Python Coding challenge - Day 888| What is the output of the following Python Code?

 

Code Explanation:

1. Class Definition

class Item:

This defines a new class called Item.

Classes are blueprints for objects, which can have attributes and methods.

2. Constructor Method

    def __init__(self, p):

        self._price = p

__init__ is the constructor, called automatically when a new object is created.

p is passed as a parameter when creating the object.

self._price = p stores the price in a protected attribute _price.

By convention, a single underscore _ indicates that this attribute should not be accessed directly outside the class.

3. Property Decorator

    @property

    def price(self):

        return self._price + 20

@property turns the price() method into a read-only attribute.

When you access i.price, it automatically calls this method.

The method returns _price plus 20, effectively adding a fixed markup to the price.

Benefit: You can compute or validate values dynamically while keeping a clean attribute-like access.

4. Creating an Object

i = Item(80)

Creates an object i of the class Item with _price = 80.

The constructor initializes the protected attribute _price.

5. Accessing the Property

print(i.price)

Accessing i.price calls the price property method.

The method calculates _price + 20 = 80 + 20 = 100.

print outputs:

100

Final Output:

100

400 Days Python Coding Challenges with Explanation