Python Coding challenge - Day 253 | What is the output of the following Python Code?

 

Explanation

Line 1: 

x = [1, 2, 3]

This line creates a list x with the elements [1, 2, 3].

The list x is stored in memory and contains the values [1, 2, 3].

Line 2: 

y = x.copy()

This line creates a shallow copy of the list x and assigns it to the variable y.

The copy() method creates a new list that contains the same elements as x, but y and x are two separate lists in memory.

At this point, both x and y have the same elements [1, 2, 3], but they are independent of each other.

Line 3: 

y[0] = 0

This line changes the first element (index 0) of the list y to 0.

After this operation, y becomes [0, 2, 3].

Importantly, x is not affected because x and y are separate lists (since y is a copy of x, modifying y will not change x).

Line 4:

 print(x)

This line prints the contents of x.

Since x was not modified (because the modification happened to y), the original list x remains [1, 2, 3].

Therefore, the output will be [1, 2, 3].

Final Output:

The output of the code is:

[1, 2, 3]