Class variable gets the type of instance variable

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#4,886 4 comments 4 reactions 0 assignees View on GitHub

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
35/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
python
Domain
tooling

Research direction

Reproduce the issue using the provided Test class and reveal_type example, then compare the result with the PEP 526 rule described in the report. No source file or test entry point is named; completion requires determining whether this class-level access is incorrectly accepted and documenting the expected behavior in a regression test.

Written by the indexing model from the issue text.

Description

topic-runtime-semantics topic-variable-scope

According to PEP 526, type annotations inside class bodies apply to instances unless wrapped with ClassVar. Am I misreading something or is this a bug?

class Test:
    a: int

reveal_type(Test.a + 1)

Revealed type is 'builtins.int'
Dominant language
Python
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Avg merge
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Merged PRs (30d)
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