Understanding the Factory Design Pattern with a Document Management System in Python

Welcome back to our in-depth series on Design Patterns in Python! In this class, we dive deeper into the Factory Design Pattern, reviewing our previous session where we built a simple Document Management System with two types of documents - PDF and Word.

Our document management system was a real-world demonstration of the Factory Design Pattern, which provides an interface for creating objects in a superclass, but allows subclasses to alter the type of objects that will be created.

The DocumentFactory class acts as a Factory for creating PDFDocument and WordDocument objects. It abstracts the process of object creation, making our application more modular, more testable, and easier to extend and maintain.

In this class, we will review this code, clarify the Factory Design Pattern, and discuss the benefits and potential use cases of using this design pattern in Python. We'll also discuss how to handle invalid document types and improve our factory's robustness and versatility.

Join us as we continue to explore the power of design patterns in Python programming!

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