jdatetime.py 文件源码

def __add__(self, other):
        if not isinstance(other, timedelta):
            return NotImplemented

        delta = timedelta(self.toordinal(),
                          hours=self._hour,
                          minutes=self._minute,
                          seconds=self._second,
                          microseconds=self._microsecond)
        delta += other
        hour, rem = divmod(delta.seconds, 3600)
        minute, second = divmod(rem, 60)

        if 0 < delta.days <= _MAXORDINAL:
            return JalaliDateTime.combine(JalaliDate.fromordinal(delta.days),
                                          _time(hour, minute, second,
                                                delta.microseconds,
                                                tzinfo=self._tzinfo))

        raise OverflowError("result out of range")