Mdformat plugin to Blacken Python code blocks

mdformat-black is an mdformat plugin that makes mdformat format Python code blocks with Black.

Install with:

pip install mdformat-black

You may pin Black dependency for formatting stability:

pip install mdformat-black black==22.1.0

When using mdformat on the command line, Black formatting will be automatically enabled after install.

When using mdformat Python API, code formatting for Python will have to be enabled explicitly:

import mdformat

unformatted = "```python\n'''black converts quotes'''\n```\n"
formatted = mdformat.text(unformatted, codeformatters={"python"})
assert formatted == '```python\n"""black converts quotes"""\n```\n'

Add the following to your .pre-commit-config.yaml:

- repo: https://github.com/executablebooks/mdformat
  rev: 0.7.13  # Use the ref you want to point at
  hooks:
    - id: mdformat
      additional_dependencies:
        - mdformat-black
        - black==22.1.0  # Pinning black here is optional