Python is an excellent way to get started in programming, and this clear, concise guide walks you through Python a step at a time - beginning with basic programming concepts before moving on to functions, data structures, and object-oriented design. This revised third edition reflects the growing role of large language models (LLMs) in programming and includes exercises on effective LLM prompts, testing code, and debugging skills. If you want to learn to program, you have come to the right place. Python is one of the best programming languages for beginners - and it is also one of the most in-demand skills. You have also come at the right time, because learning to program now is probably easier than ever. With virtual assistants like ChatGPT, you don't have to learn alone. Throughout this book, I'll suggest ways you can use these tools to accelerate your learning. This book is primarily for people who have never programmed before and people who have some experience in another programming language. If you have substantial experience in Python, you might find the first few chapters too slow. One of the challenges of learning to program is that you have to learn two languages: one is the programming language itself; the other is the vocabulary we use to talk about programs.