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Hands-On Web Scraping with Python

You're reading from   Hands-On Web Scraping with Python Perform advanced scraping operations using various Python libraries and tools such as Selenium, Regex, and others

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Product type Paperback
Published in Jul 2019
Publisher Packt
ISBN-13 9781789533392
Length 350 pages
Edition 1st Edition
Languages
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Author (1):
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Anish Chapagain Anish Chapagain
Author Profile Icon Anish Chapagain
Anish Chapagain
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Table of Contents (16) Chapters Close

Preface 1. Section 1: Introduction to Web Scraping
2. Web Scraping Fundamentals FREE CHAPTER 3. Section 2: Beginning Web Scraping
4. Python and the Web – Using urllib and Requests 5. Using LXML, XPath, and CSS Selectors 6. Scraping Using pyquery – a Python Library 7. Web Scraping Using Scrapy and Beautiful Soup 8. Section 3: Advanced Concepts
9. Working with Secure Web 10. Data Extraction Using Web-Based APIs 11. Using Selenium to Scrape the Web 12. Using Regex to Extract Data 13. Section 4: Conclusion
14. Next Steps 15. Other Books You May Enjoy

Managing scraped data

In this section, we will explore some tools and learn more about handling and managing the data that we have scraped or extracted from certain websites.

Data that's collected from websites using scraping scripts is known as raw data. This data might require some additional tasks to be performed on top of it before it can be processed further so that we can gain an insight on it. Therefore, raw data should be verified and processed (if required), which can be done by doing the following:

  • Cleaning: As the name suggests, this step is used to remove unwanted pieces of information, such as space and whitespace characters, and unwanted portions of text. The following code shows some relevant steps that were used in examples in previous chapters, such as Chapter 9, Using Regex to Extract Data, and Chapter 3, Using LXML, XPath, and CSS Selectors. Functions...
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