def _getYahooData(self, startDate=(2007,1,1)):
        data = {}        
        for symbol in self.symbols:
            print 'Downloading %s' % symbol
            data[symbol]=(getHistoricData(symbol,startDate)['adj_close'] )
           
        self.histClose = DataFrame(data).dropna()
Function for determening which emitter to use
dataset/ETHPy150Open cmorgan/trading-with-python/lib/classes.py/Spread._getYahooData--crossover with--dataset/ETHPy150Open dgraziotin/dycapo/piston/resource.py/Resource.determine_emitter