/usr/lib/python2.7/dist-packages/yenc.py is in python-yenc 0.4.0-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/../../../share/pyshared/yenc.py
/usr/lib/python2.7/dist-packages/../../../share/pyshared/yenc.py