做回测时,backtesting.py下的run_backtesting()中的self.callback(data)报的错误是'NoneType' object is not callable,看了下,self.callback是None,所以出现这种错误,请问该怎么解决?数据加载一切正常。
2019-07-29 10:42:27.324261 开始加载历史数据
2019-07-29 10:42:27.825920 加载进度:## [25%]
2019-07-29 10:42:28.223002 加载进度:##### [50%]
2019-07-29 10:42:28.639646 加载进度:####### [76%]
2019-07-29 10:42:28.640643 加载进度:########## [100%]
2019-07-29 10:42:28.640643 历史数据加载完成,数据量:19545
None
TypeError Traceback (most recent call last)
<ipython-input-1-a71490e5e15d> in <module>
22
23 his_data=engine.load_data()
---> 24 engine.run_backtesting()
25 df = engine.calculate_result()
26 engine.calculate_statistics()
c:\vnstudio\lib\site-packages\vnpy\app\cta_strategy\backtesting.py in run_backtesting(self)
280 print(self.callback)
281 self.datetime = data.datetime
--> 282 self.callback(data)
283
284 self.strategy.inited = True
TypeError: 'NoneType' object is not callable