wiki_summary.py 文件源码

def create_optional_arguments(parser):
    """ Given a parser, create optional arguments."""

    parser.add_argument('-R', '--random', help='display n random wikipedia articles (1 <= n <= 10)',
                        type=int, choices=[i for i in range(1,11)])

    parser.add_argument('-r', '--read', help='display the specified summarized wikipedia article', type=str, nargs='+')

    parser.add_argument('-rf', '--forever', help='display a random article until the user types stop',
                        action="store_true")