$ python black.py --help
Usage: black.py [OPTIONS]

Options:
  --line-length INTEGER           [default: 79]
  --skip-string-normalization / --no-skip-string-normalization
                                  [default: no-skip-string-normalization]
  --target-version [py37|py38|py39]
                                  [default: py37]
  --help                          Show this message and exit.
$ python black.py --skip-string-normalization
Settings(line_length=79, skip_string_normalization=True, target_version=<PyVersion.py37: '3.7'>)
