[New-bugs-announce] [issue36591] Should be a typing.UserNamedTuple

[Terry Davis]

New submission from Terry Davis <terry.y.davis at gmail.com>:

There should be a builtin alias for `Type[NamedTuple]` so that library 
authors user-supplied `NamedTuple`s 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...

----------
components: Library (Lib)
messages: 339893
nosy: Terry Davis
priority: normal
severity: normal
status: open
title: Should be a typing.UserNamedTuple
type: enhancement

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue36591>
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