Disallow `type[NoReturn]`
Nobody has claimed this yet.
Assessment
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Newbie friendliness
- 38/100
Research direction
Reproduce the shown assignment using the linked mypy-play example and confirm the current diagnostic. Locate the type-checking path that accepts type[NoReturn], add coverage for this case, and verify that mypy rejects it without changing valid NoReturn behavior.
Written by the indexing model from the issue text.
Description
from typing import NoReturn
# Incompatible types in assignment (expression has type "object", variable has type "Type[NoReturn]") [assignment]
foo: type[NoReturn] = NoReturn
https://mypy-play.net/?mypy=latest&python=3.10&gist=ae2c337cc5fdfe2a3022aaae54903012
- Dominant language
- Python
- Stars
- 20.6k
- Forks
- 3.3k
- Avg merge
- 1d 18h
- Merged PRs (30d)
- 54
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.
More from python/mypy
-
bug
Difficulty 2/5 1-3 hours Newbie friendliness 75/100
-
bug
Difficulty 2/5 1-3 hours Newbie friendliness 78/100
-
bug
Difficulty 2/5 1-3 hours Newbie friendliness 76/100
-
documentation
Difficulty 2/5 1-3 hours Newbie friendliness 72/100
-
bug topic-configuration topic-error-reporting
Difficulty 2/5 1-3 hours Newbie friendliness 68/100
Similar issues
-
Difficulty 2/5 1-3 hours Newbie friendliness 74/100
bancolombia/sentinel#23 ·
-
test md OpenCI
Difficulty 2/5 1-3 hours Newbie friendliness 74/100
-
integration:quickjs org:external priority:backlog topic:code-interpreter topic:middleware type:feature
Difficulty 2/5 1-3 hours Newbie friendliness 74/100
langchain-ai/deepagents#6450 ·
-
bug client
Difficulty 2/5 1-3 hours Newbie friendliness 88/100
-
Difficulty 2/5 1-3 hours Newbie friendliness 74/100