Question

I would like to have this info during run-time or in ipython. For example,

import matplotlib

How do I know which matplotlib.py is used if I have multiple versions or I just want to know where the file located.

Thanks

Answer 1

Inspect the module’s __file__ attribute.

In [1]: import matplotlib

In [2]: matplotlib.__file__
Out[2]: '/usr/lib/pymodules/python2.7/matplotlib/__init__.pyc'

(Works in vanilla Python too.)