First thing to consider: C inherits constructor from B (because it's not defined in C).
Second thing to consider:
self.__class__ in __init__ invocation in C class is C, not B.
Let's analyze:
C().__init__ calls super(self.__class__, self).__init__(v, v2) which is resolved to
super(C, self).__init__(v, v2) which means B.__init__(self, v, v2). - First argument passed to
B.__init__ has a type C. super(self.__class__, self).__init__(v, v2) is again resolved to B.__init__(self, v, v2).
- And again, and again, and again. And there is your infinite recursion.
