求解为什么我的str函数不能打印出return的值

cookies945

Traceback (most recent call last):
  File "C:\Users\945\Desktop\MyTimer.py", line 3, in <module>
    class MyTimer():
  File "C:\Users\945\Desktop\MyTimer.py", line 7, in MyTimer
    __repr__==__str__
NameError: name '__repr__' is not defined
>>> 
================== RESTART: C:\Users\945\Desktop\MyTimer.py ==================
>>> t1 = MyTimer
>>> t1
<class '__main__.MyTimer'>
>>> print(t1)
<class '__main__.MyTimer'>
>>> print(t1)
<class '__main__.MyTimer'>
>>> 

以上为报错

import time as t

class MyTimer():
    def __str__(self):
        return self.info
    
    def __init__():
        self.info = '请先调用start()开始计时'
        self.begin = 0
        self.end = 0
        self.unit = ['年','月','天','小时','分','秒']
    
    def start(self):
        self.begin = t.localtime()
        self.info = '请调用stop()停止计时'
        print("计时开始")

    def stop(self):
        if not self.begin:
            print("请先调用start()开始计时")
        else:
            self.end = t.localtime()
            print("计时结束")
            self._calc()
    def _calc(self):
        self.leasted = []
        for index in range(6):
            self.leasted.append(self.end[index] - self.begin[index])
        self.info = "总共运行了" + str(self.leasted[index]) + self.unit[index]
        print(self.info)
            

这个是我写的代码

cookies945

是我没有在__init__的括号里加self