Python Essentials

封面

版权信息

Credits

About the Author

About the Reviewers

www.PacktPub.com

Preface

Chapter 1. Getting Started

Installation or upgrade

Using the Read-Evaluate-Print Loop (REPL)

Interacting with the help subsystem

Creating simple script files

The Python ecosystem

Looking at other Python interpreters

Summary

Chapter 2. Simple Data Types

Introducing the built-in operators

The numeric tower

The math libraries

Using bits and Boolean values

Working with sequences

Using string and bytes values

Using the tuple collection

The None object

The consequences of immutability

Using the built-in conversion functions

Summary

Chapter 3. Expressions and Output

Expressions operators and data types

The print() function

Examining syntax rules

Splitting partitioning and joining strings

Summary of the standard string libraries

Summary

Chapter 4. Variables Assignment and Scoping Rules

Simple assignment and variables

Multiple assignment

Using the head *tail assignment

Augmented assignment

The input() function

Python language concepts

The Python namespace concept

Summary

Chapter 5. Logic Comparisons and Conditions

Boolean data and the bool() function

Comparison operators

Logic operators – and or not if-else

The if-elif-else statement

The pass statement as a placeholder

The assert statement

The logic of the None object

Summary

Chapter 6. More Complex Data Types

The mutability and immutability distinction

Using the list collection

Using collection functions

Using the set collection

Mappings

Processing collections with the for statement

Iterating with the while statement

The continue and break statements

Using the else clause on a loop

Summary

Chapter 7. Basic Function Definitions

Looking at the five kinds of callables

Defining functions with positional parameters

Mutable and immutable argument values

Defining optional parameters via default values

Using the "everything else" notations of * and **

Nested function definitions

Working with namespaces

Defining lambdas

Writing additional function annotations

Summary

Chapter 8. More Advanced Functions

Using the for statement with iterable collections

Consequences and next steps

Using generator expressions and comprehensions

Defining generator functions with the yield statement

Using the higher-order functions

Using the built-in reductions – max min and reduce

Three ways to sort a sequence

Functional programming design patterns

Summary

Chapter 9. Exceptions

The core exception concept

Using the try and except statements

Matching exception classes in an except clause

Creating our own exceptions

Using a finally clause

Use cases for exceptions

Issuing warnings instead of exceptions

Permission versus forgiveness – a Pythonic approach

Summary

Chapter 10. Files Databases Networks and Contexts

The essential file concept

Using a context manager via the with statement

Using the shelve module as a database

Web services and Internet protocols

Physical format considerations