Python Coding challenge - Day 832| What is the output of the following Python Code?

 Code Explanation:

Defining the Class

class Box:

This defines a new class called Box.

A class is a blueprint for creating objects (instances).

It can contain both data (variables) and behavior (methods).

b    count = 0

count is a class variable — shared among all instances of the class.

It’s initialized to 0.

Any change to Box.count affects all objects because it belongs to the class, not any single object.

Defining the Constructor (__init__ method)

    def __init__(self, v):

        self.v = v

        Box.count += v

The __init__ method runs automatically when you create a new Box object.

self.v = v creates an instance variable v, unique to each object.

Box.count += v adds the object’s v value to the class variable count.

This line updates the shared class variable every time a new box is created.

Creating First Object

a = Box(3)

This calls __init__ with v = 3.

Inside __init__:

self.v = 3

Box.count += 3 → Box.count = 0 + 3 = 3.

Creating Second Object

b = Box(5)

This calls __init__ again, with v = 5.

Inside __init__:

self.v = 5

Box.count += 5 → Box.count = 3 + 5 = 8.

Printing the Final Class Variable

print(Box.count)

This prints the final value of the class variable count.

After both objects are created, Box.count = 8.

Final Output

8

700 Days Python Coding Challenges with Explanation