Python Coding challenge - Day 1055| What is the output of the following Python Code?

 

Code Explanation:

1. Defining the Class

class A:

This line defines a class named A.

Everything indented inside belongs to this class.

2. Class Variable

x = 5

x is a class variable.

It is shared by all objects of the class.

It belongs to the class itself, not to any single object.

3. Class Method Decorator

@classmethod

This decorator tells Python that the method works with the class, not an instance.

The method will receive the class as its first argument.

4. Defining the Class Method

def change(cls):

change is a class method.

cls refers to the class A (similar to how self refers to an object).

5. Modifying the Class Variable

cls.x += 1

Increases the value of the class variable x by 1.

Original value: 5

New value: 6

6. Calling the Class Method

A.change()

Calls the class method using the class name.

Inside the method, cls refers to A.

A.x is updated.

7. Printing the Class Variable

print(A.x)

Prints the current value of x from class A.

8. Final Output

6

400 Days Python Coding Challenges with Explanation