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#!/usr/bin/python3
# -*- coding: utf-8 -*-
from typing import List, Union
def erode(labels: List[Union[str, int]], erode_label: Union[str, int], n: int = 1):
"""
遍历 labels 列表, 将连续的 erode_label 标签侵蚀 n 个.
"""
result = list()
in_span = False
count = 0
for idx, label in enumerate(labels):
if label == erode_label:
if not in_span:
in_span = True
count = 0
if count < n:
if len(result) == 0:
result.append(label)
else:
result.append(result[-1])
count += 1
continue
else:
result.append(label)
continue
elif label != erode_label:
if in_span:
in_span = False
for i in range(min(len(result), n)):
result[-i-1] = label
result.append(label)
continue
else:
result.append(label)
continue
result.append(label)
return result
def dilate(labels: List[Union[str, int]], dilate_label: Union[str, int], n: int = 1):
"""
遍历 labels 列表, 将连续的 dilate_label 标签扩张 n 个.
"""
result = list()
in_span = False
count = float('inf')
for idx, label in enumerate(labels):
if count < n:
result.append(dilate_label)
count += 1
continue
if label == dilate_label:
if not in_span:
in_span = True
for i in range(min(len(result), n)):
result[-i-1] = label
result.append(label)
continue
else:
result.append(label)
continue
else:
if in_span:
in_span = False
result.append(dilate_label)
count = 1
continue
else:
result.append(label)
continue
return result
def demo1():
labels = [
'voice', 'mute', 'mute', 'voice', 'voice', 'voice', 'voice', 'bell', 'bell', 'bell', 'mute', 'mute', 'mute', 'voice',
]
result = erode(
labels=labels,
erode_label='voice',
n=1,
)
print(len(labels))
print(len(result))
print(result)
return
def demo2():
labels = [
'voice', 'mute', 'mute', 'voice', 'voice', 'voice', 'voice', 'bell', 'bell', 'bell', 'mute', 'mute', 'mute', 'voice',
]
result = dilate(
labels=labels,
dilate_label='voice',
n=2,
)
print(len(labels))
print(len(result))
print(result)
return
def demo3():
import time
labels = ['mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'voice', 'bell', 'bell', 'bell', 'bell', 'bell', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'bell', 'bell', 'bell', 'bell', 'bell', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'bell', 'bell', 'bell', 'bell', 'bell', 'bell', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute', 'mute']
begin = time.time()
labels = erode(labels, erode_label='music', n=1)
labels = dilate(labels, dilate_label='music', n=1)
labels = dilate(labels, dilate_label='voice', n=2)
labels = erode(labels, erode_label='voice', n=2)
labels = erode(labels, erode_label='voice', n=1)
labels = dilate(labels, dilate_label='voice', n=3)
cost = time.time() - begin
print(cost)
print(labels)
return
if __name__ == '__main__':
# demo1()
# demo2()
demo3()
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