To get flask running (use Python 3, any version should do!):
[Optional but recommendend] Create and activate virtual environment by:
Install requirements: pip (or pip3) install -r requirements.txt OR pip (pip3) install -r requirements_freezed.txt
[Optional] Activate Debug Mode by setting the environment variable:
Start the app by executing:
(vscode can do 3. and 4. automatically, and possibly the venv setup too)
To avoid annoying CORS errors, if the PC complains, serve the site through a local server, for instance http-server on node.js