import copy
import timeit
 
class test1:
    def __init__(self, x):
        self.x = x
 
    def __add__(self, other):
        return test1(self.x + other.x)
 
class test2:
    def __init__(self, x):
        self.x = x
 
    def __add__(self, other):
        new = copy.deepcopy(self)
        new.x = new.x + other.x
        return new
 
print(timeit.timeit('x + y', 'x, y = test1(1), test1(2)', globals=globals(), number=10000))
print(timeit.timeit('x + y', 'x, y = test2(1), test2(2)', globals=globals(), number=10000))

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