Python Coding challenge - Day 896| What is the output of the following Python Code?

 

Code Explanation:

1. Class Definition

class A:

This defines a class named A.

A class is a blueprint for creating objects.

Any object created from this class will follow its structure.

2. Constructor Method

    def __init__(self):

__init__ is the constructor.

It runs automatically when an object is created.

It is used to initialize object data.

3. Private Variable Creation

        self.__x = 5

__x is a private variable.

Python performs name mangling, converting:

__x → _A__x

This prevents direct access from outside the class.

The value 5 is safely stored inside the object.

4. Object Creation

a = A()

An object named a is created.

The constructor runs automatically.

Now internally the object contains:

a._A__x = 5

5. Checking Attribute Using hasattr()

print(hasattr(a, "__x"))

hasattr(object, "attribute") checks if the attribute exists.

Since __x was name-mangled to _A__x,

the exact name "__x" does not exist in the object.

So this returns:

False

Final Output

False

300 Days Python Coding Challenges with Explanation