Python Coding challenge - Day 1137| What is the output of the following Python Code?

 

Code Explanation:

🔹 1. Class Definition

class Test:

Defines a class named Test.

This class will be used to create objects.

🔹 2. Special Method __bool__

def __bool__(self):

    return False

__bool__ is a special (magic) method in Python.

It controls how an object behaves in a Boolean context (like if, while, etc.).

Here, it always returns False.

That means any object of this class will be treated as False in conditions.

🔹 3. Creating an Object

obj = Test()

Creates an instance of the class Test.

Now obj is an object of class Test.

🔹 4. Using Object in Condition

if obj:

Python checks whether obj is True or False.

Since Test has __bool__, Python calls:

obj.__bool__()

This returns False.

🔹 5. If Block

print("YES")

This will run only if the condition is True.

But here the condition is False, so this line is skipped.

🔹 6. Else Block

print("NO")

Since the condition is False, this block executes.

So "NO" gets printed.

🔹 Final Output

NO

Book:  700 Days Python Coding Challenges with Explanation