# Python 2.7.15

class A(object):
    def __init__(self):
        print "class A __init__ called."

class B(A):
    def __init__(self):
        super(B, self).__init__()

    def ShouldHaveBeenInClassA():
        pass

class C(B):
    def __init__(self):
        super(C, self).__init__()

    def ShouldAlsoHaveBeenInClassA():
        pass

# Ad infinitum ...

obj = C()