Book Image

Hands-On Web Scraping with Python

By : Anish Chapagain
Book Image

Hands-On Web Scraping with Python

By: Anish Chapagain

Overview of this book

Web scraping is an essential technique used in many organizations to gather valuable data from web pages. This book will enable you to delve into web scraping techniques and methodologies. The book will introduce you to the fundamental concepts of web scraping techniques and how they can be applied to multiple sets of web pages. You'll use powerful libraries from the Python ecosystem such as Scrapy, lxml, pyquery, and bs4 to carry out web scraping operations. You will then get up to speed with simple to intermediate scraping operations such as identifying information from web pages and using patterns or attributes to retrieve information. This book adopts a practical approach to web scraping concepts and tools, guiding you through a series of use cases and showing you how to use the best tools and techniques to efficiently scrape web pages. You'll even cover the use of other popular web scraping tools, such as Selenium, Regex, and web-based APIs. By the end of this book, you will have learned how to efficiently scrape the web using different techniques with Python and other popular tools.
Table of Contents (16 chapters)
Free Chapter
Section 1: Introduction to Web Scraping
Section 2: Beginning Web Scraping
Section 3: Advanced Concepts
Section 4: Conclusion

Using web browser developer tools for accessing web content

In Chapter 1, Web Scraping Fundamentals, under the Data finding techniques (seeking data from the web) section and inside Developer tools (DevTools), we introduced browser-based DevTools to locate content and explore the various panels found. DevTools offers various functional panels, which provide us with supportive tools to manage related resources.

In this particular section, our motive will be specific to identifying the particular elements that hold the content we are looking for. This identification-based information, such as XPath expression, CSS query, or even DOM-based navigation flow will be beneficial while coding Scraper.

We will explore web pages using Google Chrome. Chrome has a built-in developer tool with plenty of features (available for element identification, selection, DOM navigation, and so on). In...