/usr/lib/python2.6/dist-packages/gtk-2.0/gtk/__init__.py is in python-gtk2 2.24.0-3+b1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.6/dist-packages/gtk-2.0/gtk/../../../../../share/pyshared/gtk-2.0/gtk/__init__.py