using-final-decorator-in-unsupported-version / W2602

Message emitted:

typing.final 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 3.8 and pylint encounters a ``typing.final`` decorator.

Problematic code:

from typing import final


@final  # [using-final-decorator-in-unsupported-version]
class Playtypus(Animal):
    @final  # [using-final-decorator-in-unsupported-version]
    def lay_egg(self): ...

Correct code:

class Playtypus(Animal):
    def lay_egg(self): ...

Configuration file:

[main]
py-version=3.7

Additional details:

The message is emitted when the final decorator is used with a Python version less than 3.8. The final decorator was introduced in Python version 3.8.

Related links:

• PEP 591

Created by the unsupported_version checker.