Search icon CANCEL
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Conferences
Free Learning
Arrow right icon
Arrow up icon
GO TO TOP
Learning Concurrency in Python

You're reading from   Learning Concurrency in Python Build highly efficient, robust, and concurrent applications

Arrow left icon
Product type Paperback
Published in Aug 2017
Publisher Packt
ISBN-13 9781787285378
Length 360 pages
Edition 1st Edition
Languages
Concepts
Arrow right icon
Author (1):
Arrow left icon
Elliot Forbes Elliot Forbes
Author Profile Icon Elliot Forbes
Elliot Forbes
Arrow right icon
View More author details
Toc

Table of Contents (13) Chapters Close

Preface 1. Speed It Up! FREE CHAPTER 2. Parallelize It 3. Life of a Thread 4. Synchronization between Threads 5. Communication between Threads 6. Debug and Benchmark 7. Executors and Pools 8. Multiprocessing 9. Event-Driven Programming 10. Reactive Programming 11. Using the GPU 12. Choosing a Solution

Improving our crawler


Now that we've had an in-depth look at both ThreadPoolExecutors and ProcessPoolExecutors, it's time to actually put these newly learned concepts into practice. In Chapter 5, Communication between Threads, we started developing a multithreaded web crawler that was able to crawl every available link on a given website.

Note

The full source code for this Python web crawler can be found at this link: https://github.com/elliotforbes/python-crawler.

It didn't, however, output the results in the most readable format, and the code could be improved using ThreadPoolExecutors. So, let's have a look at implementing both more readable code and more readable results.

The plan

Before we get started, we need to define a general plan as to how we are going to improve our crawler.

New improvements

A few examples of the improvements we might wish to make are as follows:

  • We want to refactor our code to use ThreadPoolExecutors
  • We want to output the results of a crawl in a more readable format such...
lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at €18.99/month. Cancel anytime