Python 时间差计算

def date_time_str_to_long(input_date_time_string):
    '''
    标准时间格式转10位时间戳，如：'2020-01-16 08:05:09' 转为 '1579133109'
    :param input_date_time_string: string类型，输入的标准时间，如：'2020-01-16 08:05:09'
    :return: 10位时间戳，如：'1579133109'
    '''
    # 字符类型的时间
    # input_date_time_string = '2013-03-06 08:05:09'
    # input_date_time_string = '2013-03-06 08:05:09'
    # 转为时间数组
    timeArray = time.strptime(input_date_time_string, "%Y-%m-%d %H:%M:%S")
    
    # 转为时间戳
    timeStamp = int(time.mktime(timeArray))
    print('标准时间={}，10位时间戳={}'.format(input_date_time_string, timeStamp))  # 1381419600
    
    return timeStamp
 
 
def date_time_long_to_str(timeStamp='1579133109', utc_time=0):
    '''
    将10位时间戳转为标准时间，如：'1579133109' 转为 '2020-01-16 08:05:09'
    :param timeStamp: string类型，输入的10位时间戳，如：'1579133109'
    :param utc_time: 选择是否输出为UTC时间，设置为1，则输出UTC时间，UTC时间=当前时间-8小时；默认为0，输出为非UTC时间
    :return: 标准时间，如：'2020-01-16 08:05:09'
    '''
    # # 使用datetime
    
    # dateArray = datetime.datetime.fromtimestamp(timeStamp)
    # otherStyleTime = dateArray.strftime("%Y-%m-%d %H:%M:%S")
    # print(otherStyleTime)  # 2013-10-10 23:40:00
    
    if utc_time == 0:
        # 使用time
        timeStamp = int(timeStamp)
        timeArray = time.localtime(timeStamp)
        otherStyleTime = time.strftime("%Y-%m-%d %H:%M:%S", timeArray)
        print('input_time={},output_StyleTime={}'.format(timeStamp, otherStyleTime))  # 2013-10-10 23:40:00
        
        return otherStyleTime
    else:
        # 使用datetime，指定utc时间，比现在时间少8小时
        import datetime
        dateArray = datetime.datetime.utcfromtimestamp(timeStamp)
        otherStyleTime_utc = dateArray.strftime("%Y-%m-%d %H:%M:%S")
        print('input_time={},output_StyleTime_utc={}'.format(timeStamp, otherStyleTime_utc))  # 2013-10-10 15:40:00
        return otherStyleTime_utc
 

def get_now_ISO_time_count(first_time_string,count_int=3600):
    #"2030-12-02T17:00:00+08:00"
 
    if first_time_string =='':
        print('初始时间不能为空，请确认...')
        return -1
 
    first_time_string=str(first_time_string).replace('T',' ').replace('+08:00','')
    print('first_time_string={}'.format(first_time_string))
 
    count_time=int(date_time_str_to_long(first_time_string))+int(count_int)
    count_str=str(date_time_long_to_str(count_time))
    result=count_str[0:10]+'T'+count_str[11:]+'+08:00'
    print("get_now_ISO_time_count_08={}".format(result))
    return str(result)

if __name__ == '__main__':
    print(get_now_ISO_time_count("2030-12-02T17:00:00+08:00", 10800))

def date_time_count(startTime, endTime):
    '''
    计算两个时间之间的差值，精确到秒
    :param startTime:
    :param endTime:
    :return:
    '''
    spent_times = int(date_time_str_to_long(endTime)) - int(date_time_str_to_long(startTime))
    print('endTime={},startTime={},时间差值={}'.format(endTime, startTime, spent_times))
    return spent_times

if __name__ == '__main__':
    print(date_time_count("2021-12-06 19:40:00","2021-12-09 14:26:40"))

def date_time_count_ms(startTime, endTime):
    '''
    计算两个时间之间的差值，可以精确到毫秒
    :param startTime:
    :param endTime:
    :return:
    '''
    # 输入时间格式
    # a = parse('2019-10-30 23:43:10.123')
    # b = parse("2019-10-28/09:08:13.56212")
    a = parse(str(endTime))
    b = parse(str(startTime))
    
    d_count = (a - b).days  # 获取天数的时间差
    s_count = (a - b).seconds  # 获取时间差中的秒数，也就是23:43:10到09:08:13，不包括前面的天数和秒后面的小数
    total_seconds = (a - b).total_seconds()  # 包括天数，小时，微秒等在内的所有秒数差
    microseconds = (a - b).microseconds  # 秒小数点后面的差值
    print('endTime={},startTime={},时间差值={}'.format(endTime, startTime, total_seconds))
    return total_seconds

if __name__ == '__main__':
    print(date_time_count_ms("2021-12-06 19:40:44.123","2021-12-08 14:26:40.567"))