using-generic-type-syntax-in-unsupported-version / W2604

Message emitted:

Generic type syntax (PEP 695) is not supported by all versions included in the py-version setting

Description:

Used when the py-version set by the user is lower than 3.12 and pylint encounters generic type syntax.

Problematic code:

type Vector = list[float]  # [using-generic-type-syntax-in-unsupported-version]

Correct code:

from typing import TypeAlias

Vector: TypeAlias = list[float]

Configuration file:

[main]
py-version=3.11

Additional details:

Generic type syntax was introduced in Python 3.12; to use it, please use a more recent version of Python.

Created by the unsupported_version checker.