[issue32768] object.__new__ does not accept arguments if __bases__ is changed

Alexey Muranov report at bugs.python.org
Tue May 7 03:45:43 EDT 2019


Alexey Muranov <alexey.muranov at gmail.com> added the comment:

IMO "overriding" a method with itself should not change the behaviour. So it seems to me that the following is a bug:

        class C:
            def __init__(self, m):
                print(m)

        class D:
            @staticmethod
            def __new__(cls, *args, **kwargs):
                return super(__class__, __class__).__new__(cls, *args, **kwargs)

            def __init__(self, m):
                print(m)

        C(42) # fine
        D(42) # TypeError: object.__new__() takes exactly one argument

Of course such overriding makes little sense in itself, but forbidding it makes even less sense and creates bugs in more complex scenarios.

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<https://bugs.python.org/issue32768>
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