Python Coding challenge - Day 1131| What is the output of the following Python Code?

 

Code Explanation:

🔹 1. Base Class Definition

class A: 

    pass

✅ Explanation:

A class A is created.

pass means the class has no attributes or methods (empty class).

🔹 2. Derived Class (Inheritance)

class B(A): 

    pass

✅ Explanation:

Class B is created and inherits from class A.

This means:

B gets all properties of A.

B IS-A A (important concept in OOP).

🔹 3. Object Creation

obj = B()

✅ Explanation:

An object obj of class B is created.

So:

obj belongs to class B

But also indirectly belongs to class A (because of inheritance)

🔹 4. isinstance() Check

isinstance(obj, A)

✅ Explanation:

Checks if obj is:

An instance of class A OR

Any subclass of A

🔍 In this case:

obj is instance of B

B inherits from A

So:

True

🔹 5. type() Comparison

type(obj) == A

✅ Explanation:

type(obj) returns the exact class of the object.

Here:

type(obj) → B

So comparison becomes:

B == A  → False

🔹 6. Final Print Statement

print(isinstance(obj, A), type(obj) == A)

✅ Output:

True False

🎯 Final Output

True False

Book: 900 Days Python Coding Challenges with Explanation