Type checking for `property.{fget,fset,fdel}`
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Description
When trying to fix an issue in typeshed we found that both mypy and pyright raised incorrect errors that were also inconsistent with one another so I'm creating this issue to facilitate further discussion on resolving this.
class A:
@property
def foo(self):
return 'a'
A.foo.fget(A())
mypy: "Callable[[A], Any]" has no attribute "fget"
pyright: Expected 0 positional arguments
Initial PR attempt and relevant discussions can be found here
Contributor guide
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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
Review the linked typeshed issue #7516 and PR #7520 first, then compare the mypy and pyright diagnostics for the example in this issue. A useful outcome is an agreed interpretation of property.fget, property.fset, and property.fdel, followed by a concrete, validated follow-up change.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- devtools
- Issue type
- Bug
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100