Overview Organize your code into reusable chunks, make it more readable, and start building real programs by leveraging Python's modular design. Functions are one of the most powerful tools in...

Overview Prepare for inevitable mistakes - catch, handle, and recover from errors so your scripts don't just crash at the first sign of trouble. Introduction: Why Error Handling Matters Picture...

Welcome to Real-World Python Development Congratulations on completing the fundamentals! If you've made it through Chapter 1, you now have the basic tools to write Python scripts, manipulate data, control...

What is Object-Oriented Programming? Object-Oriented Programming (OOP) is a programming paradigm that organizes code around objects rather than functions and logic. Think of it as a way to model real-world...

Overview Learn to read from and write to files, handle different formats, and make your programs interact with real data that survives after your script ends. Introduction Data persistence is...