Python Coding challenge - Day 872| What is the output of the following Python Code?

 

Code Explanation:

1. Class Definition

class Num:

This defines a new class called Num.

Each object represents a number stored in the attribute x.

The class includes operator overloading for *.

2. Constructor Method

    def __init__(self, x):

        self.x = x

__init__ is the constructor method in Python.

It is called automatically when a new object is created.

x is passed as a parameter and stored as an instance attribute self.x.

3. Operator Overloading (*)

    def __mul__(self, other):

        return Num(self.x + other.x)

__mul__ is a magic method that defines how the * operator works for Num objects.

self refers to the current object, and other refers to the second object in the operation.

Instead of normal multiplication, this method adds the x values of both objects.

It returns a new Num object with x = self.x + other.x.

4. Creating Object n1

n1 = Num(7)

Creates a Num object n1 with x = 7.

The constructor __init__ is called automatically.

5. Creating Object n2

n2 = Num(9)

Creates another Num object n2 with x = 9.

6. Using * Operator

print((n1 * n2).x)

n1 * n2 calls the __mul__ method.

Inside __mul__, it calculates n1.x + n2.x = 7 + 9 = 16.

Returns a new Num object with x = 16.

(n1 * n2).x accesses the x attribute of the new object.

Output:

16

400 Days Python Coding Challenges with Explanation