Python Coding challenge - Day 852| What is the output of the following Python Code?

 

Code Explanation:

1. Defining Class A

class A:

You begin by creating a class named A.

This class contains a method that performs a simple calculation.

2. Defining the calc() Method in A

    def calc(self, x):

        return x + 1

A method named calc() is defined.

It takes two arguments:

self → refers to the object

x → the input number

The method returns x + 1.

Example: If x = 3 → returns 4.

3. Defining Class B That Inherits A

class B(A):

Class B is created.

It inherits from class A.

This means B automatically gets A’s calc() method, unless overridden.

4. Overriding calc() Inside Class B

    def calc(self, x):

        return super().calc(x) * 2

B provides its own version of calc(), overriding A’s version.

super().calc(x) calls the parent class A’s calc() method.

A’s calc() returns x + 1.

B then multiplies that result by 2.

So the logic becomes:

(super result) * 2= (x + 1) * 2

5. Creating an Object of Class B

obj = B()

An object of class B is created.

It uses B’s calc() method (overridden version).

6. Calling calc() With Argument 3

print(obj.calc(3))

Step-by-step evaluation:

B’s calc(3) is called

super().calc(3) → calls A’s calc(3) → returns 4

B multiplies result: 4 × 2 = 8

Print output: 8

Final Output: 8

400 Days Python Coding Challenges with Explanation