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fix(deps): update pre-commit hook psf/black to v26

uis-devops-renovatebotrequested to merge
renovate/psf-black-26.x into main

This MR contains the following updates:

Package Type Update Change
psf/black repository major 25.12.0 → 26.1.0

Note: The pre-commit manager in Renovate is not supported by the pre-commit maintainers or community. Please do not report any problems there, instead create a Discussion in the Renovate repository if you have any questions.

Release Notes

psf/black (psf/black)

v26.1.0

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Highlights

Introduces the 2026 stable style (#​4892), stabilizing the following changes:

  • always_one_newline_after_import: Always force one blank line after import statements, except when the line after the import is a comment or an import statement (#​4489)
  • fix_fmt_skip_in_one_liners: Fix # fmt: skip behavior on one-liner declarations, such as def foo(): return "mock" # fmt: skip, where previously the declaration would have been incorrectly collapsed (#​4800)
  • fix_module_docstring_detection: Fix module docstrings being treated as normal strings if preceded by comments (#​4764)
  • fix_type_expansion_split: Fix type expansions split in generic functions (#​4777)
  • multiline_string_handling: Make expressions involving multiline strings more compact (#​1879)
  • normalize_cr_newlines: Add \r style newlines to the potential newlines to normalize file newlines both from and to (#​4710)
  • remove_parens_around_except_types: Remove parentheses around multiple exception types in except and except* without as (#​4720)
  • remove_parens_from_assignment_lhs: Remove unnecessary parentheses from the left-hand side of assignments while preserving magic trailing commas and intentional multiline formatting (#​4865)
  • standardize_type_comments: Format type comments which have zero or more spaces between # and type: or between type: and value to # type: (value) (#​4645)

The following change was not in any previous stable release:

  • Regenerated the _width_table.py and added tests for the Khmer language (#​4253)

This release alo bumps pathspec to v1 and fixes inconsistencies with Git's .gitignore logic (#​4958). Now, files will be ignored if a pattern matches them, even if the parent directory is directly unignored. For example, Black would previously format exclude/not_this/foo.py with this .gitignore:

exclude/
!exclude/not_this/

Now, exclude/not_this/foo.py will remain ignored. To ensure exclude/not_this/ and all of it's children are included in formatting (and in Git), use this .gitignore:

*/exclude/*
!*/exclude/not_this/

This new behavior matches Git. The leading */ are only necessary if you wish to ignore matching subdirectories (like the previous behavior did), and not just matching root directories.

Output
  • Explicitly shutdown the multiprocessing manager when run in diff mode too (#​4952)
Integrations
  • Upgraded PyPI upload workflow to use Trusted Publishing (#​4611)

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