about tablib in Zipline

[forexblog]

Dear all,

In quantopian the following code, How should to workable in zipline?

I suffer expected type error on this line :     M      = prices.apply(talib.SMA,timeperiod = 88).iloc[-1]

any suggestion will appreciate.

    

def handle_entry (context,data):

    

    prices = history(bar_count=200, frequency='1d', field='price')

    M      = prices.apply(talib.SMA,timeperiod = 88).iloc[-1]

[forexblog]

my error message like following:

TypeError: ("Argument 'real' has incorrect type (expected numpy.ndarray, got Series)", u'occurred at index SPY')

forexblog於 2015年5月16日星期六 UTC+8上午10時53分48秒寫道：