/usr/lib/python2.7/dist-packages/wsgi_intercept/test/test_mechanize.py is in python-wsgi-intercept 0.4-0ubuntu3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/wsgi_intercept/test/../../../../../share/pyshared/wsgi_intercept/test/test_mechanize.py