/usr/lib/python2.6/dist-packages/TraitsBackendWX-3.6.0-py2.6-nspkg.pth is in python-traitsbackendwx 3.6.0-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.6/dist-packages/../../../share/pyshared/TraitsBackendWX-3.6.0-py2.6-nspkg.pth