Python Coding challenge - Day 926| What is the output of the following Python Code?

 

Code Explanation:

1. Defining the Class

class Counter:

A class named Counter is defined.

This class is used to keep track of a count that belongs to the class itself, not individual objects.

2. Declaring a Class Variable

    count = 0

count is a class variable.

Class variables are shared by all objects of the class.

Initially, count is set to 0.

3. Declaring a Class Method

    @classmethod

    def inc(cls):

        cls.count += 1

What does @classmethod mean?

@classmethod defines a method that receives the class itself as the first parameter (cls).

It is used when a method needs to read or modify class-level data.

Inside the method:

cls.count += 1 increases the class variable count by 1.

Since cls refers to the class (Counter), the change affects the class variable directly.

4. First Method Call

Counter.inc()

Calls the class method inc.

cls refers to Counter.

count changes from:

0 → 1

5. Second Method Call

Counter.inc()

Calls the class method again.

count changes from:

1 → 2

6. Printing the Class Variable

print(Counter.count)

Accesses the class variable count.

Since it was incremented twice, its value is now 2.

Final Output
2

800 Days Python Coding Challenges with Explanation