/usr/lib/python2.7/dist-packages/RestrictedPython-3.6.0.egg-info/not-zip-safe is in python-restrictedpython 3.6.0-0ubuntu4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/RestrictedPython-3.6.0.egg-info/../../../../share/pyshared/RestrictedPython-3.6.0.egg-info/not-zip-safe