Troubleshooting Python debugging on a Unknown Source

[TheRobBrennan]

Hi there! Thank you for creating this project. I am using it as a starting point to explore learning and debugging Python in VS Code.

One issue I've encountered is that I cannot get it to properly debug in the VS Code IDE. If I stick with the strict ptvsd == 3.0.0, I can get it to partially debug. It will pause on the breakpoints, but nothing will be highlighted in the IDE (a la a typical debugging experience with VS Code) and it will say that the source file is an "Unknown Source"

If you're interested, I'd love to know if you have any possible solution to that. And if you're not, that's fine too - I know open source examples can be a labor of love 😀

I've created a branch that reproduces this in a slightly modified version of your example - using docker-compose to load the Dockerfile, etc at https://github.com/TheRobBrennan/demo-python-docker-vscode-debug/tree/troubleshooting-vscode-debugger

Here is what I'm seeing while running the latest version of VS Code:

[dhensen]

I get the same unknown source when trying out the remote-debugging-docker-django folder.

Before trying this out I added ptvsd to a django project that I'm working on. The problem over there is that I wanted to be able to place breakpoints on code in virtualenv (for example in django sources), but locally my sources are not at the same paths as inside docker container. I get unverified breakpoints and it never hits a breakpoint. That's why I came here to try this one out and see if this offers more, but it does not work. Any ideas?

[dhensen]

Ok I found it. The remoteRoot needs to be absolute. So instead of: "remoteRoot": "src/", I now have "remoteRoot": "/src/", and that made it work.

(if anybody comes here for more.. this is what I'm looking for: a setup where I can debug remotely running my django app inside docker, where I can also put breakpoints on code in a virtualenv. I'm going to try to put the venv inside my repo and maybe symlink some stuff or add to python path to see if I get it working)