code: def define_options(address, port, tracker_url, base_url):
    '''
    :param address:
    :param port:
    :param tracker_url:
    :return:
    '''
    define("address", default=address)
    define("port", default=port)
    define("tracker_url", default=tracker_url)
    define("base_url", default=base_urlf define_options(address, port, tracker_url, base_url):
    '''
    :param address:
    :param port:
    :param tracker_url:
    :return:
    '''
    define("address", default=address)
    define("port", default=port)
    define("tracker_url", default=tracker_url)
    define("base_url", default=base_url)
docs: :param address:
    :param port:
    :param tracker_url:
    :return: