/usr/share/pygtk/ is in python-gnome2-dev 2.28.1+dfsg-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/pygtk/2.0/
/usr/share/pygtk/2.0/argtypes/
/usr/share/pygtk/2.0/argtypes/bonobo-arg-types.py
/usr/share/pygtk/2.0/argtypes/gconf-arg-types.py
/usr/share/pygtk/2.0/defs/
/usr/share/pygtk/2.0/defs/bonobo-types.defs
/usr/share/pygtk/2.0/defs/bonobo.defs
/usr/share/pygtk/2.0/defs/bonoboui-types.defs
/usr/share/pygtk/2.0/defs/bonoboui.defs
/usr/share/pygtk/2.0/defs/canvas.defs
/usr/share/pygtk/2.0/defs/gconf.defs
/usr/share/pygtk/2.0/defs/gnome-types.defs
/usr/share/pygtk/2.0/defs/gnome.defs
/usr/share/pygtk/2.0/defs/ui.defs