Me and my group have been working on a python project for Nokia XM5800 as a university project, which required a working gui toolkit with touch support. Since the options seem to be pretty limited, we decided to slap one together The results are available here: https://sourceforge.net/projects/tgt/ . Sourcecode is licensed under MIT license. Suggestions for improvement are of course welcome.
Btw, some features eg. virtual mouse, are still buggy :/