Python: add runnable task to run file as module

[griendt]

Python files can already be run as-is, but some scripts are (sub)modules of a package and should be run as a module (python some/script.py versus python -m some.script). This is particularly useful for scripts that live in subdirectories of a package, or use relative imports, etc.

Ideal would be to have a runnable task in the gutter upon seeing a conventional "main" function:

if __name__ == "__main__":
    ...

Example: