/usr/lib/python2.7/dist-packages/sidl/EnfTraceLevel.py is in python-sidl 1.4.0.dfsg-8.2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/sidl/../../../../share/pyshared/sidl/EnfTraceLevel.py