:sdist
setopt = setuptools.command.setopt:setopt
test = setuptools.command.test:test
upload_docs = setuptools.command.upload_docs:upload_docs
[distutils.setup_keywords]
convert_2to3_doctests = setuptools.dist:assert_string_list
dependency_links = setuptools.dist:assert_string_list
eager_resources = setuptools.dist:assert_string_list
entry_points = setuptools.dist:check_entry_points
exclude_package_data = setuptools.dist:check_package_data
extras_require = setuptools.dist:check_extras
include_package_data = setuptools.dist:assert_bool
install_requires = setuptools.dist:check_requirements
namespace_packages = setuptools.dist:check_nsp
package_data = setuptools.dist:check_package_data
packages = setuptools.dist:check_packages
python_requires = setuptools.dist:check_specifier
setup_requires = setuptools.dist:check_requirements
test_loader = setuptools.dist:check_importable
test_runner = setuptools.dist:check_importable
test_suite = setuptools.dist:check_test_suite
tests_require = setuptools.dist:check_requirements
use_2to3 = setuptools.dist:assert_bool
use_2to3_exclude_fixers = setuptools.dist:assert_string_list
use_2to3_fixers = setuptools.dist:assert_string_list
zip_safe = setuptools.dist:assert_bool
[egg_info.writers]
PKG-INFO = setuptools.command.egg_info:write_pkg_info
dependency_links.txt = setuptools.command.egg_info:overwrite_arg
depends.txt = setuptools.command.egg_info:warn_depends_obsolete
eager_resources.txt = setuptools.command.egg_info:overwrite_arg
entry_points.txt = setuptools.command.egg_info:write_entries
namespace_packages.txt = setuptools.command.egg_info:overwrite_arg
requires.txt = setuptools.command.egg_info:write_requirements
top_level.txt = setuptools.command.egg_info:write_toplevel_names
[setuptools.finalize_distribution_options]
2to3_doctests = setuptools.dist:Distribution._finalize_2to3_doctests
keywords = setuptools.dist:Distribution._finalize_setup_keywords
parent_finalize = setuptools.dist:_Distribution.finalize_options
[setuptools.installation]
eggsecutable = setuptools.command.easy_install:bootstrap
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qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/setuptools-49.2.1.dist-info/top_level.txt
|
easy_install
pkg_resources
setuptools
| 0 |
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qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/setuptools-49.2.1.dist-info/dependency_links.txt
|
https://files.pythonhosted.org/packages/source/c/certifi/certifi-2016.9.26.tar.gz#md5=baa81e951a29958563689d868ef1064d
https://files.pythonhosted.org/packages/source/w/wincertstore/wincertstore-0.2.zip#md5=ae728f2f007185648d0c7a8679b361e2
| 0 |
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qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/setuptools-49.2.1.dist-info/INSTALLER
|
pip
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
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qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/setuptools-49.2.1.dist-info/METADATA
|
Metadata-Version: 2.1
Name: setuptools
Version: 49.2.1
Summary: Easily download, build, install, upgrade, and uninstall Python packages
Home-page: https://github.com/pypa/setuptools
Author: Python Packaging Authority
Author-email: distutils-sig@python.org
License: UNKNOWN
Project-URL: Documentation, https://setuptools.readthedocs.io/
Keywords: CPAN PyPI distutils eggs package management
Platform: UNKNOWN
Classifier: Development Status :: 5 - Production/Stable
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: MIT License
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3 :: Only
Classifier: Programming Language :: Python :: 3.5
Classifier: Programming Language :: Python :: 3.6
Classifier: Programming Language :: Python :: 3.7
Classifier: Programming Language :: Python :: 3.8
Classifier: Topic :: Software Development :: Libraries :: Python Modules
Classifier: Topic :: System :: Archiving :: Packaging
Classifier: Topic :: System :: Systems Administration
Classifier: Topic :: Utilities
Requires-Python: >=3.5
Description-Content-Type: text/x-rst; charset=UTF-8
Provides-Extra: certs
Requires-Dist: certifi (==2016.9.26) ; extra == 'certs'
Provides-Extra: docs
Requires-Dist: sphinx ; extra == 'docs'
Requires-Dist: jaraco.packaging (>=6.1) ; extra == 'docs'
Requires-Dist: rst.linker (>=1.9) ; extra == 'docs'
Requires-Dist: pygments-github-lexers (==0.0.5) ; extra == 'docs'
Provides-Extra: ssl
Requires-Dist: wincertstore (==0.2) ; (sys_platform == "win32") and extra == 'ssl'
Provides-Extra: tests
Requires-Dist: mock ; extra == 'tests'
Requires-Dist: pytest-flake8 ; extra == 'tests'
Requires-Dist: virtualenv (>=13.0.0) ; extra == 'tests'
Requires-Dist: pytest-virtualenv (>=1.2.7) ; extra == 'tests'
Requires-Dist: pytest (>=3.7) ; extra == 'tests'
Requires-Dist: wheel ; extra == 'tests'
Requires-Dist: coverage (>=4.5.1) ; extra == 'tests'
Requires-Dist: pytest-cov (>=2.5.1) ; extra == 'tests'
Requires-Dist: pip (>=19.1) ; extra == 'tests'
Requires-Dist: futures ; (python_version == "2.7") and extra == 'tests'
Requires-Dist: flake8-2020 ; (python_version >= "3.6") and extra == 'tests'
Requires-Dist: paver ; (python_version >= "3.6") and extra == 'tests'
.. image:: https://img.shields.io/pypi/v/setuptools.svg
:target: `PyPI link`_
.. image:: https://img.shields.io/pypi/pyversions/setuptools.svg
:target: `PyPI link`_
.. _PyPI link: https://pypi.org/project/setuptools
.. image:: https://dev.azure.com/jaraco/setuptools/_apis/build/status/pypa.setuptools?branchName=master
:target: https://dev.azure.com/jaraco/setuptools/_build/latest?definitionId=1&branchName=master
.. image:: https://img.shields.io/travis/pypa/setuptools/master.svg?label=Linux%20CI&logo=travis&logoColor=white
:target: https://travis-ci.org/pypa/setuptools
.. image:: https://img.shields.io/appveyor/ci/pypa/setuptools/master.svg?label=Windows%20CI&logo=appveyor&logoColor=white
:target: https://ci.appveyor.com/project/pypa/setuptools/branch/master
.. image:: https://img.shields.io/readthedocs/setuptools/latest.svg
:target: https://setuptools.readthedocs.io
.. image:: https://img.shields.io/codecov/c/github/pypa/setuptools/master.svg?logo=codecov&logoColor=white
:target: https://codecov.io/gh/pypa/setuptools
.. image:: https://tidelift.com/badges/github/pypa/setuptools?style=flat
:target: https://tidelift.com/subscription/pkg/pypi-setuptools?utm_source=pypi-setuptools&utm_medium=readme
See the `Installation Instructions
<https://packaging.python.org/installing/>`_ in the Python Packaging
User's Guide for instructions on installing, upgrading, and uninstalling
Setuptools.
