June 2015
Intermediate to advanced
320 pages
7h 18m
English
Content preview from Learning Python NetworkingBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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HTML and screen scraping
Although more and more services are offering their data through APIs, when a service doesn't do this then the only way of getting the data programmatically is to download its web pages and then parse the HTML source code. This technique is called screen scraping.
Though it sounds simple enough in principle, screen scraping should be approached as a last resort. Unlike XML, where the syntax is strictly enforced and data structures are usually reasonably stable and sometimes even documented, the world of web page source code is a messy one. It is a fluid place, where the code can change unexpectedly and in a way that can completely break your script and force you to rework the parsing logic from scratch.
Still, it is sometimes ...
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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.