Finding the name of an object's source file

[Gregory Ewing]

Matt Wheeler wrote:
>>>>import importlib, os
>>>>importlib.import_module(os.path.split.__module__).__file__
> 
> '/Users/matt/.pyenv/versions/3.6.0/lib/python3.6/posixpath.py'

Or just look the module name up in sys.modules, if we know (as
we do here) that the module has already been imported.

-- 
Greg