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Use Generator and AsyncGenerator for contextmanager typing#162144

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cdce8p merged 1 commit intohome-assistant:devfrom
cdce8p:fix-contextmanager-typing
Feb 3, 2026
Merged

Use Generator and AsyncGenerator for contextmanager typing#162144
cdce8p merged 1 commit intohome-assistant:devfrom
cdce8p:fix-contextmanager-typing

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@cdce8p cdce8p commented Feb 3, 2026

Proposed change

Any function decorated with contextmanager / asynccontextmanager should use Generator / AsyncGenerator as return annotation (instead of Iterator / AsyncIterator). This will be a warning in the next mypy release.

Type of change

  • Dependency upgrade
  • Bugfix (non-breaking change which fixes an issue)
  • New integration (thank you!)
  • New feature (which adds functionality to an existing integration)
  • Deprecation (breaking change to happen in the future)
  • Breaking change (fix/feature causing existing functionality to break)
  • Code quality improvements to existing code or addition of tests

Additional information

  • This PR fixes or closes issue: fixes #
  • This PR is related to issue:
  • Link to documentation pull request:
  • Link to developer documentation pull request:
  • Link to frontend pull request:

Checklist

  • I understand the code I am submitting and can explain how it works.
  • The code change is tested and works locally.
  • Local tests pass. Your PR cannot be merged unless tests pass
  • There is no commented out code in this PR.
  • I have followed the development checklist
  • I have followed the perfect PR recommendations
  • The code has been formatted using Ruff (ruff format homeassistant tests)
  • Tests have been added to verify that the new code works.
  • Any generated code has been carefully reviewed for correctness and compliance with project standards.

If user exposed functionality or configuration variables are added/changed:

If the code communicates with devices, web services, or third-party tools:

  • The manifest file has all fields filled out correctly.
    Updated and included derived files by running: python3 -m script.hassfest.
  • New or updated dependencies have been added to requirements_all.txt.
    Updated by running python3 -m script.gen_requirements_all.
  • For the updated dependencies a diff between library versions and ideally a link to the changelog/release notes is added to the PR description.

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@cdce8p cdce8p merged commit d735387 into home-assistant:dev Feb 3, 2026
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@cdce8p cdce8p deleted the fix-contextmanager-typing branch February 3, 2026 12:52
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3 participants