/usr/ is in python-authres 0.401-1.
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/authres/
/usr/share/
/usr/share/doc/
/usr/share/doc/python-authres/
/usr/share/doc/python-authres/README
/usr/lib/
/usr/share/doc/python-authres/copyright
/usr/share/doc/python-authres/changelog.Debian.gz
/usr/share/pyshared/
/usr/share/pyshared/authres/
/usr/share/pyshared/authres/dkim_b.py
/usr/share/pyshared/authres/__init__.py
/usr/share/pyshared/authres/vbr.py
/usr/share/pyshared/authres/core.py
/usr/share/pyshared/authres/dkim_adsp.py
/usr/share/pyshared/authres-0.401.egg-info
/usr/lib/python2.7/dist-packages/authres/dkim_b.py
/usr/lib/python2.7/dist-packages/authres/__init__.py
/usr/lib/python2.7/dist-packages/authres/vbr.py
/usr/lib/python2.7/dist-packages/authres/core.py
/usr/lib/python2.7/dist-packages/authres/dkim_adsp.py
/usr/lib/python2.7/dist-packages/authres-0.401.egg-info