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Literal composition #11616

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Dreamsorcerer opened this issue Nov 25, 2021 · 1 comment

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feature priority-2-low topic-literal-types

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Dreamsorcerer commented Nov 25, 2021 •

edited

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Could be nice to support composition of literals, so that something like this type checks correctly:

from typing import Literal

def page(page: Literal["p1", "p2"]): ...

def foo(num: Literal["1", "2"]):
    page(f"p{num}")
    page("p" + num)
    page("p" + "1")

The text was updated successfully, but these errors were encountered:

Dreamsorcerer added the feature label

Member

sobolevn commented Nov 26, 2021

Related https://www.typescriptlang.org/docs/handbook/2/template-literal-types.html

AlexWaygood added topic-literal-types priority-2-low labels

brianschubert mentioned this issue

Add support for literal addition #18004

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