pip installation failed during env. confirmation because python command not found

As reported by Chris Wood in VSCode Marketplace:

I had some problems using this with flask. When installing the app agent it said I needed a requirements file which was easy enough to supply from pip. But after that I got the following...

Project type: pip
Project directory: /var/partapi
Python version: python failed with code Error: An error occurred while running the command: python --version
> python --version was not found. Verify the .... and try again.

Which I guessed just needs a symlink on my end from python to python3, but at this point i kind of lost interest to be honest. I am sure it is a great app I just wanted to point out my experience to maybe help streamline things.

Start by tracing the environment confirmation path for pip projects and the entry point that runs python --version; reproduce the failure in an environment where only python3 is available. Done means the confirmation handles this common command mismatch or reports a clear, actionable error, with a regression test if the existing test structure supports it.