[dependabot]

Updates the requirements on black, mypy, ruff and setuptools to permit the latest version.
Updates black from 26.5.1 to 26.10.1

Release notes

Sourced from black's releases.

26.10.1

Highlights

This release fixes a security issue in Black's bundled GitHub Action. Repositories that use the action are encouraged to update to the latest version of Black immediately. This update is received automatically when using psf/black@stable, and is independent of the version of Black installed by the action.

When the GitHub Action reads version specifiers from tool.black.required-version, it now only accepts released versions of Black, as it already did for black requirements in dependency lists. Other values, such as URL references, are now rejected. This issue has been registered as GHSA-cg8m-r9f2-5wm2; a CVE identifier is pending.

Stable style

• Fix a long Jupyter notebook assignment magic (for example x = !ls -la) being wrapped in parentheses, which IPython can no longer run; such cells are now left unchanged (#5481)
• Keep repeated lines outside the selected --line-ranges unchanged (#5436)
• Fix --line-ranges formatting lines that follow a statement when formatting joins or re-indents that statement (#5484)
• Fix --line-ranges crashing with an internal error when an unselected statement has a # fmt: skip comment on the last line before a closing bracket (#5477)
• Prevent moving an encoding declaration (for example # -*- coding: latin-1 -*-) onto the first two lines of a file (#5487)
• Fix adding an extra trailing blank line inside a multi-line module docstring when its last line is near the line length limit (#5494)

Preview style

• Do not split short expressions on delimiters (such as binary operators, comparisons, or comprehensions) inside brackets when preceded by a standalone comment (#5455)
• Fix the unstable string_processing feature removing backslash-newline sequences from raw strings, which changed their value (#5482)
• Avoid adding unnecessary parentheses around unbreakable right-hand side expressions in assignments (such as annotated assignments or subscript targets) (#5473)
• Parenthesize expressions with parameter comments when they exceed the line length under --preview (#5442)
• Fix wrap_long_dict_values_in_parens dropping the parentheses around a right-hand side that contains a dictionary, leaving a line over the length limit (#5492)
• Fix the unstable string_processing feature adding a space after * or ** in a PEP 695 type parameter (* Ts = ...) when it splits a string in the parameter's default (#5504)
• Avoid unnecessary line splits of trailers (such as indexing/subscripts) when an earlier bracket split exceeds the line length only due to a trailing comment (#5498)

Configuration

• Add --cache-dir to configure the cache directory from the command line (#5433)
• Don't cache a file as formatted after formatting or checking it with --line-ranges,

... (truncated)

Changelog

Sourced from black's changelog.

Version 26.10.1

Highlights

This release fixes a security issue in Black's bundled GitHub Action. Repositories that use the action are encouraged to update to the latest version of Black immediately. This update is received automatically when using psf/black@stable, and is independent of the version of Black installed by the action.

When the GitHub Action reads version specifiers from tool.black.required-version, it now only accepts released versions of Black, as it already did for black requirements in dependency lists. Other values, such as URL references, are now rejected. This issue has been registered as GHSA-cg8m-r9f2-5wm2; a CVE identifier is pending.

Stable style

• Fix a long Jupyter notebook assignment magic (for example x = !ls -la) being wrapped in parentheses, which IPython can no longer run; such cells are now left unchanged (#5481)
• Keep repeated lines outside the selected --line-ranges unchanged (#5436)
• Fix --line-ranges formatting lines that follow a statement when formatting joins or re-indents that statement (#5484)
• Fix --line-ranges crashing with an internal error when an unselected statement has a # fmt: skip comment on the last line before a closing bracket (#5477)
• Prevent moving an encoding declaration (for example # -*- coding: latin-1 -*-) onto the first two lines of a file (#5487)
• Fix adding an extra trailing blank line inside a multi-line module docstring when its last line is near the line length limit (#5494)
• Keep the parentheses around a walrus that is the only item in a set (for example {(x := f())}) when targeting Python 3.9 or older, since Python 3.8 and 3.9.0 can't parse it without them (#5502)

