In this series, I talk about design patterns and principles and show you how you can use them to improve the quality of your code. All examples are in Python.
Curated by: ArjanCodes (99 videos)
🧱 Build software that lasts. Join the Software Design Mastery waiting list → https://arjan.codes/mastery. Design patterns aren't bad. But using them too early can make your code more complicated than it needs to be. In this video, I start with a Python example that uses inheritance, strategies, and a factory to solve a very small problem. Then I simplify it and explore a more realistic scenario where an abstraction actually provides value. Along the way, I look at a simple rule of thumb for deciding when a design pattern helps and when it just adds complexity. If you've ever wondered whether you're over-engineering your code, this video is for you. 🔥 GitHub Repository: https://git.arjan.codes/2026/pattern. 🎓 ArjanCodes Courses: https://www.arjancodes.com/courses. 💬 Join my Discord server: https://discord.arjan.codes. ⌨️ Keyboard I’m using: https://amzn.to/49YM97v. 🔖 Chapters: 0:00 Intro 1:11 What’s Wrong With This? 2:14 Replace the Pattern With Functions 5:03 The Simplified Workflow 5:24 Make It More Realistic 6:40 Let the Adapter Appear Naturally 8:27 Use the Boundary in the Workflow 10:27 The Adapter Implementation 12:27 Testing the Workflow 13:25 Rule of Thumb 13:51 Final Thoughts #arjancodes #softwaredesign #python