When I annotate an async function with@deprecated(...),inspect.iscoroutinefunction no longer returns True. This is not what I expect to happen, as withpartial fromfunctools this does not happen.

Consider the following code:

importinspectfromfunctoolsimportpartialfromtyping_extensionsimportdeprecatedasyncdefcoroutinefunction_a():pass@deprecated("deprecated coroutine")asyncdefcoroutinefunction_b():passassertinspect.iscoroutinefunction(coroutinefunction_a)isTrue# correctassertinspect.iscoroutinefunction(partial(coroutinefunction_a))isTrue# correctassertinspect.iscoroutinefunction(coroutinefunction_b)isTrue# fail

With typing_extensions and python3.13, the last assertion fails.

This is especially annoying since e.g.libraries useinspect.iscoroutinefunction to detect the type of function.

I am not sure this is the correct place for this bug report, as this both happens with python 3.13 and typing_extensions on older python versions.

Linked PRs

• gh-122088: Copy the coroutine status of the underlying callable in@warnings.deprecated #122086
• [3.13] gh-122088: Copy the coroutine status of the underlying callable in@warnings.deprecated (GH-122086) #122156