Guided: Implementing a Design Pattern in Python

In this hands-on lab, you’ll implement the Factory Method design pattern in Python by refactoring a simple command-line tool that sends messages via Email or SMS. You’ll start with tightly coupled procedural code and gradually introduce abstraction through interfaces, concrete classes, and a factory method. Along the way, you'll see how this pattern supports cleaner, more maintainable code that follows object-oriented design principles.