I\'ve searched and this seems to be a simple question without a simple answer.
I have the file a/b/c.py which would be called with python -m a.b.c
a/b/c.py
python -m a.b.c
you should hardcode a.b.c in your help, if you distribute the package as such then that's the way to call it regardless of where a is located in the filesystem, as long as it's on the PYTHONPATH it'll be imported.
a.b.c
a