/usr/lib/python2.7/dist-packages/pocketlint/contrib/cssccc.py is in python-pocket-lint 0.5.31-0ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/pocketlint/contrib/../../../../../share/pyshared/pocketlint/contrib/cssccc.py