May 2017
Beginner to intermediate
220 pages
5h 2m
English
Content preview from Python Web Scraping - Second Edition
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Scraping results
Now that we have complete implementations for each scraper, we will test their relative performance with this snippet. The imports in the code expect your directory structure to be similar to the book's repository, so please adjust as necessary:
import timeimport refrom chp2.all_scrapers import re_scraper, bs_scraper, lxml_scraper, lxml_xpath_scraperfrom chp1.advanced_link_crawler import downloadNUM_ITERATIONS = 1000 # number of times to test each scraperhtml = download('http://example.webscraping.com/places/view/United-Kingdom-239')scrapers = [ ('Regular expressions', re_scraper), ('BeautifulSoup', bs_scraper), ('Lxml', lxml_scraper), ('Xpath', lxml_xpath_scraper)]for name, scraper in scrapers: # record start time of scrape ...Become 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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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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