def update(self, symbol, data):
        day = datetime.datetime.fromtimestamp(data[0]['time']).date()
        assert day == self.date
        self[symbol] = data
Returns the message storage on the request if it exists, otherwise returns
dataset/ETHPy150Open yinhm/datafeed/datafeed/datastore.py/Minute.update--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.4/django/contrib/messages/api.py/get_messages