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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 parse_arguments(argv):
 """ Extract command-line arguments for different actions. """

    parser = argparse.ArgumentParser(description='seqmagick - Manipulate ' + \
       ' sequence files.', prog='seqmagick')

    parser.add_argument('-V', '--version', action='version',
            version='seqmagick v' + version,
            help="Print the version number and exit")
    parser.add_argument('-v', '--verbose', dest='verbosity',
            action='count', default=1,
            help="Be more verbose. Specify -vv or -vvv for even more")
    parser.add_argument('-q', '--quiet', action='store_const', const=0,
            dest='verbosity', help="Suppress output")

    # Subparsers
    subparsers = parser.add_subparsers(dest='subparser_name')

    parser_help = subparsers.add_parser('help',
            help='Detailed help for actions using help <action>')

    parser_help.add_argument('action')

    # Add actions
    actions = {}
    for name, mod in subcommands.itermodules():
        subparser = subparsers.add_parser(name, help=mod.__doc__,
                description=mod.__doc__)
        mod.build_parser(subparser)
        actions[name] = mod.action

    arguments = parser.parse_args(argv)
    arguments.argv = argv
    action = arguments.subparser_name

    if action == 'help':
        return parse_arguments([str(arguments.action), '-h'])

    return actions[action], arguments