Find the output of the following program:
Python3
L1 = [1, 2, 3, 4]
L2 = L1
L3 = L1.copy()
L4 = L1
L1[0] = [5]
print(L1, L2, L3, L4)
|
(A)
[5, 2, 3, 4] [5, 2, 3, 4] [1, 2, 3, 4] [1, 2, 3, 4]
(B)
[[5], 2, 3, 4] [[5], 2, 3, 4] [[5], 2, 3, 4] [1, 2, 3, 4]
(C)
[5, 2, 3, 4] [5, 2, 3, 4] [5, 2, 3, 4] [1, 2, 3, 4]
(D)
[[5], 2, 3, 4] [[5], 2, 3, 4] [1, 2, 3, 4] [[5], 2, 3, 4]
Answer: (D)
Explanation:
List L2 is the Shallow copy of L1, while L3 and L4 are Deep Copy(True Copy) of List L1. L1[0] = [5], implies that at index 0, list [5] will be present and not integer value 5.
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Last Updated :
17 Sep, 2020
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