Python Coding challenge - Day 865| What is the output of the following Python Code?

 

Code Explanation:

1. Class Definition

class Num:

A new class named Num is created.

Objects of this class will store a numeric value and define how they should be printed.

2. Constructor Method

    def __init__(self, x):

        self.x = x

__init__ is the constructor, automatically called when an object is created.

It takes the parameter x and assigns it to an instance variable self.x.

So every Num object stores a number.

3. Defining __repr__ Method

    def __repr__(self):

        return f"Value={self.x}"

__repr__ is a magic method that defines how an object should look when printed or displayed.

It returns the string Value=<number>.

Example: If self.x = 7, it returns "Value=7".

4. Creating an Object

n = Num(7)

This creates a Num object with x = 7.

Internally: n.x = 7.

5. Printing the Object

print(n)

When printing an object, Python automatically calls the __repr__ method.

This returns "Value=7".

So the final printed output is:

Final Output

Value=7

700 Days Python Coding Challenges with Explanation