caltrain.py 文件源码

def _resolve_duration(start, end):
    """
    Resolves the duration between two times. Departure/arrival
    times that exceed 24 hours or cross a day boundary are correctly
    resolved.

    :param start: the time to resolve
    :type start: Stop
    :param end: the time to resolve
    :type end: Stop

    :returns: tuple of days and datetime.time
    """
    start_time = _BASE_DATE + timedelta(hours=start.departure.hour,
                                        minutes=start.departure.minute,
                                        seconds=start.departure.second,
                                        days=start.departure_day)
    end_time = _BASE_DATE + timedelta(hours=end.arrival.hour,
                                      minutes=end.arrival.minute,
                                      seconds=end.arrival.second,
                                      days=end.departure_day)
    return end_time - start_time