Python Coding challenge - Day 1059| What is the output of the following Python Code?

 

Code Explanation:

🔹 1. Defining Class A

class A:

Creates a base class named A

Inherits from object by default

🔹 2. Defining a Method in Class A

def x(self): 

    return "method"

x is an instance method

Stored in the class namespace of A

Normally accessed as A().x() and returns "method"

📌 Important concept:

Methods are just attributes that happen to be callable.

🔹 3. Defining Class B (Inheritance)

class B(A):

B inherits from A

So B inherits method x from A initially

🔹 4. Defining a Class Attribute with the Same Name

x = "attribute"

This creates a class attribute named x in B

This overrides (shadows) A.x

B.x is now a string, not a method

📌 Even though A.x is a method, Python does not treat it specially —

it’s just another attribute name.

🔹 5. Creating an Object of Class B

B()

Creates an instance of class B

No instance attribute named x exists yet

🔹 6. Accessing B().x

print(B().x)

Attribute lookup order:

Instance dictionary (obj.__dict__) → ❌ no x

Class B → ✅ finds x = "attribute"

Stops lookup (parent A is never checked)

📌 Because B.x exists, A.x is ignored.

✅ Final Output

attribute

400 Days Python Coding Challenges with Explanation