def show_call_order(cls, methname):
    'Utility to show the call chain'
    classes = [cls for cls in cls.__mro__ if methname in cls.__dict__]
    print('  ==>  '.join('%s.%s' % (cls.__name__, methname) for cls in classes))
Utility to show the call chain
recipes/Python/579130_How_use_super_effectively__Pyth32/recipe-579130.py