debugpy attach request connect with No Config debugging

[ollie-bell]

I have a launch.json configuration:

{
    "name": "Python Debugger: Attach",
    "type": "debugpy",
    "request": "attach",
    "connect": {
        "host": "localhost",
        "port": 5678
    },
    "pathMappings": [
        {
            "localRoot": "${workspaceFolder}",
            "remoteRoot": "."
        }
    ],
}

This works fine with vscode python debugging tools... but what debugpy command actually gets run when this configuration is used? Is it possible to use the new No-Config Debugging instead of this launch.json configuration?

I've tried debugpy --connect localhost:5678 but I get

Error: invalid --connect <address>: --listen and --connect are mutually exclusive

when using debugpy shipped with the vscode extension (i.e. I haven't installed debugpy manually in my venv).

For context, I am connecting to a container which has a (simplified) Dockerfile:

FROM python:3.12-slim

RUN pip install "uvicorn[standard]" fastapi
RUN pip install debugpy -t /tmp

WORKDIR /app
COPY app.py .

ENTRYPOINT exec python -X frozen_modules=off \
    /tmp/debugpy --wait-for-client --listen 0.0.0.0:5678 -m \
    uvicorn app:app --host 0.0.0.0 --port 8080

[eleanorjboyd]

Hi! To check my understanding you are looking to use the no-config debugging in your launch.json? Right now for launch.json configs the command should be printed in your logs with the full arguments.

For no-config debugging you can use it now from your terminal so in your integrated terminal running debugpy _____ should work.

And where are you trying debugpy --connect localhost:5678? In your terminal?

[github-actions]

Because we have not heard back with the information we requested, we are closing this issue for now. If you are able to provide the info later on, then we will be happy to re-open this issue to pick up where we left off.

Happy Coding!