/usr/lib/python2.7/dist-packages/zope/app/zcmlfiles/tests.py is in python-zope.app.zcmlfiles 3.7.1-0ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/zope/app/zcmlfiles/../../../../../../share/pyshared/zope/app/zcmlfiles/tests.py