Flask is not running when Debug is True on Windows about flask

[davidism]

As with previous reported incidences of this, I cannot reproduce this issue with the information provided. The dev server reloader tests pass on Windows in CI. When I run a project locally it works as expected as well. It is impossible for me to identify the issue or evaluate a proposed fix if I don't have a reproducing example to test against.

> mkdir example
> cd example
> py -3.12 -m venv .venv
> .venv\Scripts\activate
> pip install flask

# example.py
from flask import Flask

app = Flask(__name__)

@app.route("/")
def index():
    return "Hello, World!"

> flask -A example run --debug
 * Serving Flask app 'example'
 * Debug mode: on
WARNING: This is a development server. Do not use it in a production deployment. Use a production WSGI server instead.
 * Runnning on http://127.0.0.1:5000
Press CTRL+C to quit
 * Restarting with stat
 * Debugger is active!
 * Debugger PIN: 123-456-789
127.0.0.1 - - [06/Mar/2024 11:44:09] "GET / HTTP/1.1" 200 -
 * Detected change in 'C:\\Users\\David\\Projects\\example\\example.py', reloading
 * Restarting with stat
 * Debugger is active!
 * Debugger PIN: 123-456-789