How would this feature be useful?

Currently, if we want to specify the python when py launcher is not available, we have to specify the whole command name, for example, we have to use --python python3.12 rather than --python 3.12. It would be more convenient if we can check python3.12 directly when the input value is 3.12.

Describe the solution you'd like

We can use packaging.version module to parse the input value and then compose the command f"python{python_version}" if it is a valid version number.

Describe alternatives you've considered

AFAIK, there is none.

BTW, I can submit a pull request if we agree on this change.