app.py

from flask import Flask, request, render_template

app = Flask(__name__)

def greet(name, intensity):
    return "Hello, " + name + "!" * int(intensity)

@app.route("/", methods=["GET", "POST"])
def home():
    message = ""
    if request.method == "POST":
        name = request.form["name"]
        intensity = request.form["intensity"]
        message = greet(name, intensity)
    return render_template("index.html", message=message)

if __name__ == "__main__":
    app.run(debug=True)