/usr/lib/python2.7/dist-packages/twisted/words/protocols/jabber/ is in python-twisted-words 13.2.0-1ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/twisted/words/protocols/jabber/__init__.py
/usr/lib/python2.7/dist-packages/twisted/words/protocols/jabber/client.py
/usr/lib/python2.7/dist-packages/twisted/words/protocols/jabber/component.py
/usr/lib/python2.7/dist-packages/twisted/words/protocols/jabber/error.py
/usr/lib/python2.7/dist-packages/twisted/words/protocols/jabber/ijabber.py
/usr/lib/python2.7/dist-packages/twisted/words/protocols/jabber/jid.py
/usr/lib/python2.7/dist-packages/twisted/words/protocols/jabber/jstrports.py
/usr/lib/python2.7/dist-packages/twisted/words/protocols/jabber/sasl.py
/usr/lib/python2.7/dist-packages/twisted/words/protocols/jabber/sasl_mechanisms.py
/usr/lib/python2.7/dist-packages/twisted/words/protocols/jabber/xmlstream.py
/usr/lib/python2.7/dist-packages/twisted/words/protocols/jabber/xmpp_stringprep.py