Instance attributes in Python - Mini Project: Build & Apply

Instance Attributes

📖 Scenario: You are creating a simple program to store information about books in a library. Each book has a title and an author.

🎯 Goal: Build a Python class called Book that uses instance attributes to store the title and author of each book. Then create one book object and print its details.

📋 What You'll Learn

Create a class named Book

Add an __init__ method with parameters self, title, and author

Inside __init__, set instance attributes self.title and self.author

Create an instance of Book named my_book with title '1984' and author 'George Orwell'

Print the title and author of my_book in the format: Title: 1984, Author: George Orwell

💡 Why This Matters

🌍 Real World

Storing information about objects like books, users, or products is common in software. Instance attributes let each object keep its own data.

💼 Career

Understanding instance attributes is essential for working with classes and objects in Python, a key skill for many programming jobs.

1

Create the Book class with an __init__ method

Create a class called Book with an __init__ method that takes self, title, and author as parameters. Inside __init__, set the instance attributes self.title and self.author to the values of title and author respectively.

Python

# Your code here

Need a hint?

Remember, self refers to the current object. Use it to store the title and author as instance attributes.

2

Create an instance of Book

Create an instance of the Book class named my_book with the title '1984' and author 'George Orwell'.

Python

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

# Your code here

Need a hint?

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

3

Access instance attributes

Use my_book.title and my_book.author to access the title and author of the book.

Python

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

my_book = Book('1984', 'George Orwell')

# Your code here

Need a hint?

Use dot notation to get the values stored in the instance attributes.

4

Print the book details

Print the title and author of my_book in the format: Title: 1984, Author: George Orwell using an f-string.

Python

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

my_book = Book('1984', 'George Orwell')

title = my_book.title
author = my_book.author

# Your code here

Need a hint?

Use print(f"Title: {title}, Author: {author}") to display the book details.