Asyncio should not import typing at runtime

[mikeshardmind]

Feature or enhancement

Proposal:

Currently, asyncio.timeout imports final, Type, and Optional from typing.

final has no impact on type checkers, as they use the typeshed for the standard library, and type and optional can be written without importing from typing. This caused a noticable impossibility to remove typing from startup costs.

(I'll PR the corresponding easy changes)

Has this already been discussed elsewhere?

This is a minor feature, which does not need previous discussion elsewhere

Links to previous discussion of this feature:

No response

Linked PRs

• gh-128559: Remove typing import from asyncio.timeouts #128560

[picnixz]

(Not really a typing related stuff even though we're import typing)