Pydantic AI Is Incredible | Issue #68


Hi there,

If you’ve been experimenting with trying to integrate AI into your code, you’ve probably run into the same problem I have: unstructured, unpredictable output. And the other way around: how do you let AI agents interact with your own code?

That’s where Pydantic AI comes in.

In this week's video, I show how to use Pydantic AI to embed an LLM agent directly into your Python app: with structured input, validated output, and access to real business logic.

What I love about this approach is that it’s not just “prompt engineering”, it involves proper software design, with type safety and clean integration.

Let me know what you think. Could you see yourself using this in your own projects?

Arjan


Do you enjoy my content on YouTube and would you like to dive in deeper?

🚀 Check out my online courses

My courses have helped thousands of developers take the next step in their careers. Check out these courses to help grow your skills and become a senior developer:

🔧 Need help with a complex codebase?

If your team is struggling with tech debt, unclear architecture, or cloud costs that keep creeping up, my team and I can help. We don’t just review, we get in and fix things. We’re only working with a few companies at a time to stay focused, so if it sounds like a fit:

Unsubscribe | Send by ArjanCodes

Wolvenplein 25, Utrecht, UT 3512 CK

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.

Read more from The Friday Loop

Hi there, When I see an if-statement with multiple elifs in my code, it almost always triggers an investigation. Is there some way to rewrite this to make the logic simpler? Is there a chance that in the future I'll need to add even more complexity? If so, I'll try to redesign the code so that I don't need that chain of if-elif statements. In this week’s video, I cover a design pattern that helped me eliminate many of those chains from a project + at the same time made the code easier to...

Hi there, I just published a new video about Python 3.14, and no, it’s not just about the version number lining up with π (though that does make me feel more complete). The new release brings a bunch of improvements, but I decided to focus on the features I personally love and that I actually use in my day-to-day work. Here’s what I cover in the video: A small but beautiful improvement to exception syntax (fewer parentheses!) Native Zstandard compression with way better performance than gzip...

Hi there, When you start a new Python project, it often begins as a single file. Before you know it, that file turns into a tangle of routes, configs, and ad-hoc fixes. Scaling that into something a team can maintain is tough. In my latest video, I show you the anatomy of a scalable Python project. We’ll cover folder structure, config management, logging, testing, and how to set up pyproject.toml, .python-version, Docker, and docker-compose for smooth local and production environments. I’ll...