NotImplementedError（）这是什么意思，事件探查器pyalgotrad

Question

我正在运行pyalgotrade的事件探查器。我使用的是自定义数据，当我使用默认的策略/谓词“BuyOnGap”运行它时，它可以工作；但是，当我尝试用一个简单的自定义策略运行它时，它会抛出错误：

Traceback (most recent call last):
  File "C:\Users\David\Desktop\Python\Coursera\Computational Finance\Week2\PyAlgoTrade\Bitfinex\FCT\FCT_single_event_test.py", line 43, in <module>
    main(True)
  File "C:\Users\David\Desktop\Python\Coursera\Computational Finance\Week2\PyAlgoTrade\Bitfinex\FCT\FCT_single_event_test.py", line 35, in main
    eventProfiler.run(feed, True)
  File "C:\Python27\lib\site-packages\pyalgotrade\eventprofiler.py", line 215, in run
    disp.run()
  File "C:\Python27\lib\site-packages\pyalgotrade\dispatcher.py", line 102, in run
    eof, eventsDispatched = self.__dispatch()
  File "C:\Python27\lib\site-packages\pyalgotrade\dispatcher.py", line 90, in __dispatch
    if self.__dispatchSubject(subject, smallestDateTime):
  File "C:\Python27\lib\site-packages\pyalgotrade\dispatcher.py", line 68, in __dispatchSubject
    ret = subject.dispatch() is True
  File "C:\Python27\lib\site-packages\pyalgotrade\feed\__init__.py", line 105, in dispatch
    self.__event.emit(dateTime, values)
  File "C:\Python27\lib\site-packages\pyalgotrade\observer.py", line 59, in emit
    handler(*args, **kwargs)
  File "C:\Python27\lib\site-packages\pyalgotrade\eventprofiler.py", line 172, in __onBars
    eventOccurred = self.__predicate.eventOccurred(instrument, self.__feed[instrument])
  File "C:\Python27\lib\site-packages\pyalgotrade\eventprofiler.py", line 89, in eventOccurred
    raise NotImplementedError()
NotImplementedError

我的代码是：

^{pr2}$

这个错误是什么意思？在

有人知道出了什么问题，怎么解决吗？在

以下是eventprofiler代码的链接：

http://pastebin.com/QD220VQb

作为奖励，有人知道我在哪里可以找到使用分析器的例子吗？pyalgotrade给出的其他示例，seen here

Answer 1

我想你只是在eventOccessed方法定义中犯了一个拼写错误

def eventOccoured( self, instrument, aBarDS):

应替换为

^{pr2}$