Questions and comments should be directed to the `distutils-sig
mailing list <http://mail.python.org/pipermail/distutils-sig/>`_.
Bug reports and especially tested patches may be
submitted directly to the `bug tracker
<https://github.com/pypa/setuptools/issues>`_.
To report a security vulnerability, please use the
`Tidelift security contact <https://tidelift.com/security>`_.
Tidelift will coordinate the fix and disclosure.
For Enterprise
==============
Available as part of the Tidelift Subscription.
Setuptools and the maintainers of thousands of other packages are working with Tidelift to deliver one enterprise subscription that covers all of the open source you use.
`Learn more <https://tidelift.com/subscription/pkg/pypi-setuptools?utm_source=pypi-setuptools&utm_medium=referral&utm_campaign=github>`_.
Code of Conduct
===============
Everyone interacting in the setuptools project's codebases, issue trackers,
chat rooms, and mailing lists is expected to follow the
`PSF Code of Conduct <https://github.com/pypa/.github/blob/main/CODE_OF_CONDUCT.md>`_.
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qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/itsdangerous-1.1.0.dist-info/RECORD
|
itsdangerous-1.1.0.dist-info/INSTALLER,sha256=zuuue4knoyJ-UwPPXg8fezS7VCrXJQrAP7zeNuwvFQg,4
itsdangerous-1.1.0.dist-info/LICENSE.rst,sha256=_rKL-jSNgWsOfbrt3xhJnufoAHxngT241qs3xl4EbNQ,2120
itsdangerous-1.1.0.dist-info/METADATA,sha256=yyKjL2WOg_WybH2Yt-7NIvGpV3B93IsMc2HbToWc7Sk,3062
itsdangerous-1.1.0.dist-info/RECORD,,
itsdangerous-1.1.0.dist-info/REQUESTED,sha256=47DEQpj8HBSa-_TImW-5JCeuQeRkm5NMpJWZG3hSuFU,0
itsdangerous-1.1.0.dist-info/WHEEL,sha256=CihQvCnsGZQBGAHLEUMf0IdA4fRduS_NBUTMgCTtvPM,110
itsdangerous-1.1.0.dist-info/top_level.txt,sha256=gKN1OKLk81i7fbWWildJA88EQ9NhnGMSvZqhfz9ICjk,13
itsdangerous/__init__.py,sha256=Dr-SkfFdOyiR_WjiqIXnlFpYRMW0XvPBNV5muzE5N_A,708
itsdangerous/__pycache__/__init__.cpython-39.pyc,,
itsdangerous/__pycache__/_compat.cpython-39.pyc,,
itsdangerous/__pycache__/_json.cpython-39.pyc,,
itsdangerous/__pycache__/encoding.cpython-39.pyc,,
itsdangerous/__pycache__/exc.cpython-39.pyc,,
itsdangerous/__pycache__/jws.cpython-39.pyc,,
itsdangerous/__pycache__/serializer.cpython-39.pyc,,
itsdangerous/__pycache__/signer.cpython-39.pyc,,
itsdangerous/__pycache__/timed.cpython-39.pyc,,
itsdangerous/__pycache__/url_safe.cpython-39.pyc,,
itsdangerous/_compat.py,sha256=oAAMcQAjwQXQpIbuHT3o-aL56ztm_7Fe-4lD7IteF6A,1133
itsdangerous/_json.py,sha256=W7BLL4RPnSOjNdo2gfKT3BeARMCIikY6O75rwWV0XoE,431
itsdangerous/encoding.py,sha256=KhY85PsH3bGHe5JANN4LMZ_3b0IwUWRRnnw1wvLlaIg,1224
itsdangerous/exc.py,sha256=KFxg7K2XMliMQAxL4jkRNgE8e73z2jcRaLrzwqVObnI,2959
itsdangerous/jws.py,sha256=6Lh9W-Lu8D9s7bRazs0Zb35eyAZm3pzLeZqHmRELeII,7470
itsdangerous/serializer.py,sha256=bT-dfjKec9zcKa8Qo8n7mHW_8M-XCTPMOFq1TQI_Fv4,8653
itsdangerous/signer.py,sha256=OOZbK8XomBjQfOFEul8osesn7fc80MXB0L1r7E86_GQ,6345
itsdangerous/timed.py,sha256=on5Q5lX7LT_LaETOhzF1ZmrRbia8P98263R8FiRyM6Y,5635
itsdangerous/url_safe.py,sha256=xnFTaukIPmW6Qwn6uNQLgzdau8RuAKnp5N7ukuXykj0,2275
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
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qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/itsdangerous-1.1.0.dist-info/WHEEL
|
Wheel-Version: 1.0
Generator: bdist_wheel (0.32.2)
Root-Is-Purelib: true
Tag: py2-none-any
Tag: py3-none-any
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
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qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/itsdangerous-1.1.0.dist-info/LICENSE.rst
|
`BSD 3-Clause <https://opensource.org/licenses/BSD-3-Clause>`_
Copyright © 2011 by the Pallets team.
Some rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
- Neither the name of the copyright holder nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
We kindly ask you to use these themes in an unmodified manner only with
Pallets and Pallets-related projects, not for unrelated projects. If you
like the visual style and want to use it for your own projects, please
consider making some larger changes to the themes (such as changing font
faces, sizes, colors or margins).
THIS SOFTWARE AND DOCUMENTATION IS PROVIDED BY THE COPYRIGHT HOLDERS AND
CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE AND DOCUMENTATION, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
----
The initial implementation of itsdangerous was inspired by Django's
signing module.
Copyright © Django Software Foundation and individual contributors.
All rights reserved.
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qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/itsdangerous-1.1.0.dist-info/top_level.txt
|
itsdangerous
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
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qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/itsdangerous-1.1.0.dist-info/INSTALLER
|
pip
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
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qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/itsdangerous-1.1.0.dist-info/METADATA
|
Metadata-Version: 2.1
Name: itsdangerous
Version: 1.1.0
Summary: Various helpers to pass data to untrusted environments and back.
Home-page: https://palletsprojects.com/p/itsdangerous/
Author: Armin Ronacher
Author-email: armin.ronacher@active-4.com
Maintainer: Pallets Team
Maintainer-email: contact@palletsprojects.com
License: BSD
Project-URL: Documentation, https://itsdangerous.palletsprojects.com/
Project-URL: Code, https://github.com/pallets/itsdangerous
Project-URL: Issue tracker, https://github.com/pallets/itsdangerous/issues
Platform: UNKNOWN
Classifier: Development Status :: 5 - Production/Stable
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: BSD License
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 2
Classifier: Programming Language :: Python :: 2.7
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.4
Classifier: Programming Language :: Python :: 3.5
Classifier: Programming Language :: Python :: 3.6
Classifier: Programming Language :: Python :: 3.7
Requires-Python: >=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*
itsdangerous
============
... so better sign this
Various helpers to pass data to untrusted environments and to get it
back safe and sound. Data is cryptographically signed to ensure that a
token has not been tampered with.
