Python 3: From Beginner to Practical

This is an introductory Python textbook written by Dong Hongwei, published by the Publishing House of Electronics Industry in October 2019. It is part of the General Higher Education "13th Five-Year Plan" Textbook series, the New Engineering Education Path, and the Computer Science Major Planning Textbook series. The book is divided into two parts. Part One, "Python Syntax and Practice," begins with variables and objects, operators and expressions, control statements, functions, and built-in data types, then moves on to object-oriented features such as classes and objects, derived classes, instance methods and static methods, and introduces advanced syntax features including iterators and iterable objects, closures, decorators, @property, and deep and shallow copies, as well as input/output, errors and exceptions, and debugging. While explaining core syntax, it intersperses classic problems from fields such as binary search, bubble sort and selection sort, Floyd's shortest path, game programming, information management, machine learning and reinforcement learning as practical exercises. Part Two, "The Python Standard Library," introduces common standard library applications including operating system interface modules, time and date modules, regular expressions, concurrent computing, graphical user interface (GUI) programming, network socket programming, Internet application programming, and data persistence. Concise in explanation and rich in examples, the book serves both as a course textbook for university computer science programs and as a systematic introduction to Python 3 for self-motivated programming enthusiasts.