python用命令行格式写的程序，怎么在程序内部传参数来debug？

Question

 parser = argparse.ArgumentParser()
        parser.add_argument('-k', '--keywords', help='delimited list input', type=str, required=False)
        parser.add_argument('-kf', '--keywords_from_file', help='extract list of keywords from a text file', type=str, required=False)
        parser.add_argument('-sk', '--suffix_keywords', help='comma separated additional words added after to main keyword', type=str, required=False)
        parser.add_argument('-pk', '--prefix_keywords', help='comma separated additional words added before main keyword', type=str, required=False)
        parser.add_argument('-l', '--limit', help='delimited list input', type=str, required=False)

这种程序，想在程序内部传参，怎么操作？