减去两个日期和时间，得出后一个值是否超过2小时

import datetime

def check_time_difference(start_time, end_time):
    # 将日期和时间转换成datetime对象
    start = datetime.datetime.strptime(start_time, "%Y-%m-%d %H:%M:%S")
    end = datetime.datetime.strptime(end_time, "%Y-%m-%d %H:%M:%S")
    
    # 计算时间差
    time_difference = end - start
    
    # 判断时间差是否超过2小时
    if time_difference.total_seconds() > 2 * 3600:
        return "时间差超过2小时"
    else:
        return "时间差未超过2小时"

# 示例输入
start_time = "2022-01-01 12:00:00"
end_time = "2022-01-01 14:30:00"

# 调用函数检查时间差
result = check_time_difference(start_time, end_time)
print(result)