📥 Download PDF

Fluent Python

by Luciano Ramalho

Programming

Book Details

Book Title

Fluent Python

Author

Luciano Ramalho

Publisher

O'Reilly Media

Publication Date

2022

ISBN

9781492056355

Number of Pages

1358

Language

English

Format

PDF

File Size

7.8MB

Subject

Python Programming;Best Practices in Python;Object-Oriented & Functional Techniques in Python

Preface
Chapter 1. The Python Data Model
What’s New in This Chapter
A Pythonic Card Deck
How Special Methods Are Used
Overview of Special Methods
Why len Is Not a Method
Chapter Summary
Further Reading
Chapter 2. An Array of Sequences
What’s New in This Chapter
Overview of Built-In Sequences
List Comprehensions and Generator Expressions
Tuples Are Not Just Immutable Lists
Unpacking Sequences and Iterables
Pattern Matching with Sequences
Slicing
Using + and * with Sequences
list.sort Versus the sorted Built-In
When a List Is Not the Answer
Chapter Summary
Further Reading
Chapter 3. Dictionaries and Sets
What’s New in This Chapter
Modern dict Syntax
Pattern Matching with Mappings
Standard API of Mapping Types
Automatic Handling of Missing Keys
Variations of dict
Immutable Mappings
Dictionary Views
Practical Consequences of How dict Works
Set Theory
Practical Consequences of How Sets Work
Set Operations on dict Views
Chapter Summary
Further Reading
Chapter 4. Unicode Text Versus Bytes
What’s New in This Chapter
Character Issues
Byte Essentials
Basic Encoders/Decoders
Understanding Encode/Decode Problems
Handling Text Files
Normalizing Unicode for Reliable Comparisons
Sorting Unicode Text
The Unicode Database
Dual-Mode str and bytes APIs
Chapter Summary
Further Reading
Chapter 5. Data Class Builders
What’s New in This Chapter
Overview of Data Class Builders
Classic Named Tuples
Typed Named Tuples
Type Hints 101
More About @dataclass
Data Class as a Code Smell
Pattern Matching Class Instances
Chapter Summary
Further Reading
Chapter 6. Object References, Mutability, and Recycling
What’s New in This Chapter
Variables Are Not Boxes
Identity, Equality, and Aliases
Copies Are Shallow by Default
Function Parameters as References
del and Garbage Collection
Tricks Python Plays with Immutables
Chapter Summary
Further Reading
Chapter 7. Functions as First-Class Objects
What’s New in This Chapter
Treating a Function Like an Object
Higher-Order Functions
Anonymous Functions
The Nine Flavors of Callable Objects
User-Defined Callable Types
From Positional to Keyword-Only Parameters
Packages for Functional Programming
Chapter Summary
Further Reading
Chapter 8. Type Hints in Functions
What’s New in This Chapter
About Gradual Typing
Gradual Typing in Practice
Types Are Defined by Supported Operations
Types Usable in Annotations
Annotating Positional Only and Variadic Parameters
Imperfect Typing and Strong Testing
Chapter Summary
Further Reading
Chapter 9. Decorators and Closures
What’s New in This Chapter
Decorators 101
When Python Executes Decorators
Registration Decorators
Variable Scope Rules
Closures
The nonlocal Declaration
Implementing a Simple Decorator
Decorators in the Standard Library
Parameterized Decorators
Chapter Summary
Further Reading
Chapter 10. Design Patterns with First-Class Functions
What’s New in This Chapter
Case Study: Refactoring Strategy
Decorator-Enhanced Strategy Pattern
The Command Pattern
Chapter Summary
Further Reading
Chapter 11. A Pythonic Object
What’s New in This Chapter
Object Representations
Vector Class Redux
An Alternative Constructor
classmethod Versus staticmethod
Formatted Displays
A Hashable Vector2d
Supporting Positional Pattern Matching
Complete Listing of Vector2d, Version 3
Private and “Protected” Attributes in Python
Saving Memory with __slots__
Overriding Class Attributes
Chapter Summary
Further Reading
Chapter 12. Special Methods for Sequences
What’s New in This Chapter
Vector: A User-Defined Sequence Type
Vector Take #1: Vector2d Compatible
Protocols and Duck Typing
Vector Take #2: A Sliceable Sequence
Vector Take #3: Dynamic Attribute Access