It's possible to customize how data is serialized. Data is compressed as
needed. A timestamp can be added and verified automatically while
loading a token.
Installing
----------
Install and update using `pip`_:
.. code-block:: text
pip install -U itsdangerous
.. _pip: https://pip.pypa.io/en/stable/quickstart/
A Simple Example
----------------
Here's how you could generate a token for transmitting a user's id and
name between web requests.
.. code-block:: python
from itsdangerous import URLSafeSerializer
auth_s = URLSafeSerializer("secret key", "auth")
token = auth_s.dumps({"id": 5, "name": "itsdangerous"})
print(token)
# eyJpZCI6NSwibmFtZSI6Iml0c2Rhbmdlcm91cyJ9.6YP6T0BaO67XP--9UzTrmurXSmg
data = auth_s.loads(token)
print(data["name"])
# itsdangerous
Donate
------
The Pallets organization develops and supports itsdangerous and other
popular packages. In order to grow the community of contributors and
users, and allow the maintainers to devote more time to the projects,
`please donate today`_.
.. _please donate today: https://palletsprojects.com/donate
Links
-----
* Website: https://palletsprojects.com/p/itsdangerous/
* Documentation: https://itsdangerous.palletsprojects.com/
* License: `BSD <https://github.com/pallets/itsdangerous/blob/master/LICENSE.rst>`_
* Releases: https://pypi.org/project/itsdangerous/
* Code: https://github.com/pallets/itsdangerous
* Issue tracker: https://github.com/pallets/itsdangerous/issues
* Test status: https://travis-ci.org/pallets/itsdangerous
* Test coverage: https://codecov.io/gh/pallets/itsdangerous
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qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/flask_sqlalchemy/__init__.py
|
# -*- coding: utf-8 -*-
from __future__ import absolute_import
import functools
import os
import sys
import time
import warnings
from math import ceil
from operator import itemgetter
from threading import Lock
import sqlalchemy
from flask import _app_ctx_stack, abort, current_app, request
from flask.signals import Namespace
from sqlalchemy import event, inspect, orm
from sqlalchemy.engine.url import make_url
from sqlalchemy.ext.declarative import DeclarativeMeta, declarative_base
from sqlalchemy.orm.exc import UnmappedClassError
from sqlalchemy.orm.session import Session as SessionBase
from flask_sqlalchemy.model import Model
from ._compat import itervalues, string_types, xrange
from .model import DefaultMeta
from . import utils
__version__ = "2.4.3"
# the best timer function for the platform
if sys.platform == 'win32':
if sys.version_info >= (3, 3):
_timer = time.perf_counter
else:
_timer = time.clock
else:
_timer = time.time
_signals = Namespace()
models_committed = _signals.signal('models-committed')
before_models_committed = _signals.signal('before-models-committed')
def _make_table(db):
def _make_table(*args, **kwargs):
if len(args) > 1 and isinstance(args[1], db.Column):
args = (args[0], db.metadata) + args[1:]
info = kwargs.pop('info', None) or {}
info.setdefault('bind_key', None)
kwargs['info'] = info
return sqlalchemy.Table(*args, **kwargs)
return _make_table
def _set_default_query_class(d, cls):
if 'query_class' not in d:
d['query_class'] = cls
def _wrap_with_default_query_class(fn, cls):
@functools.wraps(fn)
def newfn(*args, **kwargs):
_set_default_query_class(kwargs, cls)
if "backref" in kwargs:
backref = kwargs['backref']
if isinstance(backref, string_types):
backref = (backref, {})
_set_default_query_class(backref[1], cls)
return fn(*args, **kwargs)
return newfn
def _include_sqlalchemy(obj, cls):
for module in sqlalchemy, sqlalchemy.orm:
for key in module.__all__:
if not hasattr(obj, key):
setattr(obj, key, getattr(module, key))
# Note: obj.Table does not attempt to be a SQLAlchemy Table class.
obj.Table = _make_table(obj)
obj.relationship = _wrap_with_default_query_class(obj.relationship, cls)
obj.relation = _wrap_with_default_query_class(obj.relation, cls)
obj.dynamic_loader = _wrap_with_default_query_class(obj.dynamic_loader, cls)
obj.event = event
class _DebugQueryTuple(tuple):
statement = property(itemgetter(0))
parameters = property(itemgetter(1))
start_time = property(itemgetter(2))
end_time = property(itemgetter(3))
context = property(itemgetter(4))
@property
def duration(self):
return self.end_time - self.start_time
def __repr__(self):
return '<query statement="%s" parameters=%r duration=%.03f>' % (
self.statement,
self.parameters,
self.duration
)
def _calling_context(app_path):
frm = sys._getframe(1)
while frm.f_back is not None:
name = frm.f_globals.get('__name__')
if name and (name == app_path or name.startswith(app_path + '.')):
funcname = frm.f_code.co_name
return '%s:%s (%s)' % (
frm.f_code.co_filename,
frm.f_lineno,
funcname
)
frm = frm.f_back
return '<unknown>'
class SignallingSession(SessionBase):
"""The signalling session is the default session that Flask-SQLAlchemy
uses. It extends the default session system with bind selection and
modification tracking.
If you want to use a different session you can override the
:meth:`SQLAlchemy.create_session` function.
.. versionadded:: 2.0
.. versionadded:: 2.1
The `binds` option was added, which allows a session to be joined
to an external transaction.
"""
def __init__(self, db, autocommit=False, autoflush=True, **options):
#: The application that this session belongs to.
self.app = app = db.get_app()
track_modifications = app.config['SQLALCHEMY_TRACK_MODIFICATIONS']
bind = options.pop('bind', None) or db.engine
binds = options.pop('binds', db.get_binds(app))
if track_modifications is None or track_modifications:
_SessionSignalEvents.register(self)
SessionBase.__init__(
self, autocommit=autocommit, autoflush=autoflush,
bind=bind, binds=binds, **options
)
def get_bind(self, mapper=None, clause=None):
"""Return the engine or connection for a given model or
table, using the ``__bind_key__`` if it is set.
