/usr/lib/python2.7/dist-packages/vobject/hcalendar.py is in python-vobject 0.8.1c-4ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/vobject/../../../../share/pyshared/vobject/hcalendar.py