def featVolumeDelta( dData, lLookback=30, b_human=False ):
    '''
    @summary: Calculate moving average
    @param dData: Dictionary of data to use
    @param lLookback: Number of days to use for MA
    @param b_human: if true return dataframe to plot
    @return: DataFrame array containing values
    '''
    
    dfVolume = dData['volume']
    
    dfRet = pand.rolling_mean(dfVolume, lLookback)
    dfRet /= dfVolume
        
    if b_human:
        for sym in dData['close']:
            x=dData['close'][sym][0]/1000
            dData['close'][sym]=dData['close'][sym]*x
        return dData['close']    
    return dfRet
dataset/ETHPy150Open QuantSoftware/QuantSoftwareToolkit/QSTK/qstkfeat/features.py/featVolumeDelta/swapped operands of `/`