/usr/lib/python2.7/dist-packages/prettytable-0.5.egg-info/PKG-INFO is in python-prettytable 0.5-1ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/prettytable-0.5.egg-info/../../../../share/pyshared/prettytable-0.5.egg-info/PKG-INFO