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Gábor László Hajba - Website Scraping with Python: Using BeautifulSoup and Scrapy

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Gábor László Hajba Website Scraping with Python: Using BeautifulSoup and Scrapy
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Closely examine website scraping and data processing: the technique of extracting data from websites in a format suitable for further analysis. Youll review which tools to use, and compare their features and efficiency. Focusing on BeautifulSoup4 and Scrapy, this concise, focused book highlights common problems and suggests solutions that readers can implement on their own.

Website Scraping with Python starts by introducing and installing the scraping tools and explaining the features of the full application that readers will build throughout the book. Youll see how to use BeautifulSoup4 and Scrapy individually or together to achieve the desired results. Because many sites use JavaScript, youll also employ Selenium with a browser emulator to render these sites and make them ready for scraping.

By the end of this book, youll have a complete scraping application to use and rewrite to suit your needs. As a bonus, the author shows you options of how to deploy your spiders into the Cloud to leverage your computer from long-running scraping tasks.

What Youll Learn

  • Install and implement scraping tools individually and together

  • Run spiders to crawl websites for data from the cloud

  • Work with emulators and drivers to extract data from scripted sites

Who This Book Is For

Readers with some previous Python and software development experience, and an interest in website scraping.

Gábor László Hajba: author's other books


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Gbor Lszl Hajba Website Scraping with Python Using BeautifulSoup and Scrapy - photo 1
Gbor Lszl Hajba
Website Scraping with Python Using BeautifulSoup and Scrapy
Gbor Lszl Hajba Sopron Hungary Any source code or other supplementary - photo 2
Gbor Lszl Hajba
Sopron, Hungary

Any source code or other supplementary material referenced by the author in this book is available to readers on GitHub via the books product page, located at www.apress.com/9781484239247 . For more detailed information, please visit http://www.apress.com/source-code .

ISBN 978-1-4842-3924-7 e-ISBN 978-1-4842-3925-4
https://doi.org/10.1007/978-1-4842-3925-4
Library of Congress Control Number: 2018957273
Gbor Lszl Hajba 2018
This work is subject to copyright. All rights are reserved by the Publisher, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilms or in any other physical way, and transmission or information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed.
Trademarked names, logos, and images may appear in this book. Rather than use a trademark symbol with every occurrence of a trademarked name, logo, or image we use the names, logos, and images only in an editorial fashion and to the benefit of the trademark owner, with no intention of infringement of the trademark. The use in this publication of trade names, trademarks, service marks, and similar terms, even if they are not identified as such, is not to be taken as an expression of opinion as to whether or not they are subject to proprietary rights.
While the advice and information in this book are believed to be true and accurate at the date of publication, neither the authors nor the editors nor the publisher can accept any legal responsibility for any errors or omissions that may be made. The publisher makes no warranty, express or implied, with respect to the material contained herein.
Distributed to the book trade worldwide by Springer Science+Business Media New York, 233 Spring Street, 6th Floor, New York, NY 10013. Phone 1-800-SPRINGER, fax (201) 348-4505, e-mail orders-ny@springer-sbm.com, or visit www.springeronline.com. Apress Media, LLC is a California LLC and the sole member (owner) is Springer Science + Business Media Finance Inc (SSBM Finance Inc). SSBM Finance Inc is a Delaware corporation.

To those who are restless, like me, and always want to learn something new.

Introduction

Welcome to our journey together exploring website scraping solutions using the Python programming language!

As the title already tells you, this book is about website scraping with Python. I distilled my knowledge into this book to give you a useful manual if you want to start data gathering from websites.

Website scraping is (in my opinion) an emerging topic.

I expect you have Python programming knowledge. This means I wont clarify every code block I write or constructs I use. But because of this, youre allowed to differ: every programmer has his/her own unique coding style, and your coding results can be different than mine.

This book is split into six chapters:
  1. Getting Started is to get you started with this book: you can learn what website scraping is and why it worth writing a book about this topic.

  2. Enter the Requirements introduces the requirements we will use to implement website scrapers in the follow-up chapters.

  3. UsingBeautiful Soup introduces you to Beautiful Soup, an HTML content parser that you can use to write website scraper scripts. We will implement a scraper to gather the requirements of Chapter using Beautiful Soup.

  4. UsingScrapy introduces you to Scrapy, the (in my opinion) best website scraping toolbox available for the Python programming language. We will use Scrapy to implement a website scraper to gather the requirements of Chapter .

  5. Handling JavaScript shows you options for how you can deal with websites that utilize JavaScript to load data dynamically and through this, give users a better experience. Unfortunately, this makes basic website scraping a torture but there are options that you can rely on.

  6. Website Scraping in the Cloud moves your scrapers from running on your computer locally to remote computers in the Cloud. Ill show you free and paid providers where you can deploy your spiders and automate the scraping schedules.

You can read this book from cover to cover if you want to learn the different approaches of website scraping with Python. If youre interested only in a specific topic, like Scrapy for example, you can jump straight to Chapter because it contains the description of the data gathering task we will implement in the vast part of the book.

Acknowledgments

Many people have contributed to what is good in this book. Remaining errors and problems are the authors alone.

Thanks to Apress for making this book happen. Without them, Id have never considered approaching a publisher with my book idea.

Thanks to the editors, especially Jill Balzano and James Markham. Their advices made this book much better.

Thanks to Chaim Krause, who pointed out missing technical information that may be obvious to me but not for the readers.

Last but not least, a big thank you to my wife, gnes, for enduring the time invested in this book.

I hope this book will be a good resource to get your own website scraping projects started!

Table of Contents
Index
About the Author and About the Technical Reviewer
About the Author
Gbor Lszl Hajba
is a Senior Consultant at EBCONT enterprise technologies who specializes in - photo 3

is a Senior Consultant at EBCONT enterprise technologies, who specializes in Java, Python, and Crystal. He is responsible for designing and developing customer needs in the enterprise software world. He has also held roles as an Advanced Software Engineer with Zhlke Engineering, and as a freelance developer with Porsche Informatik. He considers himself a workaholic, (hard)core and well-grounded developer, pragmatic minded, and freak of portable apps and functional code.

He currently resides in Sopron, Hungary with his loving wife, gnes.

About the Technical Reviewer
Chaim Krause
is an expert computer programmer with over thirty years of experience to prove - photo 4

is an expert computer programmer with over thirty years of experience to prove it. He has worked as a lead tech support engineer for ISPs as early as 1995, as a senior developer support engineer with Borland for Delphi, and has worked in Silicon Valley for over a decade in various roles, including technical support engineer and developer support engineer. He is currently a military simulation specialist for the US Armys Command and General Staff College, working on projects such as developing serious games for use in training exercises.

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