Python Coding challenge - Day 1045| What is the output of the following Python Code?

 

Code Explanation:

1. Defining the Class

class A:

Creates a class named A

By default, it inherits from object

🔹 2. Defining a Method in the Class

def f(self):

    return 1

f is an instance method

When called normally, it returns 1

Stored in the class namespace, not inside objects

🔹 3. Creating an Object of the Class

a = A()

Creates an instance a

At this point:

a does not have its own f

Method f is accessed from the class

🔹 4. Assigning a New Attribute to the Instance

a.f = lambda: 5

Creates an instance attribute named f

This overrides (shadows) the class method f

lambda: 5 is a function that returns 5

Stored in a.__dict__

📌 Important:

Instance attributes have higher priority than class attributes.

🔹 5. Calling a.f()

print(a.f())

Attribute lookup order:

Python checks a.__dict__ → finds f

Class method A.f is ignored

Calls the lambda function

Lambda returns 5

✅ Final Output

5

400 Days Python Coding Challenges with Explanation