black

A Python auto code formatter.

• Auto-format a file or entire directory:

black {path/to/file_or_directory}

• Format the code passed in as a string:

black -c "{code}"

• Output the changes that would be applied for each file:

black --diff {path/to/file_or_directory}

• Perform a dry run (print what would be done without actually doing it):

black --check {path/to/file_or_directory}

• Auto-format a file or directory emitting exclusively error messages to stderr:

black --quiet {path/to/file_or_directory}

• Auto-format a file or directory without replacing single quotes with double quotes (adoption helper, avoid using this for new projects):

black --skip-string-normalization {path/to/file_or_directory}

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