Class Interaction in Python: Author and Book Classes

Level: Beginner

Your task for today is to build two related classes — one for an author and one for a book. This project introduces you to how objects can interact with each other, and how to model real-world relationships in Python using OOP.

📝 Project Task

The program should:

• Define a class Author with attributes:

  • name (string)

  • birth_year (integer)

• Define a class Book with attributes:

  • title (string)

  • year (integer)

  • author (an Author object)

• Add the following methods:

  • Book.get_info() → returns a string like "Book Title by Author Name"

  • Author.write_book(title, year) → returns a new Book instance associated with that author

Bonus (optional):

• Let the author store all books they’ve written

• Add __str__() methods for nicer printing

• Add a method Author.get_bibliography() that prints all titles by the author

This project teaches you how to:

• Build multiple classes that reference each other

• Create object relationships

• Model simple real-world systems like authors and their books

📌 Expected Output

a = Author("George Orwell", 1903)
b = a.write_book("1984", 1949)

print(b.get_info())  # 1984 by George Orwell
print(b.author.name) # George Orwell

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💻 Launch This Project in Colab

Open the interactive Google Colab notebook for today’s project — with full instructions, hints, and solutions.

Click the button below to start coding — no setup needed: