Design and Guidance: OOP in Python (Summary)

In this course, you’ve learned when to use classes in your code. This knowledge is just as important as knowing how to write a class with attributes and methods. You’ve even learned about alternatives to inheritance.

SOLID is an acronym for five principles that you should use when thinking about object-oriented code. After this course, you’re well versed in the principles:

• The Single-Responsibility Principle (SRP)
• The Open-Closed Principle (OCP)
• The Liskov Substitution Principle (LSP)
• The Interface Segregation Principle (ISP)
• The Dependency Inversion Principle (DIP)

This course is the third in a three-part series. Part one is an introduction to class syntax, where you learn how to write a class and use its attributes and methods. Part two is about inheritance and class internals.

To learn more about the concepts from this course, check out:

• Python Descriptors: An Introduction
• Build Enumerations of Constants with Python’s Enum
• Metaclasses in Python
• Callables: Python’s “functions” are sometimes classes
• SOLID on Wikipedia
• The SOLID Principles, Explained with Motivational Posters