Function signature matching fails at import
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bug
topic-error-reporting
- Dominant language
- Python
- Stars
- 20.6k
- Forks
- 3.3k
- PR merge metrics
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Description
Bug Report
The provided test defines a function with the same type signature in two ways, directly and through import.
mypy objects that functions are incompatible.
To Reproduce
https://gist.github.com/mypy-play/a5f51cd9246e6478516af53493402890
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 reproduction and confirm the differing results between the direct and imported function definitions. Trace the import-related signature comparison, then add a regression test covering the reproduction and verify that mypy accepts the equivalent signatures.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- tooling
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100