Error "Unable to find an attachable process for application" attempting to attach python app

[stuartleeks]

I got the error Unable to find an attachable process for application when attempting to attach to a running Dapr app.

The app is written in python and digging into the extension code I found this comment in the attachToPythonProcess function:

 // NOTE: I've yet to see this succeed (the adaptor can't seem to attach to the process).

Is it expected that attaching to python apps should work?

[philliphoff]

It was...hopeful..that it might work, but I was never able to get the debug adaptor to actually attach in my own testing. As my Python is pretty weak, I wasn't able to determine any reason for this.

[guybartal]

happened to me as well while trying to attach to python flask app:

Error: Unable to find an attachable process for the application 'media-indexer-api'.