"""
# mapper is None if someone tries to just get a connection
if mapper is not None:
try:
# SA >= 1.3
persist_selectable = mapper.persist_selectable
except AttributeError:
# SA < 1.3
persist_selectable = mapper.mapped_table
info = getattr(persist_selectable, 'info', {})
bind_key = info.get('bind_key')
if bind_key is not None:
state = get_state(self.app)
return state.db.get_engine(self.app, bind=bind_key)
return SessionBase.get_bind(self, mapper, clause)
class _SessionSignalEvents(object):
@classmethod
def register(cls, session):
if not hasattr(session, '_model_changes'):
session._model_changes = {}
event.listen(session, 'before_flush', cls.record_ops)
event.listen(session, 'before_commit', cls.record_ops)
event.listen(session, 'before_commit', cls.before_commit)
event.listen(session, 'after_commit', cls.after_commit)
event.listen(session, 'after_rollback', cls.after_rollback)
@classmethod
def unregister(cls, session):
if hasattr(session, '_model_changes'):
del session._model_changes
event.remove(session, 'before_flush', cls.record_ops)
event.remove(session, 'before_commit', cls.record_ops)
event.remove(session, 'before_commit', cls.before_commit)
event.remove(session, 'after_commit', cls.after_commit)
event.remove(session, 'after_rollback', cls.after_rollback)
@staticmethod
def record_ops(session, flush_context=None, instances=None):
try:
d = session._model_changes
except AttributeError:
return
for targets, operation in ((session.new, 'insert'), (session.dirty, 'update'), (session.deleted, 'delete')):
for target in targets:
state = inspect(target)
key = state.identity_key if state.has_identity else id(target)
d[key] = (target, operation)
@staticmethod
def before_commit(session):
try:
d = session._model_changes
except AttributeError:
return
if d:
before_models_committed.send(session.app, changes=list(d.values()))
@staticmethod
def after_commit(session):
try:
d = session._model_changes
except AttributeError:
return
if d:
models_committed.send(session.app, changes=list(d.values()))
d.clear()
@staticmethod
def after_rollback(session):
try:
d = session._model_changes
except AttributeError:
return
d.clear()
class _EngineDebuggingSignalEvents(object):
"""Sets up handlers for two events that let us track the execution time of
queries."""
def __init__(self, engine, import_name):
self.engine = engine
self.app_package = import_name
def register(self):
event.listen(
self.engine, 'before_cursor_execute', self.before_cursor_execute
)
event.listen(
self.engine, 'after_cursor_execute', self.after_cursor_execute
)
def before_cursor_execute(
self, conn, cursor, statement, parameters, context, executemany
):
if current_app:
context._query_start_time = _timer()
def after_cursor_execute(
self, conn, cursor, statement, parameters, context, executemany
):
if current_app:
try:
queries = _app_ctx_stack.top.sqlalchemy_queries
except AttributeError:
queries = _app_ctx_stack.top.sqlalchemy_queries = []
queries.append(_DebugQueryTuple((
statement, parameters, context._query_start_time, _timer(),
_calling_context(self.app_package)
)))
def get_debug_queries():
"""In debug mode Flask-SQLAlchemy will log all the SQL queries sent
to the database. This information is available until the end of request
which makes it possible to easily ensure that the SQL generated is the
one expected on errors or in unittesting. If you don't want to enable
the DEBUG mode for your unittests you can also enable the query
recording by setting the ``'SQLALCHEMY_RECORD_QUERIES'`` config variable
to `True`. This is automatically enabled if Flask is in testing mode.
The value returned will be a list of named tuples with the following
attributes:
`statement`
The SQL statement issued
`parameters`
The parameters for the SQL statement
`start_time` / `end_time`
Time the query started / the results arrived. Please keep in mind
that the timer function used depends on your platform. These
values are only useful for sorting or comparing. They do not
necessarily represent an absolute timestamp.
`duration`
Time the query took in seconds
`context`
A string giving a rough estimation of where in your application
query was issued. The exact format is undefined so don't try
to reconstruct filename or function name.
"""
return getattr(_app_ctx_stack.top, 'sqlalchemy_queries', [])
class Pagination(object):
"""Internal helper class returned by :meth:`BaseQuery.paginate`. You
can also construct it from any other SQLAlchemy query object if you are
working with other libraries. Additionally it is possible to pass `None`
as query object in which case the :meth:`prev` and :meth:`next` will
no longer work.
"""
def __init__(self, query, page, per_page, total, items):
#: the unlimited query object that was used to create this
#: pagination object.
self.query = query
#: the current page number (1 indexed)
self.page = page
#: the number of items to be displayed on a page.
self.per_page = per_page
#: the total number of items matching the query
self.total = total
#: the items for the current page
self.items = items
@property
def pages(self):
"""The total number of pages"""
if self.per_page == 0:
pages = 0
else:
pages = int(ceil(self.total / float(self.per_page)))
return pages
def prev(self, error_out=False):
"""Returns a :class:`Pagination` object for the previous page."""
assert self.query is not None, 'a query object is required ' \
'for this method to work'
return self.query.paginate(self.page - 1, self.per_page, error_out)
@property
def prev_num(self):
"""Number of the previous page."""
if not self.has_prev:
return None
return self.page - 1
@property
def has_prev(self):
"""True if a previous page exists"""
return self.page > 1
def next(self, error_out=False):
"""Returns a :class:`Pagination` object for the next page."""
assert self.query is not None, 'a query object is required ' \
'for this method to work'
return self.query.paginate(self.page + 1, self.per_page, error_out)
@property
def has_next(self):
"""True if a next page exists."""
return self.page < self.pages
@property
def next_num(self):
"""Number of the next page"""
if not self.has_next:
return None
return self.page + 1
def iter_pages(self, left_edge=2, left_current=2,
right_current=5, right_edge=2):
"""Iterates over the page numbers in the pagination. The four
parameters control the thresholds how many numbers should be produced
from the sides. Skipped page numbers are represented as `None`.
This is how you could render such a pagination in the templates:
.. sourcecode:: html+jinja
{% macro render_pagination(pagination, endpoint) %}
<div class=pagination>
{%- for page in pagination.iter_pages() %}
{% if page %}
{% if page != pagination.page %}
<a href="{{ url_for(endpoint, page=page) }}">{{ page }}</a>
{% else %}
<strong>{{ page }}</strong>
{% endif %}
{% else %}
<span class=ellipsis>…</span>
{% endif %}
{%- endfor %}
</div>
{% endmacro %}
"""
last = 0
for num in xrange(1, self.pages + 1):
if num <= left_edge or \
(num > self.page - left_current - 1 and
num < self.page + right_current) or \
num > self.pages - right_edge:
if last + 1 != num:
yield None
yield num
last = num
class BaseQuery(orm.Query):
"""SQLAlchemy :class:`~sqlalchemy.orm.query.Query` subclass with convenience methods for querying in a web application.
This is the default :attr:`~Model.query` object used for models, and exposed as :attr:`~SQLAlchemy.Query`.
Override the query class for an individual model by subclassing this and setting :attr:`~Model.query_class`.
