From VS Code 1.46 update:

https://code.visualstudio.com/updates/v1_46#_automatic-debug-configurations-improvements

Automatic debug configurations improvements

Last milestone, we introduced a feature so that extension authors can analyze the current project and offer debug configurations automatically. These debug configurations are dynamically created and so they do not show up in the launch.json configuration file. This is nice as long as they work out of the box, but sometimes you may need to modify the configuration, for instance to add an additional argument. There is now an option to save an automatic debug configuration into a launch.json, in order to open it up for editing.

We should do it for Django, Flask and FastAPI projects to start 😊