Web Scraping with Python

Data Extraction from the Modern Web

Paperback Engels 2024 3e druk 9781098145354
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Samenvatting

If programming is magic, then web scraping is surely a form of wizardry. By writing a simple automated program, you can query web servers, request data, and parse it to extract the information you need. This thoroughly updated third edition not only introduces you to web scraping but also serves as a comprehensive guide to scraping almost every type of data from the modern web.

Part I focuses on web scraping mechanics: using Python to request information from a web server, performing basic handling of the server's response, and interacting with sites in an automated fashion. Part II explores a variety of more specific tools and applications to fit any web scraping scenario you're likely to encounter.

- Parse complicated HTML pages
- Develop crawlers with the Scrapy framework
- Learn methods to store the data you scrape
- Read and extract data from documents
- Clean and normalize badly formatted data
- Read and write natural languages
- Crawl through forms and logins
- Scrape JavaScript and crawl through APIs
- Use and write image-to-text software
- Avoid scraping traps and bot blockers
- Use scrapers to test your website

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Ryan Mitchell

Over Ryan Mitchell

Ryan Mitchell is a Software Engineer at LinkeDrive in Boston, where she develops their API and data analysis tools. She is a graduate of Olin College of Engineering, and is a Masters degree student at Harvard University School of Extension Studies. Prior to joining LinkeDrive, she was a Software Engineer working on web scraping and data analysis at Abine.

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Inhoudsopgave

Preface
What Is Web Scraping?
Why Web Scraping?
About This Book
Conventions Used in This Book
Using Code Examples
O’Reilly Online Learning
How to Contact Us
Acknowledgments

I. Building Scrapers
1. How the Internet Works
Networking
Physical Layer
Data Link Layer
Network Layer
Transport Layer
Session Layer
Presentation Layer
Application Layer
HTML
CSS
JavaScript
Watching Websites with Developer Tools

2. The Legalities and Ethics of Web Scraping
Trademarks, Copyrights, Patents, Oh My!
Copyright Law
Trespass to Chattels
The Computer Fraud and Abuse Act
robots.txt and Terms of Service
Three Web Scrapers
eBay v. Bidder’s Edge and Trespass to Chattels
United States v. Auernheimer and the Computer Fraud and Abuse Act
Field v. Google: Copyright and robots.txt

3. Applications of Web Scraping
Classifying Projects
E-commerce
Marketing
Academic Research
Product Building
Travel
Sales
SERP Scraping

4. Writing Your First Web Scraper
Installing and Using Jupyter
Connecting
An Introduction to BeautifulSoup
Installing BeautifulSoup
Running BeautifulSoup
Connecting Reliably and Handling Exceptions

5. Advanced HTML Parsing
Another Serving of BeautifulSoup
find() and find_all() with BeautifulSoup
Other BeautifulSoup Objects
Navigating Trees
Regular Expressions
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