Preview style

• Do not split short expressions on delimiters (such as binary operators, comparisons, or comprehensions) inside brackets when preceded by a standalone comment (#5455)
• Fix the unstable string_processing feature removing backslash-newline sequences from raw strings, which changed their value (#5482)
• Avoid adding unnecessary parentheses around unbreakable right-hand side expressions in assignments (such as annotated assignments or subscript targets) (#5473)
• Parenthesize expressions with parameter comments when they exceed the line length under --preview (#5442)
• Fix wrap_long_dict_values_in_parens dropping the parentheses around a right-hand side that contains a dictionary, leaving a line over the length limit (#5492)
• Fix the unstable string_processing feature adding a space after * or ** in a PEP 695 type parameter (* Ts = ...) when it splits a string in the parameter's default (#5504)
• Avoid unnecessary line splits of trailers (such as indexing/subscripts) when an earlier bracket split exceeds the line length only due to a trailing comment (#5498)

... (truncated)

Commits

• 258e7db Prepare release 26.10.1 (#5511)
• ac1f715 Action: validate required-version better (#5510)
• fe241cc Avoid splitting trailers when earlier bracket split exceeds length due to com...
• 4fb2897 Bump actions/upload-artifact from 7.0.1 to 7.0.2 (#5500)
• 6d0f557 Bump actions/download-artifact from 8.0.1 to 8.0.2 (#5501)
• c45f21d Handle PEP 695 type parameter whitespace in whitespace() (#5504)
• 8ec61a7 Skip UTF-8 BOM when reading .gitignore (#5497)
• c9b1148 Fix module docstring last_line_length when docstring ends with newline (#5494)
• eb88358 Parenthesize expressions with parameter comments in preview (#3113) (#5442)
• 939fa93 Keep the parentheses around a right-hand side when a dict value's parentheses...
• Additional commits viewable in compare view

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 0.17.2

Release notes

Sourced from ruff's releases.

0.17.2

Release Notes

Released on 2026-10-22.

Preview features

• [complexity] Add unnecessary-regular-expression-compile (#25533)

Bug fixes

• Avoid syntax errors for type variables with starred constraints (UP040, UP046, UP047, RUF053) (#28362)
• [pydocstyle] Treat backslash-escaped *args and **kwargs as documented (D417) (#29536)
• [pylint] Avoid false positive on starred elements (PLE0643) (#29483)
• [pylint] Mark fixes unsafe when deleting comments (PLR5501, PLW0120) (#29414)
• [pyupgrade] Mark fix unsafe when deleting comments (UP035) (#29413)

Performance

• Avoid intermediate names in lint name resolution (#29506)
• Prefilter bidirectional Unicode checks by UTF-8 leading bytes (#29561)
• Share postfix parsing and reduce expression copies (#29480)

Configuration

• [pylint] Add a configurable allowlist for magic-value-comparison (PLR2004) (#18961)

Documentation

• Clarify documentation and correct stale guidance (#29374)
• [pyupgrade] Remove mentions of variance related to fix safety (UP040, UP047) (#29592)

Contributors

• @​fixfon
• @​MichaReiser
• @​zaniebot
• @​FrancescoPezzella
• @​anishgirianish
• @​rajveer3x
• @​charliermarsh
• @​LckyLike
• @​DaniBodor

Install ruff 0.17.2

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://releases.astral.sh/github/ruff/releases/download/0.17.2/ruff-installer.sh | sh
</tr></table> 

... (truncated)

Changelog

Sourced from ruff's changelog.

0.17.2

Released on 2026-10-22.

