/usr/lib/python2.7/dist-packages/sphinxcontrib_httpdomain-1.1.8-nspkg.pth 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/../../../share/pyshared/sphinxcontrib_httpdomain-1.1.8-nspkg.pth