Python Coding Challenge - Question with Answer (ID 210726)

Explanation:

Line 1: Create the First List

[1, 2]

Explanation

This creates a list containing two elements.

The elements are:

1

2

Current List

[1, 2]

Line 2: Create the Second List

[3]

Explanation

This creates a list with a single element.

The only element is 3.

Current List

[3]

Line 3: Repeat the Second List

[3] * 2

Explanation

The * operator repeats the entire list.

Since the multiplier is 2, the list is copied two times.

It does not multiply the number 3.

It duplicates the list.

Calculation

[3] * 2

↓

[3, 3]

Line 4: Concatenate the Lists

[1, 2] + [3, 3]

Explanation

The + operator joins (concatenates) two lists.

It appends every element of the second list after the first list.

No nesting occurs because both operands are lists.

Calculation

[1, 2] + [3, 3]

↓

[1, 2, 3, 3]

Line 5: Print the Result

print([1, 2, 3, 3])

Explanation

print() displays the final list on the screen.

Output

[1, 2, 3, 3]

Book: Python Functions in Depth — Writing Clean, Reusable, and Powerful Code