Python_小练习：加减乘除的简单封装

小练习

写一个类，有四个方法，能够实现2个数字的加减乘除

class ComputeTwoNumbers:
    def __init__(self,a,b):
        self.a = a
        self.b = b

    def sum(self):
        return self.a+self.b

    def sub(self):
        return self.a-self.b

    def mul(self):
        return self.a*self.b

    def div(self):
        return self.a/self.b

c = ComputeTwoNumbers(4,2)
print(c.sum())
print(c.sub())
print(c.mul())
print(c.div())