List all base classes in a hierarchy of given class?

Question

Given a class Foo (whether it is a new-style class or not), how do you generate all the base classes - anywhere in the inheritance hierarchy -

Answer 1

According to the Python doc, we can also simply use class.__mro__ attribute or class.mro() method:

>>> class A:
...     pass
... 
>>> class B(A):
...     pass
... 
>>> B.__mro__
(, , )
>>> A.__mro__
(, )
>>> object.__mro__
(,)
>>>
>>> B.mro()
[, , ]
>>> A.mro()
[, ]
>>> object.mro()
[]
>>> A in B.mro()
True