Issue 36591: Should be a typing.UserNamedTuple (original) (raw)

There should be a builtin alias for Type[NamedTuple] so that library authors user-supplied NamedTuples can properly type-check their code.

Here's a code sample that causes an issue in my IDE (PyCharm)

from typing import NamedTuple, Type

def fun(NT: NamedTuple, fill): # Complains that NamedTuple is not callable nt = NT(*fill) return nt

UserNamedTuple = Type[NamedTuple]

def fun(NT: UserNamedTuple, fill): # No complaints nt = NT(*fill) return nt

This could just be an issue with PyCharm (I don't use mypy), but the correct to annotate this is with a Type[NamedTuple], so I hope mypy et. al. wouldn't this as a special case...