class A:
    def __init__(self, x):
        self.x = x
    def __getattribute__(self, name):
        if name == '__add__':
            self.x *= 10
        return object.__getattribute__(self, name)
    def __add__(self, other):
        return self.x + other.x

a1 = A(2)
a2 = A(3) 
print(a1 + a2, a1.__add__(a2))