Web Scraping Framework
Project description
Grab
What is Grab?
Grab is a python web scraping framework. Grab provides tons of helpful methods to scrape web sites and to process the scraped content:
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'))))Grab::Spider Example
from grab.spider import Spider, Task
import logging
class ExampleSpider(Spider):
def task_generator(self):
for lang in ('python', 'ruby', 'perl'):
url = 'https://www.google.com/search?q=%s' % lang
yield Task('search', url=url, lang=lang)
def task_search(self, grab, task):
print('%s: %s' % (task.lang,
grab.doc('//div[@class="s"]//cite').text()))
logging.basicConfig(level=logging.DEBUG)
bot = ExampleSpider()
bot.run()Installation
Pip is recommended way to install Grab and its dependencies:
$ pip install -U grabSee details here http://docs.grablib.org/en/latest/usage/installation.html
Documentation and Help
Documentation: http://docs.grablib.org/en/latest/
English mailing list: http://groups.google.com/group/grab-users/
Russian mailing list: http://groups.google.com/group/python-grab/
Contribution
To report a bug please use github issue tracker: https://github.com/lorien/grab/issues
If you want to develop new feature in Grab please use issue tracker to describe what you want to do or contact me at lorien@lorien.name
Release history Release notifications | RSS feed
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