OOP principles overview in Python - Mini Project: Build & Apply

OOP Principles Overview

📖 Scenario: Imagine you are creating a simple program to manage a library. You want to organize books and their details using programming concepts that help keep things neat and easy to understand.

🎯 Goal: You will build a small Python program that uses basic Object-Oriented Programming (OOP) principles: creating a class, adding attributes, using a method, and showing how to create and use objects.

📋 What You'll Learn

Create a class named Book

Add attributes title and author to the class

Add a method display_info that prints the book's title and author

Create an object of the Book class with specific title and author

Call the display_info method to show the book details

💡 Why This Matters

🌍 Real World

Organizing data about things like books, movies, or products using classes helps keep programs clear and easy to manage.

💼 Career

Understanding OOP is essential for many programming jobs because it helps build programs that are easier to maintain and expand.

1

Create the Book class with attributes

Create a class called Book with an __init__ method that takes self, title, and author as parameters. Inside __init__, set self.title to title and self.author to author.

Python

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

Need a hint?

Remember, __init__ is a special method to set up new objects. Use self to store the values inside the object.

2

Add the display_info method

Inside the Book class, add a method called display_info that takes only self as a parameter. This method should print the book's title and author in the format: "Title: {self.title}, Author: {self.author}" using an f-string.

Python

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

    # Add display_info method here
    # Your code here

Need a hint?

Use an f-string inside the print statement to show the title and author clearly.

3

Create a Book object

Create an object named my_book from the Book class with the title "The Great Gatsby" and author "F. Scott Fitzgerald".

Python

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

    def display_info(self):
        print(f"Title: {self.title}, Author: {self.author}")

# Create my_book object here
# Your code here

Need a hint?

Use the class name Book followed by parentheses with the title and author as arguments.

4

Call the display_info method

Call the display_info method on the my_book object to print the book's details.

Python

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

    def display_info(self):
        print(f"Title: {self.title}, Author: {self.author}")

my_book = Book("The Great Gatsby", "F. Scott Fitzgerald")

# Call display_info method here
# Your code here

Need a hint?

Use dot notation to call the method: my_book.display_info().