Python Coding Challenge - Question with Answer (ID -160426)

 

Code Explanation:

🔹 Step 1: Create Tuple

a = (1, [2, 3])

A tuple is created → (1, [2, 3])

Tuple is immutable ❌

But it contains a list [2, 3], which is mutable ✅

🔹 Step 2: Perform += Operation

a[1] += [4]

This line is the main trick 😈

👉 Python internally does:

Modify the list

Then try to assign it back

🔹 Step 2.1: List Gets Modified ✅

[2, 3] → [2, 3, 4]

This works because list is mutable

🔹 Step 2.2: Tuple Assignment Fails ❌

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

Python tries to reassign value inside tuple

❌ Not allowed → tuple is immutable

👉 So error occurs:

TypeError: 'tuple' object does not support item assignment

Final Output:

Error

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