"""
def get_or_404(self, ident, description=None):
"""Like :meth:`get` but aborts with 404 if not found instead of returning ``None``."""
rv = self.get(ident)
if rv is None:
abort(404, description=description)
return rv
def first_or_404(self, description=None):
"""Like :meth:`first` but aborts with 404 if not found instead of returning ``None``."""
rv = self.first()
if rv is None:
abort(404, description=description)
return rv
def paginate(self, page=None, per_page=None, error_out=True, max_per_page=None):
"""Returns ``per_page`` items from page ``page``.
If ``page`` or ``per_page`` are ``None``, they will be retrieved from
the request query. If ``max_per_page`` is specified, ``per_page`` will
be limited to that value. If there is no request or they aren't in the
query, they default to 1 and 20 respectively.
When ``error_out`` is ``True`` (default), the following rules will
cause a 404 response:
* No items are found and ``page`` is not 1.
* ``page`` is less than 1, or ``per_page`` is negative.
* ``page`` or ``per_page`` are not ints.
When ``error_out`` is ``False``, ``page`` and ``per_page`` default to
1 and 20 respectively.
Returns a :class:`Pagination` object.
"""
if request:
if page is None:
try:
page = int(request.args.get('page', 1))
except (TypeError, ValueError):
if error_out:
abort(404)
page = 1
if per_page is None:
try:
per_page = int(request.args.get('per_page', 20))
except (TypeError, ValueError):
if error_out:
abort(404)
per_page = 20
else:
if page is None:
page = 1
if per_page is None:
per_page = 20
if max_per_page is not None:
per_page = min(per_page, max_per_page)
if page < 1:
if error_out:
abort(404)
else:
page = 1
if per_page < 0:
if error_out:
abort(404)
else:
per_page = 20
items = self.limit(per_page).offset((page - 1) * per_page).all()
if not items and page != 1 and error_out:
abort(404)
total = self.order_by(None).count()
return Pagination(self, page, per_page, total, items)
class _QueryProperty(object):
def __init__(self, sa):
self.sa = sa
def __get__(self, obj, type):
try:
mapper = orm.class_mapper(type)
if mapper:
return type.query_class(mapper, session=self.sa.session())
except UnmappedClassError:
return None
def _record_queries(app):
if app.debug:
return True
rq = app.config['SQLALCHEMY_RECORD_QUERIES']
if rq is not None:
return rq
return bool(app.config.get('TESTING'))
class _EngineConnector(object):
def __init__(self, sa, app, bind=None):
self._sa = sa
self._app = app
self._engine = None
self._connected_for = None
self._bind = bind
self._lock = Lock()
def get_uri(self):
if self._bind is None:
return self._app.config['SQLALCHEMY_DATABASE_URI']
binds = self._app.config.get('SQLALCHEMY_BINDS') or ()
assert self._bind in binds, \
'Bind %r is not specified. Set it in the SQLALCHEMY_BINDS ' \
'configuration variable' % self._bind
return binds[self._bind]
def get_engine(self):
with self._lock:
uri = self.get_uri()
echo = self._app.config['SQLALCHEMY_ECHO']
if (uri, echo) == self._connected_for:
return self._engine
sa_url = make_url(uri)
options = self.get_options(sa_url, echo)
self._engine = rv = self._sa.create_engine(sa_url, options)
if _record_queries(self._app):
_EngineDebuggingSignalEvents(self._engine,
self._app.import_name).register()
self._connected_for = (uri, echo)
return rv
def get_options(self, sa_url, echo):
options = {}
self._sa.apply_pool_defaults(self._app, options)
self._sa.apply_driver_hacks(self._app, sa_url, options)
if echo:
options['echo'] = echo
# Give the config options set by a developer explicitly priority
# over decisions FSA makes.
options.update(self._app.config['SQLALCHEMY_ENGINE_OPTIONS'])
# Give options set in SQLAlchemy.__init__() ultimate priority
options.update(self._sa._engine_options)
return options
def get_state(app):
"""Gets the state for the application"""
assert 'sqlalchemy' in app.extensions, \
'The sqlalchemy extension was not registered to the current ' \
'application. Please make sure to call init_app() first.'
return app.extensions['sqlalchemy']
class _SQLAlchemyState(object):
"""Remembers configuration for the (db, app) tuple."""
def __init__(self, db):
self.db = db
self.connectors = {}
class SQLAlchemy(object):
"""This class is used to control the SQLAlchemy integration to one
or more Flask applications. Depending on how you initialize the
object it is usable right away or will attach as needed to a
Flask application.
There are two usage modes which work very similarly. One is binding
the instance to a very specific Flask application::
app = Flask(__name__)
db = SQLAlchemy(app)
The second possibility is to create the object once and configure the
application later to support it::
db = SQLAlchemy()
def create_app():
app = Flask(__name__)
db.init_app(app)
return app
The difference between the two is that in the first case methods like
:meth:`create_all` and :meth:`drop_all` will work all the time but in
the second case a :meth:`flask.Flask.app_context` has to exist.
By default Flask-SQLAlchemy will apply some backend-specific settings
to improve your experience with them.
As of SQLAlchemy 0.6 SQLAlchemy
will probe the library for native unicode support. If it detects
unicode it will let the library handle that, otherwise do that itself.
Sometimes this detection can fail in which case you might want to set
``use_native_unicode`` (or the ``SQLALCHEMY_NATIVE_UNICODE`` configuration
key) to ``False``. Note that the configuration key overrides the
value you pass to the constructor. Direct support for ``use_native_unicode``
and SQLALCHEMY_NATIVE_UNICODE are deprecated as of v2.4 and will be removed
in v3.0. ``engine_options`` and ``SQLALCHEMY_ENGINE_OPTIONS`` may be used
instead.
This class also provides access to all the SQLAlchemy functions and classes
from the :mod:`sqlalchemy` and :mod:`sqlalchemy.orm` modules. So you can
declare models like this::
class User(db.Model):
username = db.Column(db.String(80), unique=True)
pw_hash = db.Column(db.String(80))
You can still use :mod:`sqlalchemy` and :mod:`sqlalchemy.orm` directly, but
note that Flask-SQLAlchemy customizations are available only through an
instance of this :class:`SQLAlchemy` class. Query classes default to
:class:`BaseQuery` for `db.Query`, `db.Model.query_class`, and the default
query_class for `db.relationship` and `db.backref`. If you use these
interfaces through :mod:`sqlalchemy` and :mod:`sqlalchemy.orm` directly,
the default query class will be that of :mod:`sqlalchemy`.
.. admonition:: Check types carefully
Don't perform type or `isinstance` checks against `db.Table`, which
emulates `Table` behavior but is not a class. `db.Table` exposes the
`Table` interface, but is a function which allows omission of metadata.
The ``session_options`` parameter, if provided, is a dict of parameters
to be passed to the session constructor. See :class:`~sqlalchemy.orm.session.Session`
for the standard options.
The ``engine_options`` parameter, if provided, is a dict of parameters
to be passed to create engine. See :func:`~sqlalchemy.create_engine`
for the standard options. The values given here will be merged with and
override anything set in the ``'SQLALCHEMY_ENGINE_OPTIONS'`` config
variable or othewise set by this library.
