Effective Python: 90 Specific Ways to Write Better Python by Brett Slatkin

Effective Python is a practical guide book by Brett Slatkin that teaches 90 specific techniques for writing better Python code. Rather than abstract theory, it focuses on concrete patterns and practices that improve code quality, readability, and performance. The book covers topics like working with built-in types effectively, functions and classes, metaclasses, concurrency, and robustness. It's aimed at intermediate Python developers who already know the basics and want to write more professional, maintainable code. The freemium model provides access to some content online, with the full book available for purchase.