/usr/lib/python2.7/dist-packages/repoze/who/middleware.py is in python-repoze.who 1.0.18-4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/repoze/who/../../../../../share/pyshared/repoze/who/middleware.py