/usr/lib/python2.7/dist-packages/pyxmpp/stanza.py is in python-pyxmpp 1.1.2-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/pyxmpp/../../../../share/pyshared/pyxmpp/stanza.py