1 class Square:
2 def __init__(self, wh): #因为是正方形, 只取一条边的长度
3 if isinstance(wh,(int,float)):
4 self.wh = wh
5 else:
6 raise TypeError
7
8 def __add__(self, other):
9 self_area = self.wh * self.wh #计算self面积
10 other_area = other.wh * other.wh #计算other面积
11 return self_area + other_area #相加 x+y
12
13 def __sub__(self,other):
14 self_area = self.wh * self.wh #计算self面积
15 other_area = other.wh * other.wh #计算other面积
16 return self_area - other_area #相减 x-y
17
18 def __mul__(self,other):
19 self_area = self.wh * self.wh #计算self面积
20 other_area = other.wh * other.wh #计算other面积
21 return self_area * other_area #相乘 x*y
22
23 def __mod__(self,other):
24 self_area = self.wh * self.wh #计算self面积
25 other_area = other.wh * other.wh #计算other面积
26 return self_area % other_area #相除 x%y
27
28 s1 = Square(3)
29 s2 = Square(4)
