Subclass of typing.Any cannot be instantiated with arguments

Bug report

Bug description:

from typing import Any

class C(Any):
    def __init__(self, v): ...

C(0)   # TypeError: object.__new__() takes exactly one argument (the type to instantiate)

The fix should be easy. Just replace --

        return super().__new__(cls, *args, **kwargs)

with --

        return super().__new__(cls)

in typing.Any.__new__(...), as the superclass is object and its __new__ doesn't accept additional arguments.

CPython versions tested on:

3.12

Operating systems tested on:

Linux, Windows

Linked PRs

gh-117110: Fix subclasses of typing.Any with custom constructors (#11…

pythongh-117110: Fix subclasses of typing.Any with custom constructors (

[3.12] gh-117110: Fix subclasses of typing.Any with custom constructo…

[3.11] gh-117110: Fix subclasses of typing.Any with custom constructo…

Squashed commit of the following:

pythongh-117110: Fix subclasses of typing.Any with custom constructors (

Hey, but when I do it, I get a TypeError

if TYPE_CHECKING:
    from ebinexpy.source import Ebinex
else:
    Ebinex = Any

TypeError: Any cannot be instantiated

In runtime Any cannot be called, that's correct :)

In runtime Any cannot be called, that's correct :)

ahhhhh got it

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Subclass of `typing.Any` cannot be instantiated with arguments #117110

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Bug description:

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Operating systems tested on:

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Subclass of typing.Any cannot be instantiated with arguments #117110

Description

Bug report

Bug description:

CPython versions tested on:

Operating systems tested on:

Linked PRs

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SantiiRepair commented on Mar 16, 2025

sobolevn commented on Mar 16, 2025

SantiiRepair commented on Mar 16, 2025

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Subclass of `typing.Any` cannot be instantiated with arguments #117110