Browse Lessons

Secure Python Installs? Why You Should Always Use Wheels

Exploring Python Closures: Examples & Use Cases: Understanding Scope & Closure, Creating a Closure

Using AI With Pytest: Helpful or Risky?

INI vs JSON vs TOML vs YAML: Which Config Format Wins?

SQLite + SQLAlchemy: Level Up Your Python Projects

Great Visualizations Start With the Right Audience

The Risks Hiding in MCP Toolchains

UV Can Self-Update (If You Install It This Way)

TK Did Layout Right… Decades Before CSS Caught Up

Getting Started With marimo Notebooks: Building a Starter Notebook & Examining a Sample Problem

Running Llama 3 on a Phone: Here’s What It Can Do

Marimo + PEP 723: Smarter Python Package Sandboxing

Why It’s Really Called a Shebang in Python 🧐

Explore Python’s Underrated Standard Library Gems

Avoid SQL Injection & Logging Overhead with t-Strings

Avoid Log4j-Like Disasters with Better Dependency Tracking

Comparing Real-World Python Performance Against Big-O | Real Python Podcast #257

Tame Million-Line Codebases with LLM Tools

Exploring Protocols in Python: Understanding & Creating Custom Protocols

Stop Bugs from Coming Back: Regression Testing

Build Interactive Python Notebooks with marimo—No Jupyter Needed!

Boost Your Python Plots With Titles and Annotations

Start Automating: Build Your First GitHub Action

Why Python Isn’t Relocatable -- and How to Fix It