How to use the nhentai.utils.generate_html function in nhentai

# nhentai options
    parser.add_option('--cookie', type='str', dest='cookie', action='store',
                      help='set cookie of nhentai to bypass Google recaptcha')

    try:
        sys.argv = [unicode(i.decode(sys.stdin.encoding)) for i in sys.argv]
        print()
    except (NameError, TypeError):
        pass
    except UnicodeDecodeError:
        exit(0)

    args, _ = parser.parse_args(sys.argv[1:])

    if args.html_viewer:
        generate_html()
        exit(0)

    if args.main_viewer and not args.id and not args.keyword and \
            not args.tag and not args.artist and not args.character and \
            not args.parody and not args.group and not args.language and not args.favorites:
        generate_main_html()
        exit(0)

    if os.path.exists(os.path.join(constant.NHENTAI_HOME, 'cookie')):
        with open(os.path.join(constant.NHENTAI_HOME, 'cookie'), 'r') as f:
            constant.COOKIE = f.read()

    if args.cookie:
        try:
            if not os.path.exists(constant.NHENTAI_HOME):
                os.mkdir(constant.NHENTAI_HOME)

default=False, help='save downloaded doujinshis, whose will be skipped if you re-download them')
    parser.add_option('--clean-download-history', action='store_true', default=False, dest='clean_download_history',
                      help='clean download history')

    try:
        sys.argv = [unicode(i.decode(sys.stdin.encoding)) for i in sys.argv]
        print()
    except (NameError, TypeError):
        pass
    except UnicodeDecodeError:
        exit(0)

    args, _ = parser.parse_args(sys.argv[1:])

    if args.html_viewer:
        generate_html()
        exit(0)

    if args.main_viewer and not args.id and not args.keyword and not args.favorites:
        generate_main_html()
        exit(0)

    if args.clean_download_history:
        with DB() as db:
            db.clean_all()

        logger.info('Download history cleaned.')
        exit(0)

    if os.path.exists(constant.NHENTAI_COOKIE):
        with open(constant.NHENTAI_COOKIE, 'r') as f:
            constant.COOKIE = f.read()

logger.info('Progress: %d / %d' % (i + 1, len(doujinshi_ids)))

    if not options.is_show:
        downloader = Downloader(path=options.output_dir, size=options.threads,
                                timeout=options.timeout, delay=options.delay)

        for doujinshi in doujinshi_list:

            doujinshi.downloader = downloader
            doujinshi.download()
            if options.is_save_download_history:
                with DB() as db:
                    db.add_one(doujinshi.id)

            if not options.is_nohtml and not options.is_cbz:
                generate_html(options.output_dir, doujinshi)
            elif options.is_cbz:
                generate_cbz(options.output_dir, doujinshi, options.rm_origin_dir)

        if options.main_viewer:
            generate_main_html(options.output_dir)

        if not platform.system() == 'Windows':
            logger.log(15, '🍻 All done.')
        else:
            logger.log(15, 'All done.')

    else:
        [doujinshi.show() for doujinshi in doujinshi_list]