Python Coding challenge - Day 993| 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 will create objects that can be called like functions.

2. Initializing Instance State

    def __init__(self):

        self.n = 0

__init__ is the constructor.

It runs once when an object is created.

An instance variable n is created and initialized to 0.

3. Defining the __call__ Method

    def __call__(self):

        self.n += 1

        return self.n

__call__ makes the object callable.

Each time the object is called:

self.n is increased by 1

The updated value is returned

4. Creating an Object

c = Counter()

An object c of class Counter is created.

self.n is set to 0.

5. First Call: c()

c()

Python internally calls:

c.__call__()

self.n becomes 1

Returns 1

6. Second Call: c()

c()

self.n becomes 2

Returns 2

7. Third Call: c()

c()

self.n becomes 3

Returns 3

8. Printing the Results

print(c(), c(), c())

Prints the return values of the three calls.

9. Final Output

1 2 3

Final Answer

✔ Output:

1 2 3

400 Days Python Coding Challenges with Explanation