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.
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Try This if You Don’t Like Python’s Exception Handling | Issue #30
Published about 1 year ago • 2 min read
Hi there,
If you’ve ever wished Python was more like Rust when it comes to handling errors, I have good news! Well, almost. 😉
In this week’s video, I introduce the returns package—a functional programming library that handles errors without exceptions. The Maybe and Result containers make error handling smooth, while railway-oriented programming keeps your code on track.
But before you dive in, there’s a catch: this approach can add complexity, and it’s not ideal for every project. Watch the video to learn how returns could (or might not) work for you!
Enjoy the video and happy coding!
Cheers,
Arjan
# News
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You Want Modules, Not Microservices
Thinking of diving into microservices? Ted Neward’s article, makes a compelling case for sticking with modules. While microservices promise flexibility, they often come with heavy complexity—distributed systems, latency, data consistency issues—that don’t always pay off.
For many projects, a well-structured modular monolith can offer the benefits without the added headache. Curious? 👉 Check out the full article here.
Malicious Package Found Stealing AWS Keys from Thousands of Developers
Security heads-up! 🚨 A new malicious PyPI package named "fabrice" has been discovered, targeting developers by embedding harmful code right in the package.
Once installed, it opens the door for remote attackers to compromise your system and data. If you or your team work with Python packages, now’s a great time to double-check dependencies and stay vigilant. Get the full details in the article here.
# Community
Our Discord community recently had a great conversation about managing JWT (JSON Web Token) refresh, tackling questions like whether to check for token expiry on each request, the pros and cons of handling it client-side vs. server-side, and alternatives for session management. Members shared insights on using tools like Flask, Supabase, and Firebase, exploring the security and technical considerations behind each approach.
Curious to read more and join the discussion? 🤓💬 Head over to our Discord server, where these in-depth conversations are happening every day!
P.S. Last week, I shared a thread about Advent of Code —a fantastic programming challenge where you solve 25 puzzles to help Santa 🎅. It’s not too late to join, and many of you loved the thread! Click here to dive into the fun and test your skills! 🎄
Do you enjoy my content on YouTube and would you like to dive in deeper? Check out my online courses below. They've helped thousands of developers take the next step in their careers.
🚀 The Mindset Online Course Series
The goal of this series is to help junior developers grow their skills to become senior developers faster.
The Software Architect Mindset - Learn the mindset that will allow you to effortlessly build and maintain scalable software systems. Become a software architect.
The 30-Day Design Challenge - Get the practice you're missing. Learn to deal with a wide variety of software design problems.
💡 If you’re part of a development team at a company, I offer special packages for companies that give your team the tools to consistently write high-quality code and dramatically increase your team's productivity.
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.
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