10 Python Features You’re Not Using (But Really Should)

💡 Learn how to design great software in 7 steps: https://arjan.codes/designguide. Python has a lot of powerful features hiding in plain sight, and many developers never really use them. In this video, you’ll see a series of small but impactful Python features that make real code cleaner, safer, and faster, illustrated with concrete before-and-after examples. If you’ve been writing Python for a while and want to level up how your code reads and behaves, this video will give you a few good “wait… Python can do that?” moments. 🔥 GitHub Repository: https://git.arjan.codes/2026/features. 🎓 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 1:01 Why These Features Matter 1:27 1. functools.cache 2:32 2. typing.Protocol 5:46 3. dataclasses.replace 8:27 4. itertools.pairwise 9:36 5. Assignment Expressions (:=) 10:52 6. pathlib 12:40 7. contextlib.suppress 13:59 8. c