```
$ python3
Python 3.6.9 (default, Jul 11 2019, 01:10:57)
[GCC 4.2.1 Compatible FreeBSD Clang 6.0.0 (tags/RELEASE_600/final 326565)] on freebsd11
Type "help", "copyright", "credits" or "license" for more information.
>>> import mock
>>> mock.__version__
'3.0.5'
>>> mock.__file__
'/usr/local/lib/python3.6/site-packages/mock/__init__.py'
```