英文版本，python编程书籍。 INTRODUCTION PART I FUNCTIONS CHAPTER 1 Decorators CHAPTER 2 Context Managers CHAPTER 3 Generators PART II CLASSES CHAPTER 4 Magic Methods CHAPTER 5 Metaclasses CHAPTER 6 Class Factories CHAPTER 7 Abstract Base Classes PART III DATA CHAPTER 8 Strings and Unicode CHAPTER 9 Regular Expressions PART IV EVERYTHING ELSE CHAPTER 10 Python 2 Versus Python 3 CHAPTER 11 Unit Testing CHAPTER 12 CLI Tools CHAPTER 13 asyncio CHAPTER 14 Style