Book Image

Hands-On Reactive Programming with Python

By : Romain Picard
Book Image

Hands-On Reactive Programming with Python

By: Romain Picard

Overview of this book

Reactive programming is central to many concurrent systems, but it’s famous for its steep learning curve, which makes most developers feel like they're hitting a wall. With this book, you will get to grips with reactive programming by steadily exploring various concepts This hands-on guide gets you started with Reactive Programming (RP) in Python. You will learn abouta the principles and benefits of using RP, which can be leveraged to build powerful concurrent applications. As you progress through the chapters, you will be introduced to the paradigm of Functional and Reactive Programming (FaRP), observables and observers, and concurrency and parallelism. The book will then take you through the implementation of an audio transcoding server and introduce you to a library that helps in the writing of FaRP code. You will understand how to use third-party services and dynamically reconfigure an application. By the end of the book, you will also have learned how to deploy and scale your applications with Docker and Traefik and explore the significant potential behind the reactive streams concept, and you'll have got to grips with a comprehensive set of best practices.
Table of Contents (16 chapters)

Introduction to Cyclotron

So far, the code written in this book was done completely from scratch. This is great to learn how to write code, but there is some boilerplate that always has to be written:

  • Creating and running the AsyncIO event loop
  • Managing observable cycles with subjects

Cyclotron is a set of Python packages that aims at implementing this boilerplate instead of having to rewrite it again and again. It also defines a common prototype for ReactiveX components and drivers so that they can be shared between projects. Cyclotron is composed of several packages:

  • cyclotron: This is a very small package that manages the connection of observables, with the support of observable cycles.
  • cyclotron-std: This package contains drivers and helpers to use some features of the Python standard library with RxPY.
  • cyclotron-aio: This package contains helpers to deal with AsyncIO....