Behavior difference of super with CPython

[S-YOU]

For the given code:

class A(tuple):
  def __init__(self, arg=None):
    print super(A, self)
    print super(A, self).__init__
    super(A, self).__init__(arg)

print A([1,2,3])

---	CPython	Grumpy
super(A, self)	<super: <class 'A'>, <A object>>	<super object at 0xc4203b8d80>
super(A, self).__init__	<method-wrapper '__init__' of A object at 0x1024d1110>	<bound method super.__init__ of <super object at 0xc4203b8e10>>
super(A, self).__init__(arg)	(1, 2, 3)	TypeError: '__init__' requires 2 arguments

[trotterdylan]

Thanks for reporting this! I took a quick look at this but wasn't able to figure out the exact problem. I suspect it'll be a pretty simple fix once it's clear exactly what's happening.