[英]not getting expected output- python classes
这是 output 我得到的代码如下:-4,-4
预期output:8,-4
class arthemetic():
def __init__(self,a):
self.a=a
self.b=a
def __add__(self, other):
self.a=self.b
self.a+=other.a
return self
def __sub__(self, other):
self.a = self.b
self.a-=other.a
return self
def __str__(self):
return str(self.a)
if __name__ =='__main__':
a =arthemetic(2)
b=arthemetic(6)
print(*map(str,[a+b,a-b]))
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