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Python 3 Object-Oriented Programming - Second Edition

Python 3 Object-Oriented Programming - Second Edition

By : Dusty Phillips
3.9 (36)
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Python 3 Object-Oriented Programming - Second Edition

Python 3 Object-Oriented Programming - Second Edition

3.9 (36)
By: Dusty Phillips

Overview of this book

Python 3 is more versatile and easier to use than ever. It runs on all major platforms in a huge array of use cases. Coding in Python minimizes development time and increases productivity in comparison to other languages. Clean, maintainable code is easy to both read and write using Python's clear, concise syntax. Object-oriented programming is a popular design paradigm in which data and behaviors are encapsulated in such a way that they can be manipulated together. Many modern programming languages utilize the powerful concepts behind object-oriented programming and Python is no exception. Starting with a detailed analysis of object-oriented analysis and design, you will use the Python programming language to clearly grasp key concepts from the object-oriented paradigm. This book fully explains classes, data encapsulation, inheritance, polymorphism, abstraction, and exceptions with an emphasis on when you can use each principle to develop well-designed software. You'll get an in-depth analysis of many common object-oriented design patterns that are more suitable to Python's unique style. This book will not just teach Python syntax, but will also build your confidence in how to program. You will also learn how to create maintainable applications by studying higher level design patterns. Following this, you'll learn the complexities of string and file manipulation, and how Python distinguishes between binary and textual data. Not one, but two very powerful automated testing systems will be introduced in the book. After you discover the joy of unit testing and just how easy it can be, you'll study higher level libraries such as database connectors and GUI toolkits and learn how they uniquely apply object-oriented principles. You'll learn how these principles will allow you to make greater use of key members of the Python eco-system such as Django and Kivy. This new edition includes all the topics that made Python 3 Object-oriented Programming an instant Packt classic. It's also packed with updated content to reflect recent changes in the core Python library and covers modern third-party packages that were not available on the Python 3 platform when the book was first published.  
Table of Contents (15 chapters)
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14
Index

What this book covers

This book is loosely divided into four major parts. In the first four chapters, we will dive into the formal principles of object-oriented programming and how Python leverages them. In chapters 5 through 8, we will cover some of Python's idiosyncratic applications of these principles by learning how they are applied to a variety of Python's built-in functions. Chapters 9 through 11 cover design patterns, and the final two chapters discuss two bonus topics related to Python programming that may be of interest.

Chapter 1, Object-oriented Design, covers important object-oriented concepts. It deals mainly with terminology such as abstraction, classes, encapsulation, and inheritance. We also briefly look at UML to model our classes and objects.

Chapter 2, Objects in Python, discusses classes and objects and how they are used in Python. We will learn about attributes and behaviors on Python objects, and also the organization of classes into packages and modules. Lastly, we will see how to protect our data.

Chapter 3, When Objects Are Alike, gives us a more in-depth look into inheritance. It covers multiple inheritance and shows us how to extend built-ins. This chapter also covers how polymorphism and duck typing work in Python.

Chapter 4, Expecting the Unexpected, looks into exceptions and exception handling. We will learn how to create our own exceptions and how to use exceptions for program flow control.

Chapter 5, When to Use Object-oriented Programming, deals with creating and using objects. We will see how to wrap data using properties and restrict data access. This chapter also discusses the DRY principle and how not to repeat code.

Chapter 6, Python Data Structures, covers the object-oriented features of Python's built-in classes. We'll cover tuples, dictionaries, lists, and sets, as well as a few more advanced collections. We'll also see how to extend these standard objects.

Chapter 7, Python Object-oriented Shortcuts, as the name suggests, deals with time-savers in Python. We will look at many useful built-in functions such as method overloading using default arguments. We'll also see that functions themselves are objects and how this is useful.

Chapter 8, Strings and Serialization, looks at strings, files, and formatting. We'll discuss the difference between strings, bytes, and bytearrays, as well as various ways to serialize textual, object, and binary data to several canonical representations.

Chapter 9, The Iterator Pattern, introduces us to the concept of design patterns and covers Python's iconic implementation of the iterator pattern. We'll learn about list, set, and dictionary comprehensions. We'll also demystify generators and coroutines.

Chapter 10, Python Design Patterns I, covers several design patterns, including the decorator, observer, strategy, state, singleton, and template patterns. Each pattern is discussed with suitable examples and programs implemented in Python.

Chapter 11, Python Design Patterns II, wraps up our discussion of design patterns with coverage of the adapter, facade, flyweight, command, abstract, and composite patterns. More examples of how idiomatic Python code differs from canonical implementations are provided.

Chapter 12, Testing Object-oriented Programs, opens with why testing is so important in Python applications. It emphasizes test-driven development and introduces two different testing suites: unittest and py.test. Finally, it discusses mocking test objects and code coverage.

Chapter 13, Concurrency, is a whirlwind tour of Python's support (and lack thereof) of concurrency patterns. It discusses threads, multiprocessing, futures, and the new AsyncIO library.

Each chapter includes relevant examples and a case study that collects the chapter's contents into a working (if not complete) program.

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