/usr/lib/python2.7/dist-packages/txlongpoll/tests/test_client.py is in python-txlongpoll 0.3.1+bzr86-0ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/txlongpoll/tests/../../../../../share/pyshared/txlongpoll/tests/test_client.py