Improve typing.TypeGuard docstring

[JelleZijlstra]

The current docstring for typing.TypeGuard includes a single example, but that example does not use TypeGuard, and in fact demonstrates behavior that differs from that of TypeGuard in essential ways. It would be less confusing if the TypeGuard example actually exemplified TypeGuard.

Linked PRs

• gh-117521: Improve typing.TypeGuard docstring #117522
• [3.12] gh-117521: Improve typing.TypeGuard docstring (GH-117522) #117538

[nineteendo]

Can this be closed, or must this be backported to 3.11?

[AlexWaygood]

It can't be backported any further than it already has been, as Python 3.11 is no longer accepting any changes unless they relate to security issues. So this can be closed now, thanks!