builders.py 文件源码

def __init__(self, user, periods_back=30):
        self.user = user
        self.hour_series = range(0, 24)

        historical_data_points_quantity = periods_back

        end_date = timezone.now()

        # use pandas to generate a nifty index of timestamps, use timezone to remove warning signals
        self.date_series = pd.date_range(end=end_date, freq='D', periods=historical_data_points_quantity)

        # build a series that shows the impact of what supplements/events have on sleep
        self.sleep_impact_series = pd.Series(0, index=self.date_series)
        self.productivity_impact_series = pd.Series(0, index=self.date_series)

        self.sleep_series = self._get_random_sleep_series(self.date_series)

        # Create a cache here because creating many events is very slow on Production ...
        # so create a cache of commonly used Django objects and then create a bunch of events that
        # need this foreign key, so we can use bulk_create
        self.user_activities = {}
        self.supplements = {}