Python Descriptors

Understanding and Using the Descriptor Protocol

Jacob Zimmerman (Autor)

Buch | Softcover

97 Seiten

2018 | 2nd ed.
Apress (Verlag)
978-1-4842-3726-7 (ISBN)

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Create descriptors and see ideas and examples of how to use descriptors effectively. In this short book, you’ll explore descriptors in general, with a deep explanation of what descriptors are, how they work, and how they're used. Once you understand the simplicity of the descriptor protocol, the author delves into using and creating descriptors in practice, with plenty of tips, patterns, and real-world guidance. Because descriptors are inherently flexible, you’ll work with multiple examples illustrating how to best take advantage of them.
This second edition includes additions throughout, including new material covering the set_name_() descriptors, new and improved flowcharts to explain the inner workings of descriptors, and a completely new chapter to address instance-level attributes, the easiest way to create descriptors correctly the first time.
Although brief, Python Descriptors is a comprehensive guide to creating Python descriptors, including a pip install-able library called descriptor_tools, which was written alongside this book and is an open source library on GitHub. After reading this book, you will have a solid understanding of how descriptors work and the techniques to avoid the big gotchas associated with working with them.
What You Will Learn

Discover descriptor protocols

Master attribute access and how it applies to descriptors

Build your own descriptors

Use descriptors to store attributes

Create read-only descriptors

Explore the descriptor classes

Apply the other uses of descriptors

Who This Book Is For
Experienced Python coders, programmers, and developers.

Jacob Zimmerman is a blogger, gamer (tabletop more so than video games), and programmer who was born and raised in Wisconsin. He has a twin brother who could also be considered to have all those traits. Jacob has his own programming blog that focuses on Java, Kotlin, and Python programming, Programming Ideas with Jake. He also writes for a gaming blog with his brother-in-law called Ramblings of Jacob and Delos.

Part I: About Descriptors.- Chapter 1: What Is a Descriptor?.- Chapter 2: The Descriptor Protocol.- Chapter 3: What Are Descriptors Good For?.- Chapter 4: Descriptors in the Standard Library.- Chapter 5: Attribute Access and Descriptors.- Part II: Making Descriptors.- Chapter 6: Which Methods Are Needed?.- Chapter 7: Storing the Attributes.- Chapter 8: Read-Only Descriptors.- Chapter 9: Writing __delete__().- Chapter 10: Descriptors are Classes To.- Chapter 11: Reusing the Wheel.- Chapter 12: Instance-Level Descriptors.- Chapter 13: Other Uses of Descriptors in the World.

Erscheinungsdatum	19.10.2018
Zusatzinfo	4 Illustrations, black and white; XIV, 97 p. 4 illus.
Verlagsort	Berkley
Sprache	englisch
Maße	155 x 235 mm
Themenwelt	Informatik ► Programmiersprachen / -werkzeuge ► Python
Themenwelt	Informatik ► Theorie / Studium ► Compilerbau
Schlagworte	Coding • descriptors • programming • Python • Software • Standard Library
ISBN-10	1-4842-3726-9 / 1484237269
ISBN-13	978-1-4842-3726-7 / 9781484237267
Zustand	Neuware