/usr/lib/python2.7/dist-packages/Cython/Plex/ is in cython 0.23.4-0ubuntu5.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/Cython/Plex/Actions.pxd
/usr/lib/python2.7/dist-packages/Cython/Plex/Actions.py
/usr/lib/python2.7/dist-packages/Cython/Plex/Actions.so
/usr/lib/python2.7/dist-packages/Cython/Plex/DFA.py
/usr/lib/python2.7/dist-packages/Cython/Plex/Errors.py
/usr/lib/python2.7/dist-packages/Cython/Plex/Lexicons.py
/usr/lib/python2.7/dist-packages/Cython/Plex/Machines.py
/usr/lib/python2.7/dist-packages/Cython/Plex/Regexps.py
/usr/lib/python2.7/dist-packages/Cython/Plex/Scanners.pxd
/usr/lib/python2.7/dist-packages/Cython/Plex/Scanners.py
/usr/lib/python2.7/dist-packages/Cython/Plex/Scanners.so
/usr/lib/python2.7/dist-packages/Cython/Plex/Timing.py
/usr/lib/python2.7/dist-packages/Cython/Plex/Traditional.py
/usr/lib/python2.7/dist-packages/Cython/Plex/Transitions.py
/usr/lib/python2.7/dist-packages/Cython/Plex/__init__.py