如何从提醒时间查找前一小时和后一小时

import datetime

def find_previous_and_next_hour(reminder_time):
    # 转换为时间对象
    reminder_time_obj = datetime.datetime.strptime(reminder_time, "%Y-%m-%d %H:%M:%S")

    # 计算前一小时
    previous_hour = reminder_time_obj - datetime.timedelta(hours=1)

    # 计算后一小时
    next_hour = reminder_time_obj + datetime.timedelta(hours=1)

    # 格式化结果
    previous_hour_str = previous_hour.strftime("%Y-%m-%d %H:%M:%S")
    next_hour_str = next_hour.strftime("%Y-%m-%d %H:%M:%S")

    return previous_hour_str, next_hour_str

# 测试代码
reminder_time = "2022-01-01 12:30:00"
previous_hour, next_hour = find_previous_and_next_hour(reminder_time)
print("前一小时：", previous_hour)
print("后一小时：", next_hour)