计算一天内两个hh:mm变量之间的时间差

from datetime import datetime

def calculate_time_difference(time1, time2):
    # 将 hh:mm 格式转换为时间对象
    format_str = "%H:%M"
    datetime_obj1 = datetime.strptime(time1, format_str)
    datetime_obj2 = datetime.strptime(time2, format_str)
    
    # 计算时间差
    time_delta = datetime_obj2 - datetime_obj1
    
    # 获取时间间隔的小时、分钟、秒
    seconds = time_delta.total_seconds()
    hours = seconds // 3600
    minutes = (seconds % 3600) // 60
    seconds = seconds % 60
    
    # 返回时间差的字符串表示
    return "{:02}:{:02}:{:02}".format(int(hours), int(minutes), int(seconds))

# 示例用法
time1 = "08:30"
time2 = "18:45"
time_difference = calculate_time_difference(time1, time2)
print("时间差为：", time_difference)