Python Coding challenge - Day 874| What is the output of the following Python Code?

 

Code Explanation:

1. Class Definition

class Box:

You define a new class named Box, which will hold a value and provide a computed property.

2. Constructor Method

    def __init__(self, n):

        self._n = n

__init__ is the constructor that runs when an object is created.

It takes one argument n.

The value is stored in a protected attribute _n.

3. Property Decorator

    @property

    def value(self):

        return self._n * 2

Explanation:

@property converts the method value() into an attribute-like getter.

Accessing b.value now calls this method automatically.

It returns twice the stored number (_n * 2).

4. Creating an Object

b = Box(5)

Creates an instance of Box with _n = 5.

5. Printing the Property

print(b.value)

Accesses the property value.

Internally calls value() method.

It returns 5 * 2 = 10.

Final Output

10

400 Days Python Coding Challenges with Explanation