Bump the python-packages group with 3 updates

[dependabot]

Bumps the python-packages group with 3 updates: mypy, prek and ruff.

Updates mypy from 2.3.0 to 2.3.1

Changelog

Sourced from mypy's changelog.

Mypy 2.3.1

• Fix mypyc crash on double yielding Iterators (Daniël van Noord, PR 21826)
• Fix mypyc default_factory for inherited dataclass (Daniël van Noord, PR 21785)
• Clear mypyc coroutine env on coroutine completion (Piotr Sawicki, PR 21734)
• Fix crash when unpacking return value from overload (Shantanu, PR 21830)

Acknowledgements

Thanks to all mypy contributors who contributed to this release:

• Agriya Khetarpal
• Ethan Sarp
• Ivan Levkivskyi
• Jingchen Ye
• Jukka Lehtosalo
• Piotr Sawicki
• Shantanu
• Tom Bannink
• Viktor Szépe
• ygale

I'd also like to thank my employer, Dropbox, for supporting mypy development.

Mypy 2.2

We've just uploaded mypy 2.2.0 to the Python Package Index (PyPI). Mypy is a static type checker for Python. This release includes new features, performance improvements and bug fixes. You can install it as follows:

python3 -m pip install -U mypy

You can read the full documentation for this release on Read the Docs.

Support for Closed TypedDicts (PEP 728)

Mypy now supports closed TypedDicts as specified in PEP 728. A closed TypedDict cannot have extra keys beyond those explicitly defined. This allows the type checker to determine that certain operations are safe when they otherwise wouldn't be due to the potential presence of unknown keys.

You can use the closed keyword argument with TypedDict:

HasName = TypedDict("HasName", {"name": str})
HasOnlyName = TypedDict("HasOnlyName", {"name": str}, closed=True)
Movie = TypedDict("Movie", {"name": str, "year": int})
movie: Movie = {"name": "Nimona", "year": 2023}
has_name: HasName = movie  # OK: HasName is open (default)
has_only_name: HasOnlyName = movie  # Error: HasOnlyName is closed and Movie has extra "year" key
</tr></table>

... (truncated)

Commits

• d642c44 Bump version to 2.3.1
• a392429 [mypyc] Fix crash on double yielding Iterators (#21826)
• 4843e77 [mypyc] Fix default_factory for inherited dataclass (#21785)
• 14f5df9 [mypyc] Clear coroutine env on coroutine completion (#21734)
• 6dfa06d Fix crash when unpacking return value from overload (#21830)
• a385746 Bump version to 2.3.1+dev
• See full diff in compare view

Updates prek from 0.4.12 to 0.5.0

Release notes

Sourced from prek's releases.

0.5.0

Release Notes

Released on 2026-08-27.

Highlights

Choose where hook toolchains come from

language_version now accepts a source preference alongside the version request, letting you control where prek looks for a compatible toolchain when it creates a hook environment. Use managed (the default) or system to choose which source prek tries first while still allowing fallback and downloads. Use only-managed or only-system to require one source.

For example, this local Ruff hook requires a Python 3.12 toolchain managed by prek:

repos:
  - repo: local
    hooks:
      - id: ruff
        name: ruff
        language: python
        entry: ruff check
        additional_dependencies: [ruff]
        language_version:
          request: "3.12"
          preference: only-managed

With only-managed, prek reuses a compatible toolchain from its managed store or downloads one when needed. It never falls back to Python from PATH, an OS package manager, or a version manager, so toolchain selection does not depend on the developer or CI machine's external environment.

Existing scalar values such as language_version: "3.12" continue to work. See toolchain management and language_version for the full source-selection behavior. (#2613)

Breaking changes

The breaking changes in this release are mostly small cleanups, and most users should not be affected.

• Group names can no longer start with @. This prefix is now reserved for special group selectors such as the new @ungrouped selector. (#2617)
• PREK_MAX_CONCURRENCY has been removed. Use PREK_CONCURRENT_HOOKS and PREK_CONCURRENT_BATCHES to control hook and per-hook batch concurrency separately. (#2620)
• The top-level prek init-template-dir command has been removed. Use prek util init-template-dir, or prek init-templatedir for drop-in compatibility with pre-commit. (#2623)
• prek auto-update has been removed. Use prek update, or prek autoupdate for drop-in compatibility with pre-commit. (#2619)

... (truncated)

Changelog

Sourced from prek's changelog.

0.5.0

Released on 2026-08-27.

Highlights

Choose where hook toolchains come from

language_version now accepts a source preference alongside the version request, letting you control where prek looks for a compatible toolchain when it creates a hook environment. Use managed (the default) or system to choose which source prek tries first while still allowing fallback and downloads. Use only-managed or only-system to require one source.

For example, this local Ruff hook requires a Python 3.12 toolchain managed by prek:

repos:
  - repo: local
    hooks:
      - id: ruff
        name: ruff
        language: python
        entry: ruff check
        additional_dependencies: [ruff]
        language_version:
          request: "3.12"
          preference: only-managed

With only-managed, prek reuses a compatible toolchain from its managed store or downloads one when needed. It never falls back to Python from PATH, an OS package manager, or a version manager, so toolchain selection does not depend on the developer or CI machine's external environment.