Vector Take #4: Hashing and a Faster ==
Vector Take #5: Formatting
Chapter Summary
Further Reading
Chapter 13. Interfaces, Protocols, and ABCs
The Typing Map
What’s New in This Chapter
Two Kinds of Protocols
Programming Ducks
Goose Typing
Static Protocols
Chapter Summary
Further Reading
Chapter 14. Inheritance: For Better or for Worse
What’s New in This Chapter
The super() Function
Subclassing Built-In Types Is Tricky
Multiple Inheritance and Method Resolution Order
Mixin Classes
Multiple Inheritance in the Real World
Coping with Inheritance
Chapter Summary
Further Reading
Chapter 15. More About Type Hints
What’s New in This Chapter
Overloaded Signatures
TypedDict
Type Casting
Reading Type Hints at Runtime
Implementing a Generic Class
Variance
Implementing a Generic Static Protocol
Chapter Summary
Further Reading
Chapter 16. Operator Overloading
What’s New in This Chapter
Operator Overloading 101
Unary Operators
Overloading + for Vector Addition
Overloading * for Scalar Multiplication
Using @ as an Infix Operator
Wrapping-Up Arithmetic Operators
Rich Comparison Operators
Augmented Assignment Operators
Chapter Summary
Further Reading
Chapter 17. Iterators, Generators, and Classic Coroutines
What’s New in This Chapter
A Sequence of Words
Why Sequences Are Iterable: The iter Function
Iterables Versus Iterators
Sentence Classes with __iter__
Lazy Sentences
When to Use Generator Expressions
An Arithmetic Progression Generator
Generator Functions in the Standard Library
Iterable Reducing Functions
Subgenerators with yield from
Generic Iterable Types
Classic Coroutines
Chapter Summary
Further Reading
Chapter 18. with, match, and else Blocks
What’s New in This Chapter
Context Managers and with Blocks
Pattern Matching in lis.py: A Case Study
Do This, Then That: else Blocks Beyond if
Chapter Summary
Further Reading
Chapter 19. Concurrency Models in Python
What’s New in This Chapter
The Big Picture
A Bit of Jargon
A Concurrent Hello World
The Real Impact of the GIL
A Homegrown Process Pool
Python in the Multicore World
Chapter Summary
Further Reading
Chapter 20. Concurrent Executors
What’s New in This Chapter
Concurrent Web Downloads
Launching Processes with concurrent.futures
Experimenting with Executor.map
Downloads with Progress Display and Error Handling
Chapter Summary
Further Reading
Chapter 21. Asynchronous Programming
What’s New in This Chapter
A Few Definitions
An asyncio Example: Probing Domains
New Concept: Awaitable
Downloading with asyncio and HTTPX
Asynchronous Context Managers
Enhancing the asyncio Downloader
Delegating Tasks to Executors
Writing asyncio Servers
Asynchronous Iteration and Asynchronous Iterables
async Beyond asyncio: Curio
Type Hinting Asynchronous Objects
How Async Works and How It Doesn’t
Chapter Summary
Further Reading
Chapter 22. Dynamic Attributes and Properties
What’s New in This Chapter
Data Wrangling with Dynamic Attributes
Computed Properties
Using a Property for Attribute Validation
A Proper Look at Properties
Coding a Property Factory
Handling Attribute Deletion
Essential Attributes and Functions for Attribute Handling
Chapter Summary
Further Reading
Chapter 23. Attribute Descriptors
What’s New in This Chapter
Descriptor Example: Attribute Validation
Overriding Versus Nonoverriding Descriptors
Methods Are Descriptors
Descriptor Usage Tips
Descriptor Docstring and Overriding Deletion
Chapter Summary
Further Reading
Chapter 24. Class Metaprogramming
What’s New in This Chapter
Classes as Objects
type: The Built-In Class Factory
A Class Factory Function
Introducing __init_subclass__
Enhancing Classes with a Class Decorator
What Happens When: Import Time Versus Runtime
Metaclasses 101
A Metaclass Solution for Checked
Metaclasses in the Real World
A Metaclass Hack with __prepare__
Wrapping Up
Chapter Summary
Further Reading
Afterword
Index
About the Author

Fluent Python

Book Details

Book Title

Author

Publisher

Publication Date

ISBN

Number of Pages

Language

Format

File Size

Subject

Table of Contents