Hi there, Ever wish you could combine the simplicity of SQL with the flexibility of DataFrames? Meet DuckDB—a tiny, analytics-focused database that works wonders for anyone wrangling data. 🦆✨ In this week’s video, I explore: Why DuckDB is perfect for analytical workloads How it seamlessly integrates with tools like Pandas The difference between in-memory and persistent storage If you’re tired of clunky workflows and want a lightweight, powerful solution, this is a tool you need to see in...
11 days ago • 2 min read
Hi there, You've certainly read all about the new AI model from China, DeepSeek, and how its release affected the stock market. To be honest though, I don't believe it will affect us software developers all that much (we're all pretty much screwed anyway 🙄). In today's video I briefly share my thoughts about DeepSeek and other recent AI models, and what you should do to navigate all these changes and benefit from them as a software engineer. Wish you a great weekend! Cheers, Arjan # News Is...
18 days ago • 1 min read
Hi there, Let’s talk about Python—the language we all love. ❤️ You might think you know your way around it, but even senior developers can fall into common traps or miss out on some of its best features. In this week’s video, I break down 10 tips that will make your code cleaner, faster, and more Pythonic. For example, comprehensions are not just for lists—you can use them for sets, dictionaries, and even generators. And if you’re not using f-strings yet… well, you’re missing out on a lot of...
25 days ago • 2 min read
Hi there, Honey might save you a few bucks, but it’s stealing from creators while doing so. Ouch. 🍯 In this week’s video, I tackle this issue head-on by designing a less evil version of Honey: meet Kale. 🥬 Kale is a browser extension that’s transparent, open-source, and creator-friendly. It doesn’t override affiliate cookies, gives users control, and still applies sweet discount coupons. But this video isn’t just about the what—it’s also about the how. I break down the full architecture, the...
about 1 month ago • 2 min read
Hi there, I just posted a new video, and it gets a bit personal. After four years of running ArjanCodes, I learned a tough lesson in 2024: trying to do too much leads to burnout, stress, and lower quality work. So I hit the brakes. Scaled back. Simplified. And guess what? The videos got better. I feel more focused. The team is happier. Now, heading into 2025, I’m embracing the Keep Things Stupidly Simple principle—both in software design and life. Watch this week’s video, if you want to hear...
about 1 month ago • 2 min read
Hi there, Debugging FastAPI apps in VSCode often feels harder than it needs to be. Between uvicorn, browser requests, and vague errors, it’s enough to make anyone pull their hair out. In today’s video, I’ll show you how to set up the perfect debugging environment so you can find and squash those bugs like a pro. 🔥 Here’s what you’ll learn: How to set up a debugging configuration in VSCode that works seamlessly with FastAPI. Why breakpoints, logpoints, and conditional breakpoints are your...
about 2 months ago • 2 min read
Merry Christmas, everyone! 🎄 As the year wraps up, I just want to say a massive THANK YOU for all the support you’ve shown ArjanCodes in 2024. Together, we’ve hit an incredible milestone—260k subscribers! 🎉 This week, I’m hitting the pause button to spend some quality time with my family (and maybe eat a suspicious amount of cookies 🍪). That means no new video this week—but don’t worry, I’ve got big plans and exciting ideas for 2025. I can’t wait to dive into a new year of coding, learning,...
about 2 months ago • 2 min read
Hi there,Did you miss me dissecting, analyzing, and grilling your code? Well, the wait is over! ArjanCodes Code Roast is back! 🔥 In this week’s video, I’m diving into a project submitted by one of our community members: Tom Donahue’s Data Validator CLI. It’s a creative and ambitious project with some clever patterns—but also a prime example of how good intentions can lead to over-engineered code. Here’s what I tackled: ✅ Streamlining overly complex design patterns. ✅ Introducing unit tests to...
2 months ago • 2 min read
Hi there, Dependency management in Python just got a major upgrade. Say hello to uv, an insanely fast package installer and resolver built in Rust. In this week’s video, I’ll show you how uv works and why it’s a game-changer for Python developers. Imagine pip, but turbocharged: faster installs, quicker resolutions, and total compatibility with your current workflows. Here’s what you’ll learn: ✔️ Why uv outperforms pip ✔️ How to integrate uv into your projects today ✔️ The magic behind its...
2 months ago • 2 min read