This book is for anyone who wants to understand computer programming. Youll learn to program in a language that s used in millions of smartphones, tablets, and PCs. Youll code along with the book, writing programs to solve real-world problems as you learn the fundamentals of programming using Python 3. Youll learn about design, algorithms, testing, and debugging, and come away with all the tools you need to produce quality code. In this second edition, weve updated almost all the material, incorporating the lessons weve learned over the past five years of teaching Python to people new to programming. You dont need any programming experience to get started. First, youll get a detailed introduction to Python and to programming. Youll find out exactly what happens when your programs are executed. Through real-world examples, youll learn how to work with numbers, text, big data sets, and files. Then youll see how to create and use your own data types.