[Python-Dev] Re: PEP 677 (Callable Type Syntax): Final Call for Comments

We just merged changes to the PEP with a detailed runtime API specification. Highlights are that: - The new type should have an `inspect.Signature`- inspired structured API - It should have a backward-compatible interface with the `__args__` and `__params__` - As with the PEP 604 union syntax, `__eq__` should treat `typing.Callable` and equivalent builtin callable types as equal