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fromtypingimportTypeVar,Generic,CallableT=TypeVar("T")P=TypeVar("P")classTest(Generic[T]): ...S=Callable[[Test],P]deftest(arg:S[T]): ...
On python3.11 i can't run this code. Code falls on an attempt to parameterizeS
Traceback:
Traceback (most recent call last): File "C:\Users\KIRILL-1\PycharmProjects\dataclass_factory\exp.py", line 12, in <module> def test(arg: S[T]): ... ~^^^ File "C:\Users\KIRILL-1\AppData\Local\Programs\Python\Python311\Lib\typing.py", line 360, in inner return cached(*args, **kwds) ^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\KIRILL-1\AppData\Local\Programs\Python\Python311\Lib\typing.py", line 1391, in __getitem__ new_args = self._determine_new_args(args) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\KIRILL-1\AppData\Local\Programs\Python\Python311\Lib\typing.py", line 1440, in _determine_new_args subargs.append(new_arg_by_param[x]) ~~~~~~~~~~~~~~~~^^^KeyError: ~THow i understand, in 3.11, an attempt is being made to parameterizeTest inS, but in 3.10 - not
Is it new behavior or a bug?