Python Coding challenge - Day 836| What is the output of the following Python Code?

 

Code Explanation:

Importing the dataclass decorator

from dataclasses import dataclass

This imports @dataclass, a decorator that automatically adds useful methods to a class (like __init__, __repr__, etc.).

It helps create classes that mainly store data with less code.

Declaring the Product class as a dataclass

@dataclass

class Product:

@dataclass tells Python to automatically create:

an initializer (__init__)

readable string format

comparison methods

The class name is Product, representing an item with price and quantity.

Defining class fields

    price: int

    qty: int

These define the two attributes the class will store:

price → an integer value

qty → an integer quantity

With @dataclass, Python will automatically create:

def __init__(self, price, qty):

    self.price = price

    self.qty = qty

Creating a method to compute total cost

    def total(self):

        return self.price * self.qty

Explanation:

Defines a method named total.

It multiplies the product’s price by qty.

Example: price = 7, qty = 6 → total = 42.

Creating a Product object and printing result

print(Product(7, 6).total())

Breakdown:

Product(7, 6) → Creates a Product object with:

price = 7

qty = 6

.total() → Calls the method to compute 7 × 6 = 42.

print(...) → Displays 42.

Final Output

42

700 Days Python Coding Challenges with Explanation