Python Coding challenge - Day 873| What is the output of the following Python Code?

 

Code Explanation:

1. Class Definition

class Counter:

A class named Counter is created.

It will contain a class variable and a class method.

2. Class Variable

    count = 1

count is a class variable, meaning it is shared by all objects of the class.

Initially set to 1.

3. Class Method Definition

    @classmethod

    def inc(cls):

        cls.count += 2

@classmethod

The decorator @classmethod defines a method that works on the class itself, not on an instance.

inc(cls)

cls refers to the class (not an object).

Inside the method, it modifies the class variable:

cls.count += 2

Every time inc() is called, it increases count by 2.

4. Calling the Class Method – First Call

Counter.inc()

Calls the class method directly using the class name.

count increases from 1 → 3.

5. Calling the Class Method – Second Call

Counter.inc()

Called again.

count increases from 3 → 5.

6. Printing the Final Count

print(Counter.count)

Prints the final value of the class variable count.

Output:

5

Final Output

5

600 Days Python Coding Challenges with Explanation