.. versionadded:: 0.10
The `session_options` parameter was added.
.. versionadded:: 0.16
`scopefunc` is now accepted on `session_options`. It allows specifying
a custom function which will define the SQLAlchemy session's scoping.
.. versionadded:: 2.1
The `metadata` parameter was added. This allows for setting custom
naming conventions among other, non-trivial things.
The `query_class` parameter was added, to allow customisation
of the query class, in place of the default of :class:`BaseQuery`.
The `model_class` parameter was added, which allows a custom model
class to be used in place of :class:`Model`.
.. versionchanged:: 2.1
Utilise the same query class across `session`, `Model.query` and `Query`.
.. versionadded:: 2.4
The `engine_options` parameter was added.
.. versionchanged:: 2.4
The `use_native_unicode` parameter was deprecated.
.. versionchanged:: 2.4.3
``COMMIT_ON_TEARDOWN`` is deprecated and will be removed in
version 3.1. Call ``db.session.commit()`` directly instead.
"""
#: Default query class used by :attr:`Model.query` and other queries.
#: Customize this by passing ``query_class`` to :func:`SQLAlchemy`.
#: Defaults to :class:`BaseQuery`.
Query = None
def __init__(self, app=None, use_native_unicode=True, session_options=None,
metadata=None, query_class=BaseQuery, model_class=Model,
engine_options=None):
self.use_native_unicode = use_native_unicode
self.Query = query_class
self.session = self.create_scoped_session(session_options)
self.Model = self.make_declarative_base(model_class, metadata)
self._engine_lock = Lock()
self.app = app
self._engine_options = engine_options or {}
_include_sqlalchemy(self, query_class)
if app is not None:
self.init_app(app)
@property
def metadata(self):
"""The metadata associated with ``db.Model``."""
return self.Model.metadata
def create_scoped_session(self, options=None):
"""Create a :class:`~sqlalchemy.orm.scoping.scoped_session`
on the factory from :meth:`create_session`.
An extra key ``'scopefunc'`` can be set on the ``options`` dict to
specify a custom scope function. If it's not provided, Flask's app
context stack identity is used. This will ensure that sessions are
created and removed with the request/response cycle, and should be fine
in most cases.
:param options: dict of keyword arguments passed to session class in
``create_session``
"""
if options is None:
options = {}
scopefunc = options.pop('scopefunc', _app_ctx_stack.__ident_func__)
options.setdefault('query_cls', self.Query)
return orm.scoped_session(
self.create_session(options), scopefunc=scopefunc
)
def create_session(self, options):
"""Create the session factory used by :meth:`create_scoped_session`.
The factory **must** return an object that SQLAlchemy recognizes as a session,
or registering session events may raise an exception.
Valid factories include a :class:`~sqlalchemy.orm.session.Session`
class or a :class:`~sqlalchemy.orm.session.sessionmaker`.
The default implementation creates a ``sessionmaker`` for :class:`SignallingSession`.
:param options: dict of keyword arguments passed to session class
"""
return orm.sessionmaker(class_=SignallingSession, db=self, **options)
def make_declarative_base(self, model, metadata=None):
"""Creates the declarative base that all models will inherit from.
:param model: base model class (or a tuple of base classes) to pass
to :func:`~sqlalchemy.ext.declarative.declarative_base`. Or a class
returned from ``declarative_base``, in which case a new base class
is not created.
:param metadata: :class:`~sqlalchemy.MetaData` instance to use, or
none to use SQLAlchemy's default.
.. versionchanged 2.3.0::
``model`` can be an existing declarative base in order to support
complex customization such as changing the metaclass.
"""
if not isinstance(model, DeclarativeMeta):
model = declarative_base(
cls=model,
name='Model',
metadata=metadata,
metaclass=DefaultMeta
)
# if user passed in a declarative base and a metaclass for some reason,
# make sure the base uses the metaclass
if metadata is not None and model.metadata is not metadata:
model.metadata = metadata
if not getattr(model, 'query_class', None):
model.query_class = self.Query
model.query = _QueryProperty(self)
return model
def init_app(self, app):
"""This callback can be used to initialize an application for the
use with this database setup. Never use a database in the context
of an application not initialized that way or connections will
leak.
"""
if (
'SQLALCHEMY_DATABASE_URI' not in app.config and
'SQLALCHEMY_BINDS' not in app.config
):
warnings.warn(
'Neither SQLALCHEMY_DATABASE_URI nor SQLALCHEMY_BINDS is set. '
'Defaulting SQLALCHEMY_DATABASE_URI to "sqlite:///:memory:".'
)
app.config.setdefault('SQLALCHEMY_DATABASE_URI', 'sqlite:///:memory:')
app.config.setdefault('SQLALCHEMY_BINDS', None)
app.config.setdefault('SQLALCHEMY_NATIVE_UNICODE', None)
app.config.setdefault('SQLALCHEMY_ECHO', False)
app.config.setdefault('SQLALCHEMY_RECORD_QUERIES', None)
app.config.setdefault('SQLALCHEMY_POOL_SIZE', None)
app.config.setdefault('SQLALCHEMY_POOL_TIMEOUT', None)
app.config.setdefault('SQLALCHEMY_POOL_RECYCLE', None)
app.config.setdefault('SQLALCHEMY_MAX_OVERFLOW', None)
app.config.setdefault('SQLALCHEMY_COMMIT_ON_TEARDOWN', False)
track_modifications = app.config.setdefault(
'SQLALCHEMY_TRACK_MODIFICATIONS', None
)
app.config.setdefault('SQLALCHEMY_ENGINE_OPTIONS', {})
if track_modifications is None:
warnings.warn(FSADeprecationWarning(
'SQLALCHEMY_TRACK_MODIFICATIONS adds significant overhead and '
'will be disabled by default in the future. Set it to True '
'or False to suppress this warning.'
