Every Friday, you'll get a recap of the most important and exciting Python and coding news. The Friday Loop also keeps everyone posted on new ArjanCodes courses and any limited offers coming up.
How to Use Git Branches Like a Pro (FastAPI Example) | Issue #48
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The Friday Loop
Every Friday, you'll get a recap of the most important and exciting Python and coding news. The Friday Loop also keeps everyone posted on new ArjanCodes courses and any limited offers coming up.
Hi there, We all use def to define functions in Python. But did you know there are at least 7 other ways to do it? Some of them are useful. Some are questionable. And the last one is so ridiculous, it might crash your interpreter. In this week’s video, I walk through each method, explain how it works, why you should use it (or not), and what it teaches us about how Python works under the hood. This was a really interesting topic to explore. I learned a lot from it and I hope you will too....
Hi there, Functional programming in Python can be elegant… but not always. ⚠️ In this week’s video, I walk through four common scenarios where replacing for loops with map() and filter() actually leads to worse code. Not just less readable—but also harder to debug, more error-prone, and sometimes even misleading. We’ll dive into: Exception handling that becomes a mess inside a lambda Side effects (like writing to files) that violate functional principles Nested logic that turns into...
Hi there, What’s in my stack? Python, TypeScript… and one wooden robot. 🤖 You might not know this, but before ArjanCodes was a channel, it was a pile of ideas held together by duct tape and Google Docs. Now? We’ve got a full ecosystem: static websites on Astro, backend automations in Python, our own SDK, and a business portal for team licenses—all deployed with GitHub Actions and a sprinkle of serverless. ⚡ In this week’s video, I give you a behind-the-scenes tour of our real tech stack—no...