I don’t know if many of you noticed, but these ITK packages are now in the default repository for Ubuntu Oneiric Ocelot (11.10). I worked with the Debian guys to get my ITK python wrapping settings merged into the default packages. So for Oneiric Ocelot and future Ubuntu versions, you do not need to use my repository.
To install the python wrappings and its dependencies, just add the python-insighttoolkit3 package:
sudo apt-get install python-insighttoolkit3