Python-Quizzes | Python Sets Quiz | Question 3

Question 3: What is the output of the following program?

set1 = {1, 2, 3}
set2 = set1.copy()
set2.add(4)
print(set1)

(A) {1, 2, 3, 4}
(B) {1, 2, 3}
(C) Invalid Syntax
(D) Error

Answer: (B)
Explanation: In the above piece of code, set2 is barely a copy and not an alias of set1. Hence any change made in set2 isn’t reflected in set1.
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