))
# Deprecation warnings for config keys that should be replaced by SQLALCHEMY_ENGINE_OPTIONS.
utils.engine_config_warning(app.config, '3.0', 'SQLALCHEMY_POOL_SIZE', 'pool_size')
utils.engine_config_warning(app.config, '3.0', 'SQLALCHEMY_POOL_TIMEOUT', 'pool_timeout')
utils.engine_config_warning(app.config, '3.0', 'SQLALCHEMY_POOL_RECYCLE', 'pool_recycle')
utils.engine_config_warning(app.config, '3.0', 'SQLALCHEMY_MAX_OVERFLOW', 'max_overflow')
app.extensions['sqlalchemy'] = _SQLAlchemyState(self)
@app.teardown_appcontext
def shutdown_session(response_or_exc):
if app.config['SQLALCHEMY_COMMIT_ON_TEARDOWN']:
warnings.warn(
"'COMMIT_ON_TEARDOWN' is deprecated and will be"
" removed in version 3.1. Call"
" 'db.session.commit()'` directly instead.",
DeprecationWarning,
)
if response_or_exc is None:
self.session.commit()
self.session.remove()
return response_or_exc
def apply_pool_defaults(self, app, options):
def _setdefault(optionkey, configkey):
value = app.config[configkey]
if value is not None:
options[optionkey] = value
_setdefault('pool_size', 'SQLALCHEMY_POOL_SIZE')
_setdefault('pool_timeout', 'SQLALCHEMY_POOL_TIMEOUT')
_setdefault('pool_recycle', 'SQLALCHEMY_POOL_RECYCLE')
_setdefault('max_overflow', 'SQLALCHEMY_MAX_OVERFLOW')
def apply_driver_hacks(self, app, sa_url, options):
"""This method is called before engine creation and used to inject
driver specific hacks into the options. The `options` parameter is
a dictionary of keyword arguments that will then be used to call
the :func:`sqlalchemy.create_engine` function.
The default implementation provides some saner defaults for things
like pool sizes for MySQL and sqlite. Also it injects the setting of
`SQLALCHEMY_NATIVE_UNICODE`.
"""
if sa_url.drivername.startswith('mysql'):
sa_url.query.setdefault('charset', 'utf8')
if sa_url.drivername != 'mysql+gaerdbms':
options.setdefault('pool_size', 10)
options.setdefault('pool_recycle', 7200)
elif sa_url.drivername == 'sqlite':
pool_size = options.get('pool_size')
detected_in_memory = False
if sa_url.database in (None, '', ':memory:'):
detected_in_memory = True
from sqlalchemy.pool import StaticPool
options['poolclass'] = StaticPool
if 'connect_args' not in options:
options['connect_args'] = {}
options['connect_args']['check_same_thread'] = False
# we go to memory and the pool size was explicitly set
# to 0 which is fail. Let the user know that
if pool_size == 0:
raise RuntimeError('SQLite in memory database with an '
'empty queue not possible due to data '
'loss.')
# if pool size is None or explicitly set to 0 we assume the
# user did not want a queue for this sqlite connection and
# hook in the null pool.
elif not pool_size:
from sqlalchemy.pool import NullPool
options['poolclass'] = NullPool
# if it's not an in memory database we make the path absolute.
if not detected_in_memory:
sa_url.database = os.path.join(app.root_path, sa_url.database)
unu = app.config['SQLALCHEMY_NATIVE_UNICODE']
if unu is None:
unu = self.use_native_unicode
if not unu:
options['use_native_unicode'] = False
if app.config['SQLALCHEMY_NATIVE_UNICODE'] is not None:
warnings.warn(
"The 'SQLALCHEMY_NATIVE_UNICODE' config option is deprecated and will be removed in"
" v3.0. Use 'SQLALCHEMY_ENGINE_OPTIONS' instead.",
DeprecationWarning
)
if not self.use_native_unicode:
warnings.warn(
"'use_native_unicode' is deprecated and will be removed in v3.0."
" Use the 'engine_options' parameter instead.",
DeprecationWarning
)
@property
def engine(self):
"""Gives access to the engine. If the database configuration is bound
to a specific application (initialized with an application) this will
always return a database connection. If however the current application
is used this might raise a :exc:`RuntimeError` if no application is
active at the moment.
"""
return self.get_engine()
def make_connector(self, app=None, bind=None):
"""Creates the connector for a given state and bind."""
return _EngineConnector(self, self.get_app(app), bind)
def get_engine(self, app=None, bind=None):
"""Returns a specific engine."""
app = self.get_app(app)
state = get_state(app)
with self._engine_lock:
connector = state.connectors.get(bind)
if connector is None:
connector = self.make_connector(app, bind)
state.connectors[bind] = connector
return connector.get_engine()
def create_engine(self, sa_url, engine_opts):
"""
Override this method to have final say over how the SQLAlchemy engine
is created.
In most cases, you will want to use ``'SQLALCHEMY_ENGINE_OPTIONS'``
config variable or set ``engine_options`` for :func:`SQLAlchemy`.
"""
return sqlalchemy.create_engine(sa_url, **engine_opts)
def get_app(self, reference_app=None):
"""Helper method that implements the logic to look up an
application."""
if reference_app is not None:
return reference_app
if current_app:
return current_app._get_current_object()
if self.app is not None:
return self.app
raise RuntimeError(
'No application found. Either work inside a view function or push'
' an application context. See'
' http://flask-sqlalchemy.pocoo.org/contexts/.'
)
def get_tables_for_bind(self, bind=None):
"""Returns a list of all tables relevant for a bind."""
result = []
for table in itervalues(self.Model.metadata.tables):
if table.info.get('bind_key') == bind:
result.append(table)
return result
def get_binds(self, app=None):
"""Returns a dictionary with a table->engine mapping.
This is suitable for use of sessionmaker(binds=db.get_binds(app)).
"""
app = self.get_app(app)
binds = [None] + list(app.config.get('SQLALCHEMY_BINDS') or ())
retval = {}
for bind in binds:
engine = self.get_engine(app, bind)
tables = self.get_tables_for_bind(bind)
retval.update(dict((table, engine) for table in tables))
return retval
def _execute_for_all_tables(self, app, bind, operation, skip_tables=False):
app = self.get_app(app)
if bind == '__all__':
binds = [None] + list(app.config.get('SQLALCHEMY_BINDS') or ())
elif isinstance(bind, string_types) or bind is None:
binds = [bind]
else:
binds = bind
for bind in binds:
extra = {}
if not skip_tables:
tables = self.get_tables_for_bind(bind)
extra['tables'] = tables
op = getattr(self.Model.metadata, operation)
op(bind=self.get_engine(app, bind), **extra)
def create_all(self, bind='__all__', app=None):
"""Creates all tables.
.. versionchanged:: 0.12
Parameters were added
"""
self._execute_for_all_tables(app, bind, 'create_all')
def drop_all(self, bind='__all__', app=None):
"""Drops all tables.
.. versionchanged:: 0.12
Parameters were added
"""
self._execute_for_all_tables(app, bind, 'drop_all')
def reflect(self, bind='__all__', app=None):
"""Reflects tables from the database.
.. versionchanged:: 0.12
Parameters were added
"""
self._execute_for_all_tables(app, bind, 'reflect', skip_tables=True)
def __repr__(self):
return '<%s engine=%r>' % (
self.__class__.__name__,
self.engine.url if self.app or current_app else None
)
class _BoundDeclarativeMeta(DefaultMeta):
def __init__(cls, name, bases, d):
warnings.warn(FSADeprecationWarning(
'"_BoundDeclarativeMeta" has been renamed to "DefaultMeta". The'
' old name will be removed in 3.0.'
