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  • #3255
Closed
Open
Issue created Jun 29, 2020 by timfel@timfelgentreff

PyPy incorrectly calls `__get__` on the result of looking up `__get__`

Here's an example:

class MagicCaller():
    def __get__(*args):
        print("MagicCaller.__get__")
        return lambda *a1: lambda *a: (a1, a, args)

    def __call__(*args):
        print("MagicCaller.__call__")
        return lambda *a: (a, args)


class Descriptor():
    __get__ = MagicCaller()


class X():
    __getattribute__ = Descriptor()


print(X().foo)

CPython prints:

MagicCaller.__call__
(('foo',), (<__main__.MagicCaller object at 0x7f11c8054e20>, <__main__.Descriptor object at 0x7f11c8054cd0>, <__main__.X object at 0x7f11c800b310>, <class '__main__.X'>))

PyPy prints

MagicCaller.__get__
((<__main__.X object at 0x00007fb299568410>, <class '__main__.X'>), ('foo',), (<__main__.MagicCaller object at 0x00007fb299568448>, <__main__.Descriptor object at 0x00007fb299568480>, <class '__main__.Descriptor'>))
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