Book Image

Learning Concurrency in Python

By : Elliot Forbes
Book Image

Learning Concurrency in Python

By: Elliot Forbes

Overview of this book

Python is a very high level, general purpose language that is utilized heavily in fields such as data science and research, as well as being one of the top choices for general purpose programming for programmers around the world. It features a wide number of powerful, high and low-level libraries and frameworks that complement its delightful syntax and enable Python programmers to create. This book introduces some of the most popular libraries and frameworks and goes in-depth into how you can leverage these libraries for your own high-concurrent, highly-performant Python programs. We'll cover the fundamental concepts of concurrency needed to be able to write your own concurrent and parallel software systems in Python. The book will guide you down the path to mastering Python concurrency, giving you all the necessary hardware and theoretical knowledge. We'll cover concepts such as debugging and exception handling as well as some of the most popular libraries and frameworks that allow you to create event-driven and reactive systems. By the end of the book, you'll have learned the techniques to write incredibly efficient concurrent systems that follow best practices.
Table of Contents (20 chapters)
Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface
Index

Defining your own thread-safe communication structures


Sometimes, standard communication primitives don't quite cut it, and we have to implement our own composite objects in order to communicate between threads.

A web Crawler example

Now that we've got a good handle of both our communication primitives as well as the synchronization primitives that we dealt with in the previous chapter, it's time to start putting these to good use.

What better way to put into practice our newfound knowledge than to build something interesting with it?

In this section of the chapter, we are going to build a very simple multithreaded web Crawler.

Requirements

Just like any real project, we first need to define a set of requirements. In other words, we need to know the general direction that we'll be working towards. For this project, we have the following requirements:

  • The web Crawler needs to utilize multiple threads
  • It should be able to crawl all the particular web pages of a website
  • It should be able to report back...