23.9.0

23.9.0

Preview style

• More concise formatting for dummy implementations (#3796)
• In stub files, add a blank line between a statement with a body (e.g an
  if sys.version_info > (3, x):) and a function definition on the same level (#3862)
• Fix a bug whereby spaces were removed from walrus operators within subscript(#3823)

Configuration

• Black now applies exclusion and ignore logic before resolving symlinks (#3846)

Performance

• Avoid importing IPython if notebook cells do not contain magics (#3782)
• Improve caching by comparing file hashes as fallback for mtime and size (#3821)

Blackd

• Fix an issue in blackd with single character input (#3558)

Integrations

• Black now has an
  official pre-commit mirror. Swapping
  https://github.com/psf/black to https://github.com/psf/black-pre-commit-mirror in
  your .pre-commit-config.yaml will make Black about 2x faster (#3828)
• The .black.env folder specified by ENV_PATH will now be removed on the completion
  of the GitHub Action (#3759)