/usr/lib/python2.7/dist-packages/zope/security/examples/sandbox.py is in python-zope.security 3.8.3-2ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/zope/security/examples/../../../../../../share/pyshared/zope/security/examples/sandbox.py