本文實例講述了Python Scrapy框架：通用爬蟲之CrawlSpider用法。分享給大家供大家參考，具體如下：

步驟01: 創(chuàng)建爬蟲項目

scrapy startproject quotes

步驟02: 創(chuàng)建爬蟲模版

scrapy genspider -t quotes quotes.toscrape.com

步驟03: 配置爬蟲文件quotes.py

import scrapyfrom scrapy.spiders import CrawlSpider, Rulefrom scrapy.linkextractors import LinkExtractorclass Quotes(CrawlSpider): # 爬蟲名稱 name = 'get_quotes' allow_domain = [’quotes.toscrape.com’] start_urls = [’http://quotes.toscrape.com/’]# 設(shè)定規(guī)則 rules = ( # 對于quotes內(nèi)容頁URL，調(diào)用parse_quotes處理， # 并以此規(guī)則跟進(jìn)獲取的鏈接 Rule(LinkExtractor(allow=r’/page/d+’), callback=’parse_quotes’, follow=True), # 對于author內(nèi)容頁URL，調(diào)用parse_author處理，提取數(shù)據(jù) Rule(LinkExtractor(allow=r’/author/w+’), callback=’parse_author’) )# 提取內(nèi)容頁數(shù)據(jù)方法 def parse_quotes(self, response): for quote in response.css('.quote'): yield {’content’: quote.css(’.text::text’).extract_first(), ’author’: quote.css(’.author::text’).extract_first(), ’tags’: quote.css(’.tag::text’).extract() } # 獲取作者數(shù)據(jù)方法 def parse_author(self, response): name = response.css(’.author-title::text’).extract_first() author_born_date = response.css(’.author-born-date::text’).extract_first() author_bron_location = response.css(’.author-born-location::text’).extract_first() author_description = response.css(’.author-description::text’).extract_first() return ({’name’: name, ’author_bron_date’: author_born_date, ’author_bron_location’: author_bron_location, ’author_description’: author_description })

步驟04: 運行爬蟲

scrapy crawl quotes

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希望本文所述對大家基于Scrapy框架的Python程序設(shè)計有所幫助。