element, inside the <head> element of a HTML document * ``/html/head/title/text()`` : selects the text inside the aforementioned <title> element. * ``//td`` : selects all the <td> elements * ``//div[@class="mine"]`` : selects all div elements which contain an attribute class="mine" 轻量级爬虫: https://github.com/jmcarp/robobrowser

爬虫相关
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Selenium是自动化测试工具。它支持各种浏览器，包括 Chrome，Safari，Firefox 等主流界面式浏览器::

  pip install selenium   // 安装到/Library/Python/2.7/site-packages/

Selenium 2是 Selenium 和 WebDriver 两个项目的合并

chromedriver下载地址::

  https://sites.google.com/a/chromium.org/chromedriver/downloads
  

Scrapy项目——开源爬虫系统
========================


* ``/html/head/title`` : selects the <title> element, inside the <head> element of a HTML document
* ``/html/head/title/text()`` : selects the text inside the aforementioned <title> element.
* ``//td`` : selects all the <td> elements
* ``//div[@class="mine"]`` : selects all div elements which contain an attribute class="mine"


轻量级爬虫:

  https://github.com/jmcarp/robobrowser