Python Coding challenge - Day 900| What is the output of the following Python Code?

 

Code Explanation:

1. Class Definition

class A:

Explanation:

Defines a class named A.

2. Class Variable

x = 10

Explanation:

This is a class variable.

It belongs to the class, not to any specific object.

It can be accessed using:

A.x

obj.x

3. Method Definition

def show(self):

Explanation:

show is an instance method.

self refers to the current object.

x = 20

Explanation:

This creates a local variable x inside the show() method.

This does NOT change:

the class variable x

or the object variable

This x = 20 exists only inside this method.

4. Object Creation

obj = A()

Explanation:

Creates an object obj of class A.

No instance variable x is created here.

The class variable x = 10 still exists.

5. Method Call

obj.show()

Explanation:

Calls the show() method.

Inside show():

x = 20 is created as a local variable

It is destroyed after the method finishes

It does NOT affect obj.x or A.x.

6. Print Statement

print(obj.x)

Explanation:

Since obj has no instance variable x, Python looks for:

Instance variable 

Class variable 

It finds:

A.x = 10

So it prints 10.

Final Output

10

400 Days Python Coding Challenges with Explanation