Answers for "turn on debug mode flask"

run flask in debug mode

export FLASK_APP="mainfilename.py"
export FLASK_DEBUG=1
python -m flask run --host=0.0.0.0

debug mode: on flask pythin window

For Windows users

The page and resource that was selected as the answer in this post led to a broken page. However, try the code below.

Set debug mode using

	$env:FLASK_ENV = "development"
    
Run app

	flask run

[This post solved it for me][1]


  [1]: https://stackoverflow.com/a/65899307/11737951

Or 

Set it directly from the app in your code.

    if __name__ == '__main__':
        app.debug = True
        app.run(host='0.0.0.0', port=3000)

run flask in debug mode

export FLASK_ENV=development

# To launch the app (Needed only once)
flask run