/usr/lib/python2.7/dist-packages/sphinxcontrib/httpdomain.py is in python-sphinxcontrib-httpdomain 1.1.8-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/sphinxcontrib/../../../../share/pyshared/sphinxcontrib/httpdomain.py