Python Coding Challenge - Question with Answer (ID -120426)

 

Explanation:

🔹 Step 1: Create Tuple

a = (1, 2, [3, 4])

A tuple is created

Tuples are immutable (cannot be changed directly)

But inside it, there is a list [3, 4], which is mutable

👉 Memory:

a → (1, 2, [3, 4])

🔹 Step 2: Perform += Operation

a[2] += [5]

This is where the trick happens 😈

👉 Internally, Python does two things:

Modify the list:

[3, 4] → [3, 4, 5]

Try to assign it back:

a[2] = updated_list

⚠️ Important Twist

Step 1 (list modification) ✅ happens successfully

Step 2 (tuple assignment) ❌ fails

👉 Because:

Tuples do not allow item assignment

🔥 Result

Python throws an error:

TypeError: 'tuple' object does not support item assignment

Final Output:

Error

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