Function docopt

preprocessor/docopt.py:490–581

Parse `argv` based on command-line interface described in `doc`. `docopt` creates your command-line interface based on its description that you pass as `doc`. Such description can contain --options, , commands, which could be [optional], (required), (mutually |

(doc, argv=None, help=True, version=None, options_first=False)

def docopt(doc, argv=None, help=True, version=None, options_first=False):
    """Parse `argv` based on command-line interface described in `doc`.

    `docopt` creates your command-line interface based on its
    description that you pass as `doc`. Such description can contain
    --options, <positional-argument>, commands, which could be
    [optional], (required), (mutually | exclusive) or repeated...

    Parameters
    ----------
    doc : str
        Description of your command-line interface.
    argv : list of str, optional
        Argument vector to be parsed. sys.argv[1:] is used if not
        provided.
    help : bool (default: True)
        Set to False to disable automatic help on -h or --help
        options.
    version : any object
        If passed, the object will be printed if --version is in
        `argv`.
    options_first : bool (default: False)
        Set to True to require options precede positional arguments,
        i.e. to forbid options and positional arguments intermix.

    Returns
    -------
    args : dict
        A dictionary, where keys are names of command-line elements
        such as e.g. "--verbose" and "<path>", and values are the
        parsed values of those elements.

    Example
    -------
    >>> from docopt import docopt
    >>> doc = ''&#x27;
    ... Usage:
    ...     my_program tcp <host> <port> [--timeout=<seconds>]
    ...     my_program serial <port> [--baud=<n>] [--timeout=<seconds>]
    ...     my_program (-h | --help | --version)
    ...
    ... Options:
    ...     -h, --help  Show this screen and exit.
    ...     --baud=<n>  Baudrate [default: 9600]
    ... ''&#x27;
    >>> argv = ['tcp', '127.0.0.1', '80', '--timeout', '30']
    >>> docopt(doc, argv)
    {'--baud': '9600',
     '--help': False,
     '--timeout': '30',
     '--version': False,
     '<host>': '127.0.0.1',
     '<port>': '80',
     'serial': False,
     'tcp': True}

    See also
    --------