hi，I have not change the strategy. I have solved the problem by add these codes,thanks again!
with open("data.pkl","rb") as f:
self.datas = pickle.load(f)
for data in self.datas:
self.datasbyname[data._name] = data
hi，I have not change the strategy. I have solved the problem by add these codes,thanks again!
with open("data.pkl","rb") as f:
self.datas = pickle.load(f)
for data in self.datas:
self.datasbyname[data._name] = data
@tianjixuetu 
when i use get databyname() to order , this error happened , can you help me ? thanks!
when add thousands of stocks it will take hours to add and preload data, how can speed it up ? can we save the datas use pickle or other method ,next time when we use , just load it up.