Define public names of the humidifier integration

[epenet]

Breaking change

For developers only: as the humidifier integration now defines __all__, from homeassistant.components.humidifier import * only imports the names listed in it, instead of every public name of the module. No such wildcard import was found in core or in the custom integrations of the HACS default repositories. Explicit imports are not affected.

Proposed change

Define the public names of the humidifier integration with __all__, as already done by sensor, cover, select, number and other entity platforms.

This came up with @joostlek during refactoring: why the # noqa: F401 markers were needed on the package root imports, and whether they could be removed. Listing the public names in __all__ states that intent explicitly, so the markers are no longer needed.

As humidifiers have no dedicated state enum, STATE_ON and STATE_OFF are exported as the humidifier states, in the same way as other platforms export their *State enum.

It was checked against:

• core: every name imported from homeassistant.components.humidifier by other integrations is included. With no_implicit_reexport temporarily enabled for the humidifier integration (it is currently disabled for homeassistant.components.*), mypy reports no re-export issue on the 30 core modules importing from it;
• HACS: every name imported from the package root by the custom integrations in the HACS default repositories (~2,400) is included.

Enforcing this with mypy (no_implicit_reexport for the entity platforms) will follow once all of them define __all__. No functional change.

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.
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• 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:

• Documentation added/updated for www.home-assistant.io

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.

To help with the load of incoming pull requests:

• I have reviewed two other open pull requests in this repository.

[home-assistant]

Hey there @home-assistant/core, @Shulyaka, mind taking a look at this pull request as it has been labeled with an integration (humidifier) you are listed as a code owner for? Thanks!

Code owner commands

Code owners of humidifier can trigger bot actions by commenting:

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[Copilot]

🟢 Approval recommended

The export list preserves supported imports, the wildcard-import change is documented, and no blocking issues remain.

0 open findings

What changed in this PR

Defines the humidifier platform’s public API explicitly, consistent with other entity platforms.

Changes:

• Adds __all__ for supported public names, including both state constants.
• Removes redundant unused-import suppressions.

File	Description
homeassistant/​components/​humidifier/​__init__.py	Declares public exports and imports STATE_OFF.

🧠 Review effort: Balanced

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