8000根历史数据获得为何想获利bid_volume1,ask_volume1失败

用以下语句可以成功的获得c,o,h,l.但同样都是浮点型想增加获取bid_volume1等字段为何失败显示:  File “Collect VOLs.py”, line 34, in <module>

quotesC=ks[s][i][“bid_price1”]

KeyError: ‘bid_price1’

api.wait_update()

if api.is_changing(ks[s][i], ‘close’):

while i<=-1:

for s in SYMS:

quotesC=ks[s][i][“close”]

quotesO=ks[s][i][“open”]