def query_bar_history(self, req: HistoryRequest) -> Optional[List[BarData]]:
"""查询k线数据"""
# 初始化API
try:
api: TqApi = TqApi(auth=TqAuth(self.username, self.password))
except Exception:
traceback.print_exc()
return None
# 查询数据
# 888 主力：m
# 000 指数：i
if req.symbol.find("888") > 0 :
req.symbol = req.symbol.rstrip("888")
tq_symbol: str = f"KQ.m@{req.exchange.value}.{req.symbol}"
elif req.symbol.find("000") > 0:
req.symbol = req.symbol.rstrip("000")
tq_symbol: str = f"KQ.i@{req.exchange.value}.{req.symbol}"
else:
tq_symbol: str = f"{req.exchange.value}.{req.symbol}"
标签：vnpy,req,tqsdk,exchange,symbol,888,tq,合约,self From： https://www.cnblogs.com/kingkaixuan/p/17035406.html