How can I print a Python file's docstring when executing it?

Question

I have a Python script with a docstring. When the parsing of the command-line arguments does not succeed, I want to print the docstring for the user\'s information.

Answer 1

The docstring is stored in the module's __doc__ global.

print(__doc__)

By the way, this goes for any module: import sys; print(sys.__doc__). Docstrings of functions and classes are also in their __doc__ attribute.