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chore: Update Python dev dep: Bump black from 26.5.1 to 26.10.1 - #319

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dependabot/pip/black-26.10.1
Oct 29, 2026
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colindean merged 1 commit into
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dependabot/pip/black-26.10.1

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@dependabot dependabot Bot commented on behalf of github Oct 28, 2026 •

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Bumps 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

@dependabot dependabot Bot added dependencies Pull requests that update a dependency file python Pull requests that update Python code labels Oct 28, 2026
@github-actions

github-actions Bot commented Oct 28, 2026 •

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Detected 1 changes to dependencies in Poetry lockfile

From base 26e1160 to head e6e82b6:

Action Package Old version New version Upgrade type
Updated black 26.5.1 26.10.1 minor

(0 added, 0 removed, 1 updated, 37 not changed)

Generated by diff-poetry-lock 1.0.1.dev0

@colindean

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@dependabot rebase

@dependabot
dependabot Bot force-pushed the dependabot/pip/black-26.10.1 branch from c89d33c to 1723cd8 Compare October 29, 2026 18:01
@colindean

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@dependabot recreate

Bumps [black](https://github.com/psf/black) from 26.5.1 to 26.10.1.
- [Release notes](https://github.com/psf/black/releases)
- [Changelog](https://github.com/psf/black/blob/main/CHANGES.md)
- [Commits](psf/black@26.5.1...26.10.1)

---
updated-dependencies:
- dependency-name: black
  dependency-version: 26.10.1
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>
@dependabot
dependabot Bot force-pushed the dependabot/pip/black-26.10.1 branch from 1723cd8 to e6e82b6 Compare October 29, 2026 18:20
@colindean
colindean enabled auto-merge October 29, 2026 18:48

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Reviewed, mass approve

@colindean
colindean merged commit 17d02cc into main Oct 29, 2026
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@colindean
colindean deleted the dependabot/pip/black-26.10.1 branch October 29, 2026 18:50
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