Python Coding challenge - Day 430| What is the output of the following Python Code?

 

Line-by-Line Explanation

class Descriptor:

This defines a custom descriptor class. In Python, a descriptor is any object that implements at least one of the following methods:

__get__()

__set__()

__delete__()

Descriptors are typically used for custom attribute access logic.

def __get__(self, obj, objtype=None):

This defines the getter behavior for the descriptor.

self: the descriptor instance

obj: the instance of the class where the descriptor is accessed (e.g., MyClass() object)

objtype: the class type (usually not used unless needed)

return 42

Whenever the attribute is accessed, this method returns the constant 42.

 class MyClass:

A normal class where you're going to use the descriptor.

attr = Descriptor()

Here:

attr becomes a descriptor-managed attribute.

It's now an instance of Descriptor, so any access to MyClass().attr will trigger the __get__() method from Descriptor.

print(MyClass().attr)

Let’s unpack this:

MyClass() creates an instance of MyClass.

.attr is accessed on that instance.

Since attr is a descriptor, Python automatically calls:

Descriptor.__get__(self=attr, obj=MyClass(), objtype=MyClass)

And we know __get__() always returns 42.

Output:

42