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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def main():
 # type: () -> typing.Any """Parse the command line options and launch the requested command. If the command is 'help' then print the help message for the subcommand; if no subcommand is given, print the standard help message. """

    colorama.init(wrap=six.PY3)
    doc = usage.get_primary_command_usage()
    allow_subcommands = '<command>' in doc
    args = docopt(doc, version=settings.version,
                  options_first=allow_subcommands)
    if sys.excepthook is sys.__excepthook__:
        sys.excepthook = log.excepthook
    try:
        log.enable_logging(log.get_log_level(args))
        default_args = sys.argv[2 if args.get('<command>') else 1:]
        if (args.get('<command>') == 'help' and
                None not in settings.subcommands):
            subcommand = next(iter(args.get('<args>', default_args)), None)
            return usage.get_help_usage(subcommand)
        argv = [args.get('<command>')] + args.get('<args>', default_args)
        return _run_command(argv)
    except exc.InvalidCliValueError as e:
        return str(e)