no error on unused expression with type `Any` when `disallow-any-expr` is enabled
Open
Nobody has claimed this yet.
bug
priority-2-low
topic-disallow-any
- Dominant language
- Python
- Stars
- 20.6k
- Forks
- 3.3k
- PR merge metrics
- PR metrics pending
Description
from typing import Any
foo: Any #type:ignore[misc]
foo # no error
print(foo) # error: Expression has type "Any"
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
The bug is reproduced in the linked mypy-play example; start by running it with disallow-any-expr enabled and compare the standalone foo expression with print(foo). Trace the checker path for unused expressions and add a regression test for the reproducer. Done means the standalone Any expression is diagnosed without changing the existing call diagnostic.
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
- 38/100