Book Image

Modern Python Standard Library Cookbook

By : Alessandro Molina
Book Image

Modern Python Standard Library Cookbook

By: Alessandro Molina

Overview of this book

The Python 3 Standard Library is a vast array of modules that you can use for developing various kinds of applications. It contains an exhaustive list of libraries, and this book will help you choose the best one to address specific programming problems in Python. The Modern Python Standard Library Cookbook begins with recipes on containers and data structures and guides you in performing effective text management in Python. You will find Python recipes for command-line operations, networking, filesystems and directories, and concurrent execution. You will learn about Python security essentials in Python and get to grips with various development tools for debugging, benchmarking, inspection, error reporting, and tracing. The book includes recipes to help you create graphical user interfaces for your application. You will learn to work with multimedia components and perform mathematical operations on date and time. The recipes will also show you how to deploy different searching and sorting algorithms on your data. By the end of the book, you will have acquired the skills needed to write clean code in Python and develop applications that meet your needs.
Table of Contents (21 chapters)
Title Page
Copyright and Credits
Packt Upsell
Contributors
Preface
Index

AsyncIO


While asynchronous solutions have been around for years, they are getting more and more common these days. The primary reason is that having an application without thousands of concurrent users is not an uncommon scenario anymore; it's actually the norm for a small/medium-sized application and we can scale to millions with major services used worldwide.

Being able to serve such volumes doesn't scale well with approaches based on threads or processes. Especially when many of the connections that users are triggering might be sitting there doing nothing most of the time. Think of a service such as Facebook Messenger or WhatsApp. Whichever you use, you probably send a message once in a while and most of the time your connection to the server is sitting there doing nothing. Maybe you are a heavy chatter and you receive a message every second, but that still means that out of the millions of clocks per second your computer can do, most of them will be doing nothing. Most of the heavy lifting...