March 2024
Intermediate to advanced
592 pages
14h 8m
German
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KAPITEL 24
Web-Scraping
Einführung
Dieses Kapitel führt Sie in die Grundlagen des Web-Scrapings mit rvest ein. Web-Scraping (übersetzt etwa »im Web schürfen«) ist ein nützliches Tool, um Daten aus Webseiten zu extrahieren. Manche Websites bieten eine API, eine Reihe von strukturierten HTTP-Anfragen, die Daten als JSON zurückgeben. Diese Ergebnisse können Sie dann mit den Techniken aus Kapitel 23 weiterverarbeiten. Wo immer es möglich ist, sollten Sie die API1 verwenden, da sie in der Regel zuverlässigere Daten liefert. Die Programmierung mit Web-APIs ginge allerdings über den Rahmen dieses Buchs hinaus. Stattdessen befassen wir uns mit Scraping, einer Technik, die unabhängig davon funktioniert, ob eine Site eine API bereitstellt oder nicht.
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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.
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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.