Python Coding challenge - Day 271| What is the output of the following Python Code?

 

Step-by-Step Explanation:

Line 1:

x = [1, 2, 3]

A list [1, 2, 3] is created and assigned to the variable x.

Line 2:

y = x

The variable y now points to the same list object as x. Both x and y reference the same memory location.

Line 3:

x = x + [4]

This creates a new list by concatenating [1, 2, 3] (the value of x) with [4].

The new list [1, 2, 3, 4] is assigned to x.

Now x references the new list [1, 2, 3, 4], while y still references the original list [1, 2, 3].

Line 4:

print(y)

Since y still points to the original list, the output is [1, 2, 3].

Output:

[1, 2, 3]