Pygtk but no gtk?

[chengiz at my-deja.com]

I am trying to build an app that requires pygtk so I installed the
latter. The app does the following:
import pygtk
...
import gtk

This crashes with
ImportError: No module named gtk.

I dont know where to get this gtk module from. I assumed pygtk would be
it coz the app doesnt mention any dependency on gtk, also googling
didnt find anything but pygtk. Did I screw up the installation or
something? I dont find any gtk.py file in the python library
directories.

Thank you.
Khan