[Python-ideas] Make __class__ (and maybe other magic variables) visible to functions that was defined outside a class, but then rebound into a class?

[Yua]

For example, the following code would report an error:
   class base():
        def foo(self) -> None:
            print('Base!')

   def placement(self) -> None:
        super().foo()

   class child(base):
        def foo(self) -> None:
            pass
        foo = placement

   child().foo()

RuntimeError: super(): __class__ cell not found


However, it would be OK if `placement` is defined inside the class:

   class base():
        def foo(self) -> None:
            print('Base!')

   class child(base):
        def placement(self) -> None:
            super().foo()
        def foo(self) -> None:
            pass
        foo = placement

   child().foo()

which prints:

   Base!


I think it would be natural if those functions that was defined outside 
a class, but then rebound into a class, can see magic variables like 
__class__ that are only shared by those functions defined inside a class.


Thank you!


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