/usr/lib/ is in python-debian 0.1.27ubuntu2.
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/debian/
/usr/lib/python2.7/dist-packages/debian/debfile.py
/usr/lib/python2.7/dist-packages/debian/copyright.py
/usr/lib/python2.7/dist-packages/debian/deb822.py
/usr/lib/python2.7/dist-packages/debian/debian_support.py
/usr/lib/python2.7/dist-packages/debian/changelog.py
/usr/lib/python2.7/dist-packages/debian/debtags.py
/usr/lib/python2.7/dist-packages/debian/arfile.py
/usr/lib/python2.7/dist-packages/debian/__init__.py
/usr/lib/python2.7/dist-packages/debian/deprecation.py
/usr/lib/python2.7/dist-packages/debian_bundle/
/usr/lib/python2.7/dist-packages/debian_bundle/__init__.py
/usr/lib/python2.7/dist-packages/deb822.py
/usr/lib/python2.7/dist-packages/python_debian-0.1.27.egg-info/
/usr/lib/python2.7/dist-packages/python_debian-0.1.27.egg-info/top_level.txt
/usr/lib/python2.7/dist-packages/python_debian-0.1.27.egg-info/PKG-INFO
/usr/lib/python2.7/dist-packages/python_debian-0.1.27.egg-info/requires.txt
/usr/lib/python2.7/dist-packages/python_debian-0.1.27.egg-info/dependency_links.txt