带有烧瓶服务器的 Python 脚本需要很长时间才能在 Windows 上退出

Question

I'm new to Python. As a part of a project I'm trying to deploy a Flask server locally, through the Windows command line.

My Python version is 3.6.0.

The code:

from flask import Flask

app = Flask(__name__)

@app.route('/') def index():
    return '<h1>Hello World!</h1>'

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

The problem:

It's about killing the script as it runs. Launching this script with python deploy.py and hitting CTRL + C shuts it off.

BUT - if I hit access that '/' route via the browser once or more, and a moment later try to kill the script in the same manner, then it would take about 10 seconds of nothing until it responds and is finally killed.

Thanks!!

Answer 1

Well if your goal is continuous and quick development, then you can change flask's configuration.

Best solution for your problem would be setting the DEBUG setting to True . If DEBUG is set to True, then flask will automatically reload the server on code changes.

There are a few ways to do this but the easiest one(because you said you are a beginner) is to pass the debug argument to app.run()

from flask import Flask

app = Flask(__name__)

@app.route('/') 
def index():
    return '<h1>Hello World!</h1>'

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