SOLID: Writing Better Python Without Overengineering

YouTube Excerpt: Check out https://www.squarespace.com/arjancodes to save 10% off your first purchase of a website or domain using code ARJANCODES. Are the SOLID principles still relevant when you’re writing Python in 2025? In this video, we take a real-world problem and implement it three ways: as a messy all-in-one script, a clean SOLID-inspired class-based version, and a lean functional approach. Along the way, we explore what each SOLID principle means in practice, when it helps, and when it actually makes things worse. 🔥 GitHub Repository: https://git.arjan.codes/2025/solid. 💡 Learn how to design great software in 7 steps: https://arjan.codes/designguide. 🎓 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 0:35 The Task: Generate a Sales Report 2:37 What Is SOLID, Really? 4:32 The Messy Version (AKA reality) 7:05 The SOLID-Inspired Version (Class-Based) 16:59 The Functional Version (Same Result, Fewer Classes) 20:51 Final Thoughts #arjancodes #softwaredesign #python

Check out https://www.squarespace.com/arjancodes to save 10% off your first purchase of a website or domain using code ARJANCODES. Are the SOLID...

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