[dependabot]

Bumps the dev-dependencies group with 2 updates in the / directory: mypy and ruff.

Updates mypy from 2.3.1 to 2.4.0

Changelog

Sourced from mypy's changelog.

Mypy Release Notes

Next Release

Mypy 2.4

We've just uploaded mypy 2.4.0 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.

Python 3.15 Support

Mypy 2.4 supports running on Python 3.15 and type checking most Python 3.15 features. This includes the new builtin sentinel type for sentinel values (PEP 661), which mypy now supports (see below for details). Lazy imports (PEP 810) and unpacking in comprehensions (PEP 798) are also supported. Closed TypedDicts (PEP 728) have been supported since mypy 2.2, but the extra_items TypedDict argument, also introduced in PEP 728, is still unsupported. Support for extra_items will be added in a future mypy release.

Native Parser Enabled by Default

Mypy now uses the new native parser by default. It's based on the Ruff parser, and it's significantly faster than the legacy parser, which uses the stdlib ast module. The native parser also has other benefits:

• You can target newer Python versions and use recent Python syntax even when running mypy on an older Python version. For example, you can use --python-version 3.15 when running mypy on Python 3.14.
• Stub files can use syntax that is newer than the target Python version. For example, stubs can use the PEP 695 generic class syntax (class Box[T]: ...) when running on or targeting Python 3.10.
• Parallel type checking requires the native parser.

The legacy parser is still available through --no-native-parser, or native_parser = False in the config file (native_parser = false under [tool.mypy] in pyproject.toml). We are planning to remove the legacy parser in early 2027. If you run into a problem with the native parser, please report it on the issue tracker.

Unlike the legacy parser, the native parser doesn't support type comments for variables defined by for and with statements. These type comments are silently ignored, and the types of the variables are

... (truncated)

Commits

• 935ba8a Bump version to 2.4.0
• 334a678 Add link for PR 22066 in mypy 2.4 changelog (#22082)
• fe69660 Finalize mypy 2.4 changelog (#22080)
• 541fd87 Various mypy 2.4 changelog updates (#22077)
• b231182 Update native parser docs (#22078)
• 04fe42c Initial Changelog for Mypy 2.4 (#22071)
• 0617494 Quick fix for non UTF-8 encodings with new parser (#22066)
• b2f9b60 Bump librt to 0.16.0 (#22067)
• 9d798dc Sync typeshed (#22054)
• 0861bb6 Reduce max protocol stack size to 20 (#22053)
• Additional commits viewable in compare view

Updates ruff from 0.16.9 to 0.17.1

Release notes

Sourced from ruff's releases.

0.17.1

Release Notes

Released on 2026-10-15.

Preview features

• [pycodestyle] Don't treat None, True, or False as keywords (E271-E274) (#29322)

Bug fixes

• Fix dedent with multiple leading comments (#29382)
• [flake8-pyi] Detect legacy positional-only parameters in __new__ methods (PYI063) (#28502)
• [flake8-pyi] Fix false positives on quoted annotations (PYI036) (#29274)
• [perflint] Avoid invalid comprehension suggestions (PERF401, PERF403) (#29366)

Rule changes

• Treat more collections and weakref containers as mutable (#29213)

Documentation

• [flake8-import-conventions] Update default and example aliases (#29333)

Contributors

• @​fixfon
• @​mmaxjr
• @​joshuavetos
• @​nekomario28
• @​ntBre
• @​shan3520

Install ruff 0.17.1

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://releases.astral.sh/github/ruff/releases/download/0.17.1/ruff-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://releases.astral.sh/github/ruff/releases/download/0.17.1/ruff-installer.ps1 | iex"

Download ruff 0.17.1

| File | Platform | Checksum |

... (truncated)

Changelog

Sourced from ruff's changelog.

0.17.1

Released on 2026-10-15.

Preview features

• [pycodestyle] Don't treat None, True, or False as keywords (E271-E274) (#29322)

Bug fixes

• Fix dedent with multiple leading comments (#29382)
• [flake8-pyi] Detect legacy positional-only parameters in __new__ methods (PYI063) (#28502)
• [flake8-pyi] Fix false positives on quoted annotations (PYI036) (#29274)
• [perflint] Avoid invalid comprehension suggestions (PERF401, PERF403) (#29366)

Rule changes

• Treat more collections and weakref containers as mutable (#29213)

Documentation

• [flake8-import-conventions] Update default and example aliases (#29333)

Contributors

• @​fixfon
• @​mmaxjr
• @​joshuavetos
• @​nekomario28
• @​ntBre
• @​shan3520

0.17.0

Released on 2026-10-09.

The executables in our macOS and Windows release archives and ruff wheels are now code-signed. macOS executables are signed with an Apple Developer ID certificate and notarized by Apple. Windows executables have timestamped Authenticode signatures from Azure Artifact Signing. This enables verification of the release publisher and binary integrity, supports publisher-based allowlisting, and should reduce security warnings and antivirus false positives.

Breaking changes

• Update the default and latest Python versions for 3.15 (#28792)

  Ruff now defaults to Python 3.11 instead of 3.10 when no Python version is configured through target-version or requires-python. When checking for syntax errors without a configured Python version, Ruff now defaults to Python 3.15

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Commits

• 4683270 Bump version to 0.17.1 (#29420)
• 3514027 [ty] Update typing conformance suite pin (#29417)
• 8294556 Update referenced PR security-review workflow (#29237)
• d1e1b1f [ty] Preserve recursive aliases when rebuilding intersections (#29057)
• 9352615 [perflint] Avoid invalid comprehension suggestions (PERF401, PERF403) (...
• 83a3afc Fix dedent with multiple leading comments (#29382)
• b42a873 [ty] Clarify object attribute write-contract rationale (#29384)
• d01678e [ty] Clarify object attribute write-contract rationale (#29384)
• 355b42a [ty] Avoid writable override contracts from object (#29373)
• e26e6d2 [ty] Collect intersection inference through constraint relations (#28677)
• Additional commits viewable in compare view

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