flask and tkinter for a dialog box (yes/no - start/stop server)

[Xavlight]

Hi,

I would like to create a dialog box (tkinter) with an on/off button.
When the program starts, it starts the Flask server directly.
And with the button, you can stop or restart it.

But as soon as I run app.run, the dialog box does not work anymore.
I used parameter 'threaded=True', but not effect.
I tried with multithreading 'threading.Thread' to start flask and tkinter, it works. But in this case I can't stop the flask server on button click off.

Can anyone give me a hint?

Thanks

Environment:

Python version: 3.9.6
Flask version: 2.0.1
Tkinter : 8.6

[miguelgrinberg]

The Flask server is blocking, so you must start it on a background thread if you want your UI to remain operational.

To shutdown the server you have to send a request to it that calls the Werkzeug shutdown function. See the documentation to learn how to do this.

[Yourun-proger]

Also, on StackOverflow suggest using the following:

from flask import request
def shutdown_server():
    func = request.environ.get('werkzeug.server.shutdown')
    if func is None:
        raise RuntimeError('Not running with the Werkzeug Server')
    func()

And in your GUI you can add something like this:

btn = tk.Button(main_window, text='stop flask server', command=shutdown_server)

[ThiefMaster]

That's deprecated: pallets/werkzeug#1873

[Yourun-proger]

Sorry for bad answer. I didn't know this