/usr/lib/python2.7/dist-packages/tracing.py is in python-tracing 0.6-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/../../../share/pyshared/tracing.py
/usr/lib/python2.7/dist-packages/../../../share/pyshared/tracing.py