/usr/lib/python2.7/dist-packages/pycalendar/nvalue.py is in python-pycalendar 2.0~svn13177-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/pycalendar/../../../../share/pyshared/pycalendar/nvalue.py