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I wish they make it possible to use any, callable builtins for type annotations

You can.

def foobar(things: list[tuple[int, Floob | None]]) -> dict[int, int]):

Possible since 3.11 I think, maybe even 3.10.

You can use it since 3.7 with `from __future__ import annotations`

I think they mean the literal builtins `any` and `callable` instead of typing.Any and typing.Callable.