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GO Classes DPP | GATE DA | Python Programming | Nested Lists

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3 3 votes

Consider the following Python code:

info = ["GO", [10, 20, [30, 40]], "DA"]

info[1][2][0] = info[1][2][0] + 5

print(info[1][2], info[1][1])

What is the output of the code above?

  1. [30, 40] 20
  2. [35, 40] 20
  3. [35, 45] 10
  4. [30, 45] 20

1 Answer

1 1 vote

The list contains another list inside it.

info = ["GO", [10, 20, [30, 40]], "DA"]

The expression $\texttt{info[1]}$ gives the inner list:

[10, 20, [30, 40]]

The expression $\texttt{info[1][2]}$ gives the nested list:

[30, 40]

The expression $\texttt{info[1][2][0]}$ gives $\texttt{30}$.

info[1][2][0] = 30 + 5 = 35

So $\texttt{info[1][2]}$ becomes $\texttt{[35, 40]}$.

Also, $\texttt{info[1][1]}$ is $\texttt{20}$.

Therefore, the output is:

[35, 40] 20

Correct Option: B

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