Python Coding Challenge - Question with Answer (ID -080426)

 

Explanation:

🔹 1. List Initialization

lst = [1, 2, 3]

A list named lst is created.

It contains three elements: 1, 2, 3.

👉 After this line:

lst = [1, 2, 3]

🔹 2. Using extend() Method

lst.extend([4, 5])

The extend() method adds elements of another list to the existing list.

It modifies the original list in-place (does NOT create a new list).

👉 After this operation:

lst = [1, 2, 3, 4, 5]

🔹 3. Return Value of extend()

Important point:

extend() returns None

It does NOT return the updated list

🔹 4. Print Statement

print(lst.extend([4, 5]))

First, lst.extend([4, 5]) executes:

List becomes: [1, 2, 3, 4, 5]

Then print() prints the return value of extend()

Which is: None

👉 Output:

None

🔹 5. Final State of List

Even though output is None, the list is updated:

print(lst)

👉 Output:

[1, 2, 3, 4, 5]

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