Asyncio Recipes : A Problem-Solution Approach

Get the most out of asyncio and find solutions to your most troubling Python programming problems. This book offers a pragmatic collection of recipes by going beyond online resources and docs to provide guidance on using this complex library. As such, you’ll see how to improve application performance and run computationally intensive programs faster. __asyncio Recipes__ starts with examples illustrating the primitives that come with the asyncio library, and explains how to determine if asyncio is the right choice for your application. It shows how to use asyncio to yield performance gains without multiple threads, and identifies common mistakes and how to prevent them. Later chapters cover error-handling, testing, and debugging. By the end of this book, you'll understand how asyncio runs behind the scenes, and be confident enough to contribute to asyncio-first projects. ## What You Will Learn * Discover quirky APIs such as the event loop policies * Write asyncio code with native coroutines * Use the ast module to find legacy asyncio code * Work with contextvars * See what a async context manager is and why a lot of asyncio APIs use them ## Who This Book Is For Experienced Python developers or hobbyists who want to understand asyncio and speed up their applications by adding concurrency to their toolkit. Get the most out of asyncio and find solutions to your most troubling Python programming problems. This book offers a pragmatic collection of recipes by going beyond online resources and docs to provide guidance on using this complex library. As such, you'll see how to improve application performance and run run I/O intensive programs faster. asyncio Recipes starts with examples illustrating the primitives that come with the asyncio library, and explains how to determine if asyncio is the right choice for your application. It shows how to use asyncio to yield performance gains without multiple threads, and identifies common mistakes and how to prevent them. Later chapters cover error-handling, testing, and debugging. By the end of this book, you'll understand how asyncio runs behind the scenes, and be confident enough to contribute to asyncio-first projects Front Matter ....Pages i-xxvi Preparing for the Recipes (Mohamed Mustapha Tahrioui)....Pages 1-4 Working with Event Loops (Mohamed Mustapha Tahrioui)....Pages 5-48 Working with Coroutines and Async/Await (Mohamed Mustapha Tahrioui)....Pages 49-75 Working with Async Generators (Mohamed Mustapha Tahrioui)....Pages 77-95 Working with Async Context Manager (Mohamed Mustapha Tahrioui)....Pages 97-112 Communication Between Asyncio Components (Mohamed Mustapha Tahrioui)....Pages 113-145 Synchronization Between Asyncio Components (Mohamed Mustapha Tahrioui)....Pages 147-164 Improving Asyncio Applications (Mohamed Mustapha Tahrioui)....Pages 165-205 Working with Network Protocols (Mohamed Mustapha Tahrioui)....Pages 207-253 Preventing Common Asyncio Mistakes (Mohamed Mustapha Tahrioui)....Pages 255-291 Back Matter ....Pages 293-315