schedule.py 文件源码

def intervalStart(self, when=0):
        """Get the start time of the interval that contains **when**.

        :param int when: The time which we're trying to determine the start of
            interval that contains it. This should be given in Unix seconds,
            for example, taken from :func:`calendar.timegm`.
        :rtype: int
        :returns: The Unix epoch timestamp for the start time of the interval
            that contains **when**.
        """
        # Convert `when`s which are floats, i.e. from time.time(), to ints:
        when = int(math.ceil(when))

        if self.intervalPeriod == 'month':
            # For months, we always start at the beginning of the month.
            date = fromUnixSeconds(when)
            months = (date.year * 12) + (date.month - 1)
            months -= (months % self.intervalCount)
            month = months % 12 + 1
            return toUnixSeconds((months // 12, month, 1, 0, 0, 0))
        elif self.intervalPeriod == 'day':
            # For days, we start at the beginning of a day.
            when -= when % (86400 * self.intervalCount)
            return when
        elif self.intervalPeriod == 'hour':
            # For hours, we start at the beginning of an hour.
            when -= when % (3600 * self.intervalCount)
            return when
        elif self.intervalPeriod == 'minute':
            when -= when % (60 * self.intervalCount)
            return when
        elif self.intervalPeriod == 'second':
            when -= when % self.intervalCount
            return when