"""

categories: Core,Classes

description: Method Resolution Order (MRO) is not compliant with CPython

cause: Depth first non-exhaustive method resolution order

workaround: Avoid complex class hierarchies with multiple inheritance and complex method overrides. Keep in mind that many languages don't support multiple inheritance at all.

"""

class Foo:

def __str__(self):

return "Foo"

class C(tuple, Foo):

pass

t = C((1, 2, 3))

print(t)