/usr/lib/python2.7/dist-packages/rtslib/config.py is in python-rtslib 1:3.0~pre4.1~g1b33ceb-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/rtslib/../../../../share/pyshared/rtslib/config.py