Python Tuple Question | Output MCQ | daily coding challenge | Day 10

  What Is the Output of This python Code?

Question :

x = (1, 2, 3)

x[0] = 5

print(x)

Options :

A) (5, 2, 3)

B) (1, 2, 3)

C) TypeError

D) Error

Correct answer :

C) TypeError

Exaplanation :

Step 1 - Creating a tuple

x = (1, 2, 3)

Here x is tuple containing three elements.

(1, 2, 3)

Index postions :

Index :   0   1   2

Value :   1   2   3

Step 2 - Trying to change a value

x[0] = 5

This line tries to change the value at index 0.

Python attempts to convert:

(1, 2, 3)

into 

(5, 2, 3)

Step 3 - Understanding Tuples

Tuples in python are immutable.

Immutable Means :

• Values cannot be changed
• Items cannot be added
• Items cannot be removed

So Python does not allow modifying tuple elements.

Step 4 - Python Raises an error

Because tuples cannot be modified python raises an error:

TypeError: 'tuple' object does not support item assignment

Final output :

TypeError

Key points :

• Lists are mutable (can be changed )
• Tuples are immutable (cannot be changed )
• Attempting to modify a tuple causes Type Error
• Tuples use ( ) Parentheses

Example :

list → [1,2,3]  ✓ change allowed

tuple → (1,2,3) ✗ change not allowed

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