Learning Scrapy ePub (Adobe DRM) download by Dimitrios Kouzis-Loukas

Learning Scrapy

Packt Publishing
Publication date: January 2016
ISBN: 9781784390914
Digital Book format: ePub (Adobe DRM)

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Learn the art of efficient web scraping and crawling with Python About This Book • Extract data from any source to perform real time analytics. • Full of techniques and examples to help you crawl websites and extract data within hours. • A hands-on guide to web scraping and crawling with real-life problems and solutions Who This Book Is For If you are a software developer, data scientist, NLP or machine-learning enthusiast or just need to migrate your company's wiki from a legacy platform, then this book is for you. It is perfect for someone , who needs instant access to large amounts of semi-structured data effortlessly. What You Will Learn • Understand HTML pages and write XPath to extract the data you need • Write Scrapy spiders with simple Python and do web crawls • Push your data into any database, search engine or analytics system • Configure your spider to download files, images and use proxies • Create efficient pipelines that shape data in precisely the form you want • Use Twisted Asynchronous API to process hundreds of items concurrently • Make your crawler super-fast by learning how to tune Scrapy's performance • Perform large scale distributed crawls with scrapyd and scrapinghub In Detail This book covers the long awaited Scrapy v 1.0 that empowers you to extract useful data from virtually any source with very little effort. It starts off by explaining the fundamentals of Scrapy framework, followed by a thorough description of how to extract data from any source, clean it up, shape it as per your requirement using Python and 3rd party APIs. Next you will be familiarised with the process of storing the scrapped data in databases as well as search engines and performing real time analytics on them with Spark Streaming. By the end of this book, you will perfect the art of scarping data for your applications with ease Style and approach It is a hands on guide, with first few chapters written as a tutorial, aiming to motivate you and get you started quickly. As the book progresses, more advanced features are explained with real world examples that can be reffered while developing your own web applications.
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