), stacklevel=3)
super(_BoundDeclarativeMeta, cls).__init__(name, bases, d)
class FSADeprecationWarning(DeprecationWarning):
pass
warnings.simplefilter('always', FSADeprecationWarning)
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/flask_sqlalchemy/model.py
|
import re
import sqlalchemy as sa
from sqlalchemy import inspect
from sqlalchemy.ext.declarative import DeclarativeMeta, declared_attr
from sqlalchemy.schema import _get_table_key
from ._compat import to_str
def should_set_tablename(cls):
"""Determine whether ``__tablename__`` should be automatically generated
for a model.
* If no class in the MRO sets a name, one should be generated.
* If a declared attr is found, it should be used instead.
* If a name is found, it should be used if the class is a mixin, otherwise
one should be generated.
* Abstract models should not have one generated.
Later, :meth:`._BoundDeclarativeMeta.__table_cls__` will determine if the
model looks like single or joined-table inheritance. If no primary key is
found, the name will be unset.
"""
if (
cls.__dict__.get('__abstract__', False)
or not any(isinstance(b, DeclarativeMeta) for b in cls.__mro__[1:])
):
return False
for base in cls.__mro__:
if '__tablename__' not in base.__dict__:
continue
if isinstance(base.__dict__['__tablename__'], declared_attr):
return False
return not (
base is cls
or base.__dict__.get('__abstract__', False)
or not isinstance(base, DeclarativeMeta)
)
return True
camelcase_re = re.compile(r'([A-Z]+)(?=[a-z0-9])')
def camel_to_snake_case(name):
def _join(match):
word = match.group()
if len(word) > 1:
return ('_%s_%s' % (word[:-1], word[-1])).lower()
return '_' + word.lower()
return camelcase_re.sub(_join, name).lstrip('_')
class NameMetaMixin(object):
def __init__(cls, name, bases, d):
if should_set_tablename(cls):
cls.__tablename__ = camel_to_snake_case(cls.__name__)
super(NameMetaMixin, cls).__init__(name, bases, d)
# __table_cls__ has run at this point
# if no table was created, use the parent table
if (
'__tablename__' not in cls.__dict__
and '__table__' in cls.__dict__
and cls.__dict__['__table__'] is None
):
del cls.__table__
def __table_cls__(cls, *args, **kwargs):
"""This is called by SQLAlchemy during mapper setup. It determines the
final table object that the model will use.
If no primary key is found, that indicates single-table inheritance,
so no table will be created and ``__tablename__`` will be unset.
"""
# check if a table with this name already exists
# allows reflected tables to be applied to model by name
key = _get_table_key(args[0], kwargs.get('schema'))
if key in cls.metadata.tables:
return sa.Table(*args, **kwargs)
# if a primary key or constraint is found, create a table for
# joined-table inheritance
for arg in args:
if (
(isinstance(arg, sa.Column) and arg.primary_key)
or isinstance(arg, sa.PrimaryKeyConstraint)
):
return sa.Table(*args, **kwargs)
# if no base classes define a table, return one
# ensures the correct error shows up when missing a primary key
for base in cls.__mro__[1:-1]:
if '__table__' in base.__dict__:
break
else:
return sa.Table(*args, **kwargs)
# single-table inheritance, use the parent tablename
if '__tablename__' in cls.__dict__:
del cls.__tablename__
class BindMetaMixin(object):
def __init__(cls, name, bases, d):
bind_key = (
d.pop('__bind_key__', None)
or getattr(cls, '__bind_key__', None)
)
super(BindMetaMixin, cls).__init__(name, bases, d)
if bind_key is not None and getattr(cls, '__table__', None) is not None:
cls.__table__.info['bind_key'] = bind_key
class DefaultMeta(NameMetaMixin, BindMetaMixin, DeclarativeMeta):
pass
class Model(object):
"""Base class for SQLAlchemy declarative base model.
To define models, subclass :attr:`db.Model <SQLAlchemy.Model>`, not this
class. To customize ``db.Model``, subclass this and pass it as
``model_class`` to :class:`SQLAlchemy`.
"""
#: Query class used by :attr:`query`. Defaults to
# :class:`SQLAlchemy.Query`, which defaults to :class:`BaseQuery`.
query_class = None
#: Convenience property to query the database for instances of this model
# using the current session. Equivalent to ``db.session.query(Model)``
# unless :attr:`query_class` has been changed.
query = None
def __repr__(self):
identity = inspect(self).identity
if identity is None:
pk = "(transient {0})".format(id(self))
else:
pk = ', '.join(to_str(value) for value in identity)
return '<{0} {1}>'.format(type(self).__name__, pk)
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/flask_sqlalchemy/utils.py
|
import warnings
import sqlalchemy
def parse_version(v):
"""
Take a string version and conver it to a tuple (for easier comparison), e.g.:
"1.2.3" --> (1, 2, 3)
"1.2" --> (1, 2, 0)
"1" --> (1, 0, 0)
"""
parts = v.split(".")
# Pad the list to make sure there is three elements so that we get major, minor, point
# comparisons that default to "0" if not given. I.e. "1.2" --> (1, 2, 0)
parts = (parts + 3 * ['0'])[:3]
return tuple(int(x) for x in parts)
def sqlalchemy_version(op, val):
sa_ver = parse_version(sqlalchemy.__version__)
target_ver = parse_version(val)
assert op in ('<', '>', '<=', '>=', '=='), 'op {} not supported'.format(op)
if op == '<':
return sa_ver < target_ver
if op == '>':
return sa_ver > target_ver
if op == '<=':
return sa_ver <= target_ver
if op == '>=':
return sa_ver >= target_ver
return sa_ver == target_ver
def engine_config_warning(config, version, deprecated_config_key, engine_option):
if config[deprecated_config_key] is not None:
warnings.warn(
'The `{}` config option is deprecated and will be removed in'
' v{}. Use `SQLALCHEMY_ENGINE_OPTIONS[\'{}\']` instead.'
.format(deprecated_config_key, version, engine_option),
DeprecationWarning
)
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/flask_sqlalchemy/_compat.py
|
import sys
PY2 = sys.version_info[0] == 2
if PY2:
def iteritems(d):
return d.iteritems()
def itervalues(d):
return d.itervalues()
xrange = xrange
string_types = (unicode, bytes)
def to_str(x, charset='utf8', errors='strict'):
if x is None or isinstance(x, str):
return x
if isinstance(x, unicode):
return x.encode(charset, errors)
return str(x)
else:
def iteritems(d):
return iter(d.items())
def itervalues(d):
return iter(d.values())
xrange = range
string_types = (str,)
def to_str(x, charset='utf8', errors='strict'):
if x is None or isinstance(x, str):
return x
if isinstance(x, bytes):
return x.decode(charset, errors)
return str(x)
| 0 |
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages
|
qxf2_public_repos/what-is-confusing-backend/venv/Lib/site-packages/pip-20.2.3.dist-info/RECORD
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