ArjanCodes — transcripts.

1Stop Checking for None Everywhere 2AI Writes Code Faster Than You. Now What? 3Too Many Parameters? Use This Pattern 4You Don’t Need That Design Pattern 5Nested Loops Aren’t the Problem. This Is. 6Your REST API Needs Webhooks 7I’m done with the AI hype 8Let’s Fix Bloated Python Classes Once and For All 9DRY Often Makes Your Code Worse 10Your API Can’t Handle Real-World Integrations 11Don’t Use Boolean Flags in Python, Use Policies Instead 12What Most Python Developers Miss About Generators 13The State Pattern Done the Pythonic Way 14Python Has Serious Problems, But I Use It Anyway 15Why “Clean Code” Often Creates Worse Designs 16The Hidden Mechanism Behind Clean Python APIs (Descriptor Deep Dive) 17Stop Passing Primitives Everywhere (Use Value Objects) 18Stop Mixing FastAPI with Business Logic: Fix It with Ports & Adapters 19You’ve Been Underusing Dataclasses (These Tricks Are Wild) 20Python Properties vs Methods: The Contract You Didn’t Know You Were Making 21CQRS in Python: Clean Reads, Clean Writes 22Stop Building Ugly APIs: Use the Fluent Interface Pattern 2310 Python Features You’re Not Using (But Really Should) 24This Design Pattern Scares Me To Death 257 Things You Didn’t Know Dataclasses Could Do 26The Right Way to Use AI for Writing Maintainable Code 27I Made a Classic Refactoring Mistake 28How to Tell If Your Code Is Actually Production-Ready 29Retry Pattern: The Secret to Resilient Python Code 30From Spaghetti Code to Clean Python 31The Lazy Loading Pattern: How to Make Python Programs Feel Instant 32Stop Hardcoding Everything: Use Dependency Injection 33Stop Overwriting State And Use Event Sourcing Instead 34Learning Python Feels Easy. Until It Isn’t. 35How to Write Python That Feels Like Python 36Too Many Function Arguments? Use This Pattern 37The Best Way to Share Code Between Python Apps 38I Hate Long If-Elif Chains: This Design Pattern Solved It Once and For All 39My 4 Favorite Python 3.14 Features 40Anatomy of a Scalable Python Project (FastAPI) 41I Tried SOLID Principles in Python… Here’s What Happened 42The Real Reason the Singleton Pattern Exists 43Avoid Messy Code: Design Patterns for AI Agents in Python 4410 Powerful Python Modules You’re Probably Not Using 45Build Production-Ready AI Agents in Python with Pydantic AI 46We need to talk. 47How to Write Great Unit Tests in Python 48UV Just Got A Serious Upgrade 49Beyond Pandas & NumPy: 14 Python Libraries to Try 50The Builder Pattern in Python: Finally Explained!