/usr/lib/python2.7/dist-packages/GnomeCodecInstall/Main.py is in gnome-codec-install 0.4.7+nmu1ubuntu3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/GnomeCodecInstall/../../../../share/pyshared/GnomeCodecInstall/Main.py