Independent library to creating GUI in Python
Created as multiplatform, multibackend module. There is one frontend module and many backend modules (currently only GTK+ 2.0 binding). Supported widgets are Window, Button, Checkbox, Radiobox, Togglebutton, TextEntry, TextArea, Scrollbar, Tree, Frame etc.
For simple HelloWorld see http://www.py.cz/Members/honza (in Czech, but code is international :)
Uses advanced OOP techniques, such properties, generators, metaclasses etc. Requires Python 2.2 or 2.3