Python Coding challenge - Day 1041| What is the output of the following Python Code?

 

Code Explanation:

1. Defining the Descriptor Class

class D:

Creates a class D

This class is intended to be a descriptor

🔹 2. Implementing the __get__ Method

def __get__(self, obj, objtype):

    return 100

__get__ makes D a descriptor

It is automatically called when the attribute is accessed

Parameters:

self → the descriptor object (D instance)

obj → the instance accessing the attribute (A()), or None if accessed via class

objtype → the owner class (A)

📌 This method always returns 100

🔹 3. Defining Class A

class A:

Creates a normal class A

🔹 4. Assigning the Descriptor to a Class Attribute

x = D()

x becomes a class attribute

Its value is an instance of D

Since D implements __get__, x is now a descriptor-managed attribute

🔹 5. Creating an Object of Class A

A()

Creates an instance of class A

No __init__ method is defined, so nothing else runs

🔹 6. Accessing the Descriptor Attribute

print(A().x)

What happens internally:

Python sees attribute access .x

Finds x in class A

Sees that x has a __get__ method

Calls:

D.__get__(x_descriptor, obj=A(), objtype=A)

__get__ returns 100

✅ Final Output

100