black

A Python auto code formatter.

TLDR

Auto-format a file or entire directory

$ black [path/to/file_or_directory]
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Format the code passed in as a string

$ black -c [path/to/file_or_directory]
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Output a diff for each file on stdout

$ black --diff [path/to/file_or_directory]
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Return the status without writing the files back

$ black --check [path/to/file_or_directory]
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Auto-format a file or directory emitting exclusively error messages to stderr

$ black --quiet [path/to/file_or_directory]
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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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