Hi there, Most apps only store the final result: the current balance, the current inventory, the current status. But what if you could track every change that led to that result? That’s exactly what the event sourcing pattern allows you to do. Instead of overwriting state, you store a sequence of immutable events and derive the current state by replaying them. It’s like Git (kinda), but for your domain logic. In this week’s video, I show you how to implement event sourcing in Python from...

Hi there, If you’ve been learning Python for a while and still feel like you’re not improving, you’re not alone. Python feels easy at first. The syntax is clean, the barrier to entry is low, and you can build something useful in your first hour. But then… things get weird. You hit a wall. There’s object-oriented programming. Then functional programming. Then decorators, dunder methods, typing, Protocol, mypy, async… And somehow Python lets you write the same thing five different ways, and...

Hi there, You’ve probably heard developers say "That’s not very Pythonic…" But what is Pythonic code, really? Is it about using list comprehensions? Avoiding for-loops? Dressing up like Guido van Rossum? In this week’s video, I answer that question by taking a small, messy Python script and refactoring it step-by-step using the principles behind idiomatic Python. Along the way, I’ll show you what it means to think like a Python developer, using things like: Functions instead of unnecessary...