July 2017
Beginner to intermediate
312 pages
7h 27m
English
Content preview from Python Social Media Analytics
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Scraping and crawling
Scraping (or web scraping) is a technique to extract information from websites. When we do not have access to APIs, we can only retrieve visible information from HTML generated on a web page. In order to perform the task, we need a scraper that is able to extract information that we need and structure it in a predefined format. The next step is to build a crawler—a tool to follow links on a website and extract the information from all sub pages. When we decide to build a scraping strategy, we have to take into consideration the terms and conditions, as some websites do not allow scraping.
Python offers very useful tools to create scrapers and crawlers, such as beautifulsoup and scrapy.
pip3 install bs4, scrapy
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.