import time as t

class MyTimer():
    # 开始计时

    def start(self):
        self.start = t.localtime()
        print("计时开始...")

    # 停止计时
    def stop(self):
        self.stop = t.localtime()
        self._calc()
        print("计时结束...")

    # 内部方法，计算运行时间

    def _calc(self):
        self.lasted = []
        self.prompt = "总共运行了"
        for index in range(6):
            self.lasted.append(self.stop[index] - self.start[index])
            self.prompt += str(self.lasted[index])

