Can't call get on an empty dict
Open
Nobody has claimed this yet.
bug
- Dominant language
- Python
- Stars
- 20.6k
- Forks
- 3.3k
- PR merge metrics
- PR metrics pending
Description
Bug Report
Mypy complains when I try to call get on an empty dict.
To Reproduce
x = {}.get("x")
Expected Behavior
No error.
Actual Behavior
a.py:1: error: No overload variant of "get" of "dict" matches argument type "str" [call-overload]
a.py:1: note: Possible overload variants:
a.py:1: note: def get(self, Never, /) -> None
a.py:1: note: def get(self, Never, Never, /) -> Never
a.py:1: note: def [_T] get(self, Never, _T, /) -> _T
Found 1 error in 1 file (checked 1 source file)
Your Environment
- Mypy version used: 1.11.1
- Python version used: 3.12.4
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
Reproduce the report using the a.py snippet and the stated Mypy and Python versions. Trace how the empty dictionary expression is inferred and how dict.get overloads are selected; done means the example produces no error and has a regression test.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- compilers
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 43/100