timestr_perday_by_range

import datetime
def get_timestr_perday_by_range(from_time,to_time):
    '''
        计算一段时间内 有多少天，以及每天的时间区间。如果起止时间超过1天，默认新增的一天会从 00:00:00到23:59:59
    :param from_time:
    :param to_time:
    :return:
    '''
    range_timestr_tuples = []
    # 计算两个时间的时间差
    d1 = datetime.datetime.strptime(from_time, date_format)
    d2 = datetime.datetime.strptime(to_time, date_format)
    day_count = 0
    # 3 day,7:08:23
    delta_daystr = str(d2 - d1)
    if "day"  in delta_daystr:
        delta_day = delta_daystr.split(" ")[0]
        day_count = int(delta_day)
    from_time_daystr = str(from_time).split(" ")[0].replace("-",".")
    end_time_daystr = str(to_time).split(" ")[0].replace("-",".")
    if day_count==0:
        # 确实没有跨天
        if from_time_daystr==end_time_daystr:
            one_tuple = (from_time_daystr,from_time,to_time)
            range_timestr_tuples.append(one_tuple)
        # 跨天了，但是不足24小时，需要补充两条时间段数据
        else:
            # 跨天的第一天 应该从开始时间到该天的截止时间
            from_day_endtime = from_time_daystr.replace(".", "-") + " 23:59:59"
            one_tuple = (from_time_daystr, from_time, from_day_endtime)
            range_timestr_tuples.append(one_tuple)
            # 跨天的最后一天 应该从 00:00:00到截止时间
            to_day_starttime = end_time_daystr.replace(".", "-") + " 00:00:00"
            one_tuple = (end_time_daystr, to_day_starttime, to_time)
            range_timestr_tuples.append(one_tuple)
    else:
        # 跨天的第一天 应该从开始时间到该天的截止时间
        from_day_endtime =  from_time_daystr.replace(".","-") + " 23:59:59"
        one_tuple = (from_time_daystr, from_time, from_day_endtime)
        range_timestr_tuples.append(one_tuple)
        # 跨天的每一天都是从 00:00:00到23:59:59
        for day_index in range(1,day_count +1 ):
            next_day = (datetime.datetime.strptime(from_time, date_format)+datetime.timedelta(days=day_index)).strftime(date_format)
            next_day_str = str(next_day).split(" ")[0]
            next_day_begin = next_day_str + " 00:00:00"
            next_day_end = next_day_str + " 23:59:59"
            # 注意 天日期是用点号分割，但是具体到秒的话用 `-` 分割
            next_day_str = next_day_str.replace("-",".")
            one_tuple = (next_day_str, next_day_begin, next_day_end)
            range_timestr_tuples.append(one_tuple)
        # 跨天的最后一天 应该从 00:00:00到截止时间
        to_day_starttime = end_time_daystr.replace(".","-") + " 00:00:00"
        one_tuple = (end_time_daystr, to_day_starttime, to_time)
        range_timestr_tuples.append(one_tuple)
    for tuple in range_timestr_tuples:
        print(tuple)
    return range_timestr_tuples