15 Python Libraries That Deserve More Attention

🧱 Build software that lasts. Join the Software Design Mastery program → arjan.codes/mastery. In this video, I’m sharing 15 Python libraries that can make your code cleaner, faster, and easier to maintain. I cover libraries for configuration, serialization, dependency injection, state machines, scheduling, data analysis, testing, UI development, and more. One of them even fixes a long-standing issue with Python's `datetime` handling around daylight saving time. 🔥 GitHub Repository: git.arjan.codes/2026/libraries. 💬 Join my Discord server: discord.arjan.codes. ⌨️ Keyboard I’m using: amzn.to/49YM97v. 🔖 Chapters: 0:00 Intro 0:19 Pydantic Settings 2:08 msgspec 3:24 Dacite 4:26 AutoRegistry 5:40 python-statemachine 6:32 Dishka 7:36 DuckDB 8:24 Schedium 9:54 Whenever 10:52 Pint 11:59 GeoPy 12:42 NiceGUI 14:08 Faker 15:24 Zensical 16:24 Complexipy 18:24 Final Thoughts #arjancodes #softwaredesign #python