Python Coding challenge - Day 1129| What is the output of the following Python Code?

 

Code Explanation:

🔹 1. Class Definition

class Test:

✅ Explanation:

A class named Test is created.

This class will define how its objects are represented as strings.

🔹 2. __str__ Method

def __str__(self):

    return "STR"

✅ Explanation:

__str__ is a magic method used for user-friendly string representation.

It is called when:

print(obj)

str(obj)

Here, it returns:

"STR"

🔹 3. __repr__ Method

def __repr__(self):

    return "REPR"

✅ Explanation:

__repr__ is another magic method used for:

Debugging

Developer-friendly representation

It is called when:

You type obj in interpreter

Or when __str__ is not defined

🔹 4. Creating Object

obj = Test()

✅ Explanation:

An object obj of class Test is created.

No constructor (__init__) is defined, so default is used.

🔹 5. Printing Object

print(obj)

✅ What happens internally:

Python follows this priority:

Call __str__()

If not available → call __repr__()

🔍 In this case:

__str__ exists → used

So:

obj.__str__()

returns:

"STR"

🎯 Final Output

STR

Book: 900 Days Python Coding Challenges with Explanation