Im trying to use RSI in a stratey...always getting the same error:   Runtime Error: NameError : name 'RSI' is not defined

Same issue in the tutorial 200-50 EMA Momentum Universe , if I excange ExponentialMovingAverage with RSI  I get the same error

 

 

class SelectionData(): #3. Update the constructor to accept a history array def __init__(self,history): self.slow = RSI(200) self.fast = ExponentialMovingAverage(50) #4. Loop over the history data and update the indicators for bar in history.itertuples(): self.fast.Update(bar.Index[1], bar.close) self.slow.Update(bar.Index[1], bar.close) def is_ready(self): return self.slow.IsReady and self.fast.IsReady def update(self, time, price): self.fast.Update(time, price) self.slow.Update(time, price)

 

https://www.quantconnect.com/terminal/#task-158/Preparing-Indicators-with-History

 

 

 

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