Existing scalar values such as language_version: "3.12" continue to work. See toolchain management and language_version for the full source-selection behavior. (#2613)

Breaking changes

The breaking changes in this release are mostly small cleanups, and most users should not be affected.

• Group names can no longer start with @. This prefix is now reserved for special group selectors such as the new @ungrouped selector. (#2617)
• PREK_MAX_CONCURRENCY has been removed. Use PREK_CONCURRENT_HOOKS and PREK_CONCURRENT_BATCHES to control hook and per-hook batch concurrency separately. (#2620)
• The top-level prek init-template-dir command has been removed. Use prek util init-template-dir, or prek init-templatedir for drop-in compatibility with pre-commit. (#2623)
• prek auto-update has been removed. Use prek update, or prek autoupdate for drop-in compatibility with pre-commit. (#2619)

Enhancements

... (truncated)

Commits

• 67f8535 Bump version to 0.5.0 (#2631)
• 4546bef Remove legacy init-template-dir command (#2623)
• e63bd4b Remove hook marker schema 0 (#2622)
• 8c433ae Remove config-tracking cache bootstrap (#2621)
• 62ca460 Remove PREK_MAX_CONCURRENCY (#2620)
• e2468ea Remove legacy update aliases (#2619)
• 795c3a4 Group run options in CLI help (#2629)
• b27eb6e Document prek run architecture (#2630)
• 7dd9aa9 Avoid persisting docs workflow credentials (#2627)
• 23815bd Remove the @builtin group selector (#2628)
• Additional commits viewable in compare view

Updates ruff from 0.16.1 to 0.16.5

Release notes

Sourced from ruff's releases.

0.16.5

Release Notes

Released on 2026-08-27.

Preview features

• Allow rules without codes (#28049)
• Introduce category selectors (#27666)
• Update preview default rules and categories (#27877)

Bug fixes

• [flake8-async] Detect blocking generic HTTP requests (ASYNC210) (#28024)
• [flake8-datetimez] Allow timezone-safe strptime chains (DTZ007) (#28023)
• [flake8-simplify] Respect side effects in lambda defaults (SIM401) (#28000)

Server

• Fix duplicated "of" in ClientOptions doc comment (#27978)

Documentation

• Document rule acceptance guidelines (#27910)
• Document the new category selectors (#27906)

Contributors

• @​AlexWaygood
• @​sharkdp
• @​jelle-openai
• @​charliermarsh
• @​ntBre
• @​aarushkandukoori

Install ruff 0.16.5

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://releases.astral.sh/github/ruff/releases/download/0.16.5/ruff-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://releases.astral.sh/github/ruff/releases/download/0.16.5/ruff-installer.ps1 | iex"

Download ruff 0.16.5

... (truncated)

Changelog

Sourced from ruff's changelog.

0.16.5

Released on 2026-08-27.

Preview features

• Allow rules without codes (#28049)
• Introduce category selectors (#27666)
• Update preview default rules and categories (#27877)

Bug fixes

• [flake8-async] Detect blocking generic HTTP requests (ASYNC210) (#28024)
• [flake8-datetimez] Allow timezone-safe strptime chains (DTZ007) (#28023)
• [flake8-simplify] Respect side effects in lambda defaults (SIM401) (#28000)

Server

• Fix duplicated "of" in ClientOptions doc comment (#27978)

Documentation

• Document rule acceptance guidelines (#27910)
• Document the new category selectors (#27906)

Contributors

• @​AlexWaygood
• @​sharkdp
• @​jelle-openai
• @​charliermarsh
• @​ntBre
• @​aarushkandukoori

0.16.4

Released on 2026-08-20.

Preview features

• [flake8-use-pathlib] Add autofix for PTH116 (#26460)
• [refurb] Restrict delete-full-slice to lists (FURB131) (#27711)
• [refurb] Skip FURB101 and FURB103 when the open argument is a file descriptor (#27643)

Bug fixes

• Fix InvalidInstruction on Windows CPUs that do not support POPCNT (#27803)
• [pyflakes] Emit semantic syntax errors in string type definitions as F722 (#27835)
• [pylint] Allow os._exit imports in import-private-name (PLC2701) (#27738)

... (truncated)

Commits

• 9e4938c Bump 0.16.5 (#28110)
• aad0e90 Allow rules without codes (#28049)
• 5fdab73 Update preview default rules and categories (#27877)
• 29c8e5b Document rule acceptance guidelines (#27910)
• 50a4d7f Document the new category selectors (#27906)
• ada8795 Introduce category selectors (#27666)
• d894723 [ty] Infer lambda parameters through callable type aliases (#28109)
• 2685fde [ty] Narrow functional enum members in == and match (#28103)
• efcffd2 [ty] Intersection simplifications with subtype-related generic specialization...
• eb78048 [ty] Bump ecosystem-analyzer for HTML escaping (#28104)
• Additional commits viewable in compare view

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