如何将时间四舍五入到下一刻钟？

import datetime

def round_to_quarter(time):
    minutes = time.minute
    remainder = minutes % 15
    if remainder <= 7:
        rounded_minutes = minutes - remainder
    else:
        rounded_minutes = minutes + (15 - remainder)
    
    rounded_time = time.replace(minute=rounded_minutes)
    
    if rounded_time.minute == 60:
        rounded_time = rounded_time.replace(hour=rounded_time.hour+1, minute=0)
    
    return rounded_time

current_time = datetime.datetime.now()
rounded_time = round_to_quarter(current_time)
print("当前时间：", current_time.strftime("%Y-%m-%d %H:%M"))
print("四舍五入后的时间：", rounded_time.strftime("%Y-%m-%d %H:%M"))