Debugging_a_Python_app_that_requires_Docker.md

❓🐳 ⚙️ How to Debug Python App in VS Code

Context: Python app needs a database and our database is setup through Docker.

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In VS Code docs,

1. Add debugpy to your requirements.txt file:

✅ Done

2. Add the following code snippet to the file that you wish to debug:

import debugpy  # noqa

debugpy.listen(("0.0.0.0", 5678))
debugpy.wait_for_client()

✅ I added the code at the end of main.py ⚠️ We have to also specify the host debugpy.listen(("0.0.0.0", 5678))

❓ What is the difference between 0.0.0.0 (the "host" that we need to specify to make it work) and 127.0.0.1 (the default)?

Read networking - What's the difference between 127.0.0.1 and 0.0.0.0? - Super User

Add a Python: Remote Attach configuration to launch.json in the .vscode folder: ...

✅ Done

Modify the docker-compose.yml file to expose the debugger port by adding 5678:5678 to the ports section. If you are using docker run to run your container from the terminal, you must append -p 5678:5678.

✅ I added "5678:5678" in backend's ports AND changed port setting in Traefik.