Pure python gui library?
starting in Python 2.7 and 3.1, Tk will look a lot better.
http://docs.python.org/dev/whatsnew/2.7.html#ttk-themed-widgets-for-tk
"Tcl/Tk 8.5 includes a set of themed widgets that re-implement basic Tk widgets but have a more customizable appearance and can therefore more closely resemble the native platform’s widgets. This widget set was originally called Tile, but was renamed to Ttk (for “themed Tk”) on being added to Tcl/Tck release 8.5."