Python Coding challenge - Day 659| What is the output of the following Python Code?

 

Code Explanation:

1. Importing NumPy library

import numpy as np

Imports the NumPy library with the alias np, which provides support for arrays and mathematical operations.

2. Creating a NumPy array p

p = np.array([10, 20, 30])

Creates a NumPy array named p with elements [10, 20, 30].

3. Creating a copy of p and assigning it to q

q = p.copy()

Creates a new, independent copy of the array p.

q contains [10, 20, 30] but is stored separately in memory (no shared data with p).

4. Assigning r to reference the same array as q

r = q

Assigns r to reference the same object as q.

Both r and q point to the same array in memory.

5. Modifying the element at index 1 of r

r[1] = 99

Updates the value at index 1 in the array referenced by r to 99.

Because r and q share the same array, this change also affects q.

Now both q and r are [10, 99, 30].

p remains unchanged as [10, 20, 30].

6. Calculating and printing the total sum

print(np.sum(p) + np.sum(q) + np.sum(r))

Computes the sums of each array and adds them:

Sum of p = 10 + 20 + 30 = 60

Sum of q = 10 + 99 + 30 = 139

Sum of r = same as q = 139

Total sum = 60 + 139 + 139 = 338

Prints 338 to the console.

Output:

338

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