February 2018
Beginner to intermediate
364 pages
10h 32m
English
Content preview from Python Web Scraping Cookbook
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How it works
Lets start with the code in them main script file, 08/05_wikipedia_scrapy.py. This starts with creating a WikipediaSpider object and running the crawl:
process = CrawlerProcess({ 'LOG_LEVEL': 'ERROR', 'DEPTH_LIMIT': 1})process.crawl(WikipediaSpider)spider = next(iter(process.crawlers)).spiderprocess.start()
This tells Scrapy that we want to run it for one level of depth, and we get an instance of the crawler as we want to inspect its properties which are the result of the crawl. The results are then printed with the following:
print("-"*60)for pm in spider.linked_pages: print(pm.depth, pm.title, pm.child_title)
Each result from the crawler is stored in the linked_pages property. Each of those objects is represented by several ...
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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.