iscoroutinefunction should use TypeIs
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Assessment
- Difficulty
- 2/5
- Estimated time
- 1-3 hours
- Newbie friendliness
- 64/100
Research direction
Locate the typeshed stub entry for inspect.iscoroutinefunction and compare its annotation with the other inspect is... functions that use TypeIs. Update the annotation so both branches narrow as described, then run the relevant type-checking tests to confirm coroutine functions and the else branch are narrowed correctly.
Written by the indexing model from the issue text.
Description
One of the things I find myself writing a lot is
if iscoroutinefunction(myfunction):
do_something_with_async(myfunction)
else:
do_something_with_just_sync(myfunction)
however the else block doesn't narrow the type to non-awaitable. Shouldn't it? Some of the other is... functions in inspect seem to use TypeIs as well.
- Dominant language
- Python
- Stars
- 5.1k
- Forks
- 2.1k
- Avg merge
- 1d 13h
- Merged PRs (30d)
- 73
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First steps
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