black/docs/integrations/source_version_control.md

Version control integration

Use pre-commit. Once you have it installed, add this to the .pre-commit-config.yaml in your repository:

repos:
  - repo: https://github.com/psf/black
    rev: 23.7.0
    hooks:
      - id: black
        # It is recommended to specify the latest version of Python
        # supported by your project here, or alternatively use
        # pre-commit's default_language_version, see
        # https://pre-commit.com/#top_level-default_language_version
        language_version: python3.11

Feel free to switch out the rev value to something else, like another tag/version or even a specific commit. Although we discourage the use of branches or other mutable refs since the hook won't auto update as you may expect.

Jupyter Notebooks

There is an alternate hook black-jupyter that expands the targets of black to include Jupyter Notebooks. To use this hook, simply replace the hook's id: black with id: black-jupyter in the .pre-commit-config.yaml:

repos:
  - repo: https://github.com/psf/black
    rev: 23.7.0
    hooks:
      - id: black-jupyter
        # It is recommended to specify the latest version of Python
        # supported by your project here, or alternatively use
        # pre-commit's default_language_version, see
        # https://pre-commit.com/#top_level-default_language_version
        language_version: python3.11

The `black-jupyter` hook became available in version 21.8b0.