Why object-oriented programming is used in Python - See It in Action

Why object-oriented programming is used

📖 Scenario: Imagine you are organizing a small library. You want to keep track of books and their details like title, author, and whether they are borrowed or not.

🎯 Goal: You will create a simple program using object-oriented programming to represent books and check their status.

📋 What You'll Learn

Create a class called Book with attributes for title, author, and borrowed status

Create an instance of Book with specific details

Add a method to check if the book is borrowed

Print the book details and borrowed status

💡 Why This Matters

🌍 Real World

Object-oriented programming helps organize data and behavior together, like keeping track of books in a library system.

💼 Career

Many software jobs use object-oriented programming to build clear and reusable code for applications.

1

Create the Book class

Create a class called Book with an __init__ method that takes title, author, and borrowed as parameters and assigns them to instance variables.

Python

# Define the Book class with __init__ method
# Your code here

Need a hint?

Use class Book: to start the class. Inside, define __init__ with self and the three parameters. Assign each parameter to self variables.

2

Create a Book instance

Create a variable called my_book and assign it an instance of Book with title 'The Little Prince', author 'Antoine de Saint-Exupéry', and borrowed status False.

Python

class Book:
    def __init__(self, title, author, borrowed):
        self.title = title
        self.author = author
        self.borrowed = borrowed

# Create an instance of Book called my_book
# Your code here

Need a hint?

Use the class name Book with parentheses and pass the exact values for title, author, and borrowed status.

3

Add a method to check borrowed status

Inside the Book class, add a method called is_borrowed that returns the value of self.borrowed.

Python

class Book:
    def __init__(self, title, author, borrowed):
        self.title = title
        self.author = author
        self.borrowed = borrowed

    # Add is_borrowed method here
    # Your code here

my_book = Book('The Little Prince', 'Antoine de Saint-Exupéry', False)

Need a hint?

Define a method with def is_borrowed(self): and return self.borrowed.

4

Print book details and borrowed status

Print the book's title and author using my_book.title and my_book.author. Then print Borrowed: followed by the result of my_book.is_borrowed().

Python

class Book:
    def __init__(self, title, author, borrowed):
        self.title = title
        self.author = author
        self.borrowed = borrowed

    def is_borrowed(self):
        return self.borrowed

my_book = Book('The Little Prince', 'Antoine de Saint-Exupéry', False)

# Print the book details and borrowed status
# Your code here

Need a hint?

Use print with f-strings to show the title, author, and borrowed status by calling my_book.is_borrowed().