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Bookmark or Share- Auto reloading python Flask app upon code changesPrior to Flask 2.2, you needed to set the FLASK_APP and FLASK_ENV=development environment variables. $ export FLASK_APP=main.py $ export FLASK_ENV=development $ flask run It is still possible to set FLASK_APP and FLASK_DEBUG=1 in Flask 2.2.
- Configure Flask dev server to be visible across the networkFLASK_APP=app.py FLASK_ENV=development FLASK_RUN_HOST=[dev-host-ip] FLASK_RUN_PORT=5000 If you have a virtual environment, activate it and do a pip install python-dotenv. This package is going to use the .flaskenv file, and declarations inside it will be automatically imported across terminal sessions. Then you can do flask run
- python - How to debug a Flask app - Stack OverflowPrior to Flask 2.2, this was controlled by the FLASK_ENV=development environment variable instead. You can still use FLASK_APP and FLASK_DEBUG=1 instead of the options above. For Linux, Mac, Linux Subsystem for Windows, Git Bash on Windows, etc.: $ export FLASK_APP=example $ export FLASK_DEBUG=1 $ flask run For Windows CMD, use set instead of ...
- Get the data received in a Flask request - Stack Overflowfrom flask import request @app.route('/', methods=['GET', 'POST']) def parse_request(): data = request.data # data is empty # need posted data here The answer to this question led me to ask Get raw POST body in Python Flask regardless of Content-Type header next, which is about getting the raw data rather than the parsed data.
- Solve Cross Origin Resource Sharing with FlaskOpen the Flask Python file in the IDE. Right mouse-click on the file. Click: Run Python File in Terminal; The problem for me was running the Flask Python file with CTRL+ALT+N. The "Run Code" button in VSCode, I shouldn't have ran the Flask server that way. Because of that I assume CORS didn't load properly.
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