/usr/lib/ is in python-z3c.ptcompat 1.0.1-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/
/usr/lib/python2.7/dist-packages/
/usr/lib/python2.7/dist-packages/z3c.ptcompat-1.0.1.egg-info/
/usr/lib/python2.7/dist-packages/z3c/
/usr/lib/python2.7/dist-packages/z3c/ptcompat/
/usr/lib/python2.7/dist-packages/z3c.ptcompat-1.0.1.egg-info/top_level.txt
/usr/lib/python2.7/dist-packages/z3c.ptcompat-1.0.1.egg-info/not-zip-safe
/usr/lib/python2.7/dist-packages/z3c.ptcompat-1.0.1.egg-info/dependency_links.txt
/usr/lib/python2.7/dist-packages/z3c.ptcompat-1.0.1.egg-info/requires.txt
/usr/lib/python2.7/dist-packages/z3c.ptcompat-1.0.1.egg-info/namespace_packages.txt
/usr/lib/python2.7/dist-packages/z3c.ptcompat-1.0.1.egg-info/PKG-INFO
/usr/lib/python2.7/dist-packages/z3c.ptcompat-1.0.1.egg-info/SOURCES.txt
/usr/lib/python2.7/dist-packages/z3c/ptcompat/configure.zcml
/usr/lib/python2.7/dist-packages/z3c/ptcompat/tests.py
/usr/lib/python2.7/dist-packages/z3c/ptcompat/__init__.py
/usr/lib/python2.7/dist-packages/z3c/ptcompat/engine.py
/usr/lib/python2.7/dist-packages/z3c.ptcompat-1.0.1-nspkg.pth