Python Coding Challenge - Question with Answer (ID 240926)

 

Explanation:

🟢 1. Create the List

x = [1, 2, 3]

A list is created with three elements:

Index:   0   1   2

         ↓   ↓   ↓

x =    [ 1,  2,  3 ]

🟡 2. x.pop(1)

x.pop(1)

pop(1) removes and returns the element at index 1.

Index 1 contains:

2

So:

x.pop(1) → 2

At the same time, the list changes:

Before: [1, 2, 3]

              ↑

           removed

After:  [1, 3]

🔵 3. x[-1]

Now Python evaluates:

x[-1]

Important: this happens after pop(1) has modified the list.

The list is now:

[1, 3]

-1 means the last element.

Therefore:

x[-1] → 3

🟠 4. Addition

The expression becomes:

2 + 3

Therefore:

5

🔴 5. print()

Finally:

print(5)

✅ Final Output

5

Book: Numerical Python for Astronomy and Astrophysics