Black 25.11.0

Highlights

• Enable base 3.14 support (#4804)
• Add support for the new Python 3.14 t-string syntax introduced by PEP 750 (#4805)

Stable style

• Fix bug where comments between # fmt: off and # fmt: on were reformatted (#4811)
• Comments containing fmt directives now preserve their exact formatting instead of being normalized (#4811)

Preview style

• Move multiline_string_handling from --unstable to --preview (#4760)
• Fix bug where module docstrings would be treated as normal strings if preceded by comments (#4764)
• Fix bug where python 3.12 generics syntax split line happens weirdly (#4777)
• Standardize type comments to form # type: <value> (#4645)
• Fix fix_fmt_skip_in_one_liners preview feature to respect # fmt: skip for compound statements with semicolon-separated bodies (#4800)

Configuration

• Add no_cache option to control caching behavior. (#4803)

Packaging

• Releases now include arm64 Linux binaries (#4773)

Output

• Write unchanged content to stdout when excluding formatting from stdin using pipes (#4610)

Blackd

• Implemented BlackDClient. This simple python client allows to easily send formatting requests to blackd (#4774)

Integrations

• Enable 3.14 base CI (#4804)
• Enhance GitHub Action psf/black to support the required-version major-version-only "stability" format when using pyproject.toml (#4770)
• Improve error message for vim plugin users. It now handles independently vim version
• Vim: Warn on unsupported Vim and Python versions independently (#4772)
• Vim: Print the import paths when importing black fails (#4675)
• Vim: Fix handling of virtualenvs that have a different Python version (#4675)