Unexpected behavior with type narrowing and `Callable`
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bug
- Dominant language
- Python
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Description
Bug Report
I can't really describe the bug well, but hopefully the gist below illustrates it. I'm attempting to go from a list of Callables that includes types (e.g. int, float, etc.) and narrow that to a list of types.
To Reproduce
https://mypy-play.net/?mypy=1.8.0&python=3.11&gist=05a1003c1414446f7196ec4c7c57ded7
Expected Behavior
The gist has no type errors.
Actual Behavior
main.py:5: error: List comprehension has incompatible type List[Callable[..., SupportsComplex]]; expected List[type] [misc]
Found 1 error in 1 file (checked 1 source file)
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the linked mypy-play gist, using mypy 1.8.0 and Python 3.11, and reproduce the error reported at main.py:5. Trace the type narrowing involving Callable and type, then verify that the example produces no type errors.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- devtools
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100