v22.12.0

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Preview style

• Enforce empty lines before classes and functions with sticky leading comments (#​3302)
• Reformat empty and whitespace-only files as either an empty file (if no newline is
  present) or as a single newline character (if a newline is present) (#​3348)
• Implicitly concatenated strings used as function args are now wrapped inside
  parentheses (#​3307)
• For assignment statements, prefer splitting the right hand side if the left hand side
  fits on a single line (#​3368)
• Correctly handle trailing commas that are inside a line's leading non-nested parens
  (#​3370)

Configuration

• Fix incorrectly applied .gitignore rules by considering the .gitignore location
  and the relative path to the target file (#​3338)
• Fix incorrectly ignoring .gitignore presence when more than one source directory is
  specified (#​3336)

Parser

• Parsing support has been added for walruses inside generator expression that are
  passed as function args (for example,
  any(match := my_re.match(text) for text in texts)) (#​3327).

Integrations

• Vim plugin: Optionally allow using the system installation of Black via
  let g:black_use_virtualenv = 0(#​3309)

v22.10.0

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Highlights

• Runtime support for Python 3.6 has been removed. Formatting 3.6 code will still be
  supported until further notice.

Stable style

• Fix a crash when # fmt: on is used on a different block level than # fmt: off
  (#​3281)

Preview style

• Fix a crash when formatting some dicts with parenthesis-wrapped long string keys
  (#​3262)

Configuration

• .ipynb_checkpoints directories are now excluded by default (#​3293)
• Add --skip-source-first-line / -x option to ignore the first line of source code
  while formatting (#​3299)

Packaging

• Executables made with PyInstaller will no longer crash when formatting several files
  at once on macOS. Native x86-64 executables for macOS are available once again.
  (#​3275)
• Hatchling is now used as the build backend. This will not have any effect for users
  who install Black with its wheels from PyPI. (#​3233)
• Faster compiled wheels are now available for CPython 3.11 (#​3276)

Blackd

• Windows style (CRLF) newlines will be preserved (#​3257).

Integrations

• Vim plugin: add flag (g:black_preview) to enable/disable the preview style (#​3246)
• Update GitHub Action to support formatting of Jupyter Notebook files via a jupyter
  option (#​3282)
• Update GitHub Action to support use of version specifiers (e.g. <23) for Black
  version (#​3265)