Mine

#!/usr/bin/env pythonclass UI:        def __init__(self, tree):                self.x = 4class PlayerUI(UI):        def __init__(self, tree=None):                UI.__init__(self, tree)class Test(UI):        def __init__(self):                # Neither of these work..                #print self.x                print UI.xif __name__ == "__main__":        PlayerUI()        Test()