ak.match_main_contract(symbol="ine") 不支持ine

def match_main_contract(symbol: str = "cffex") -> str:
    """
    新浪财经-期货-主力合约
    https://vip.stock.finance.sina.com.cn/quotes_service/view/qihuohangqing.html#titlePos_1
    :param symbol: choice of {'czce', 'dce', 'shfe', 'cffex', 'gfex'}
    :type symbol: str
    :return: 主力合约的字符串
    :rtype: str
    """
    subscribe_exchange_list = []
    exchange_symbol_list = zh_subscribe_exchange_symbol(symbol).iloc[:, 1].tolist()
    for item in exchange_symbol_list:

不支持上海国际能源交易中心

交易所名称	交易所代码	合约后缀	首页地址
中国金融期货交易所	CFFEX	.CFX	http://www.cffex.com.cn
上海期货交易所	SHFE	.SHF	https://www.shfe.com.cn
上海国际能源交易中心	INE	.INE	https://www.ine.cn
郑州商品交易所	CZCE	.ZCE	http://www.czce.com.cn
大连商品交易所	DCE	.DCE	http://www.dce.com.cn
广州期货交易所	GFEX	.GFEX	http://www.gfex.com.cn

error code

aceback (most recent call last):
  File "/Users/will/doc/code/python/2.py", line 17, in <module>
    ak.match_main_contract(symbol="ine")
  File "/Users/will/doc/code/python/.venv/lib/python3.9/site-packages/akshare/futures/futures_zh_sina.py", line 181, in match_main_contract
    exchange_symbol_list = zh_subscribe_exchange_symbol(symbol).iloc[:, 1].tolist()
AttributeError: 'NoneType' object has no attribute 'iloc'

环境： macos python 3.9.6 akshare. == 1.14.93

akfamily / akshare

ak.match_main_contract(symbol="ine") 不支持ine #5229