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ValueError: The truth value of a Series is ambiguous.

Hi guys,

New to Python. I'm trying to run the following code but getting the ValueError: The truth value of a Series is ambiguous.

I've done some research and I understand that the error is occurring because of line "if current_price > high_price" and that I can't compare 2 panda series like that.

Could someone please enlighten me on how to correct this error?

Basic idea of the code is to compare the 20 day high/low to the current price. Thanks!

def rebalance(context,data):  
    #Return the 20 day high/low prices and current prices  
    high_price_history = data.history(, 'high' , bar_count=20 , frequency='1d')  
    low_price_history = data.history(, 'low' , bar_count=20 , frequency='1d')  

    current_price = data.current(, 'price')  
    high_price = high_price_history.max()  
    low_price = low_price_history.min()  
    if current_price > high_price:  
    elif current_price < low_price:  
1 response

The issue you might be having is from which you are passing into current_price. If is a list of sids, then current_price will return a Pandas Series, rather than a scalar value.

In this case where is a single symbol, your code works

Hope this helps,

Clone Algorithm
Backtest from to with initial capital
Total Returns
Max Drawdown
Benchmark Returns
Returns 1 Month 3 Month 6 Month 12 Month
Alpha 1 Month 3 Month 6 Month 12 Month
Beta 1 Month 3 Month 6 Month 12 Month
Sharpe 1 Month 3 Month 6 Month 12 Month
Sortino 1 Month 3 Month 6 Month 12 Month
Volatility 1 Month 3 Month 6 Month 12 Month
Max Drawdown 1 Month 3 Month 6 Month 12 Month
# Backtest ID: 5812fabc16bf000f20bbca38
There was a runtime error.

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