Preview features

• [complexity] Add unnecessary-regular-expression-compile (#25533)

Bug fixes

• Avoid syntax errors for type variables with starred constraints (UP040, UP046, UP047, RUF053) (#28362)
• [pydocstyle] Treat backslash-escaped *args and **kwargs as documented (D417) (#29536)
• [pylint] Avoid false positive on starred elements (PLE0643) (#29483)
• [pylint] Mark fixes unsafe when deleting comments (PLR5501, PLW0120) (#29414)
• [pyupgrade] Mark fix unsafe when deleting comments (UP035) (#29413)

Performance

• Avoid intermediate names in lint name resolution (#29506)
• Prefilter bidirectional Unicode checks by UTF-8 leading bytes (#29561)
• Share postfix parsing and reduce expression copies (#29480)

Configuration

• [pylint] Add a configurable allowlist for magic-value-comparison (PLR2004) (#18961)

Documentation

• Clarify documentation and correct stale guidance (#29374)
• [pyupgrade] Remove mentions of variance related to fix safety (UP040, UP047) (#29592)

Contributors

• @​fixfon
• @​MichaReiser
• @​zaniebot
• @​FrancescoPezzella
• @​anishgirianish
• @​rajveer3x
• @​charliermarsh
• @​LckyLike
• @​DaniBodor

0.17.1

Released on 2026-10-15.

Preview features

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

... (truncated)

Commits

• 30516b4 Bump version to 0.17.2 (#29637)
• 59a9e85 [ty] Generalize nested types in inferred return types (#29488)
• 0d562aa [ty] Check inherited attribute conflicts (#28559)
• 48dcdd0 [ty] Restrict range implications from gradual equivalence (#29577)
• 734d75a [ty] Check for unsatisfiable bodies before existentially quantifying (#29504)
• b0f9526 [ty] Preserve checks for recursive descriptor setter types (#29148)
• 32869b4 Avoid creating deployments for automation jobs (#29626)
• ec891ba Link the commit in pull request report footers (#29621)
• 8958748 [ty] Publish ecosystem reports from GitHub Actions (#29609)
• 01f5394 [ty] Publish typing conformance reports from GitHub Actions (#29608)
• Additional commits viewable in compare view

Updates setuptools to 84.2.1

Changelog

Sourced from setuptools's changelog.

v84.2.1

Bugfixes

• Changed wheel tags and stable-ABI validation to use sysconfig data. (#5360)
• Fixed unimportable extensions on free-threaded Python 3.13 and 3.14 when Extension.py_limited_api is enabled. These builds now use their version-specific extension suffix instead of using the unsupported .abi3t suffix. (#5363)

Improved Documentation

• Replaced broken link to Python Eggs documentation with an archived version from the Wayback Machine. (#1929)

v84.2.0

Features

• Added support for building abi3t extensions and abi3.abi3t wheels on Python 3.15 and newer. See :pep:803 and the Python 3.15 "What's New" entry <https://docs.python.org/3.15/whatsnew/3.15.html#pep-803-abi3t-stable-abi-for-free-threaded-builds>_ for more details. (#5193)
• Updated vendored packaging version to 26.3, which adds support for the abi3t tag from :pep:803. (#5361)

Bugfixes

• Use target sysconfig data for stable-ABI extension filenames. (#5351)

v84.1.0

Features

• setuptools.archive_util now raises the new UnsafeMember exception when an archive member would be extracted outside of the extraction directory, where previously such a member was silently skipped. Aborting makes a malicious or malformed archive visible to the caller instead of yielding a quietly incomplete extraction, and matches the behavior of the standard

... (truncated)

Commits

• 3895f98 Bump version: 84.2.0 → 84.2.1
• 7c5cb7a Merge pull request #5362 from jameshilliard/fix/abi3t-target-config
• 00595bf Use sysconfig data for wheel tags and stable-ABI validation
• 873b29c Merge pull request #5363 from ngoldbaum/fix-3.14t
• d8bc01b Merge pull request #5330 from Topgearfanboy/main
• e27271e Apply review comments from @​jameshillard
• aa98f85 add newsfragment
• 3301fa6 Avoid .abi3t extension suffixes on Python 3.13t and 3.14t
• 301e27a Bump version: 84.1.0 → 84.2.0
• 39a7c2e Merge pull request #5193 from ngoldbaum/abi3.abi3t
• Additional commits viewable in compare view

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