Python開源爬蟲框架：Grab

jopen 9年前發布 | 35K 次閱讀 Grab 網絡爬蟲

Grab是一個Python開源Web爬蟲框架。Grab提供非常多實用的方法來爬取網站和處理爬到的內容：

  • Automatic cookies (session) support
  • HTTP and SOCKS proxy with and without authorization
  • Keep-Alive support
  • IDN support
  • Tools to work with web forms
  • Easy multipart file uploading
  • Flexible customization of HTTP requests
  • Automatic charset detection
  • Powerful API of extracting info from HTML documents with XPATH queries
  • Asynchronous API to make thousands of simultaneous queries. This part of library called Spider and it is too big to even list its features in this README.
  • Python 3 ready

Grab Example 

from grab import Grab
import logging

logging.basicConfig(level=logging.DEBUG)
g = Grab()
g.go('https://github.com/login')
g.set_input('login', '***')
g.set_input('password', '***')
g.submit()
g.doc.save('/tmp/x.html')

g.doc('//span[contains(@class, "octicon-sign-out")]').assert_exists()
home_url = g.doc('//a[contains(@class, "header-nav-link name")]/@href').text()
repo_url = home_url + '?tab=repositories'

g.go(repo_url)
for elem in g.doc.select('//h3[@class="repo-list-name"]/a'):
    print('%s: %s' % (elem.text(),
                      g.make_url_absolute(elem.attr('href'))))

項目主頁：http://www.baiduhome.net/lib/view/home/1440858338263

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