Python学习笔记（二十三）——小甲鱼第四十四讲

0、 import time as t   class Mytimer:     def __init__(self):         self.unit = ['年','月','天','小时','分钟','秒']         self.borrow = [0,12,31,24,60,60]         self.prompt = '未开始计时'         self.lasted

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