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Explanation To test whether two variables refer to the same object in memory, you should use the is operator. The is operator returns True if the two variables point to the same object in memory, and False otherwise. For example: a = [1, 2, 3] b = a c = [1, 2, 3] print(a is b) # True print(a is c) # False In this example, a and b refer to the same list object in memory, so a is b returns True. On the other hand, a and c refer to two separate list objects with the same values, so a is c returns False.
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