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Beautiful Soup解析器比较
Home Web Front-end HTML Tutorial BeautifulSoup中各种html解析器的比较及使用_html/css_WEB-ITnose

BeautifulSoup中各种html解析器的比较及使用_html/css_WEB-ITnose

Jun 24, 2016 am 11:38 AM

Beautiful Soup解析器比较

·Beautiful Soup支持各种html解析器,包括python自带的标准库,还有其他的许多第三方库模块。其中一个就是lxml parser,至于lxml parser的安装,可以通过以下方法安装:

1)easy_install lxml   2)pip install lxml    

另外,python对于模块的安装,可以查看博客说明,分为两种:easy_install 和 pip.

另外一种纯python解析器为html5lib解析器,可以像web浏览器那样解析html页面,你可以通过下面两种方式安装html5lib:

1)easy_install html5lib   2)pip install html5lib

下面对各种html解析器的优缺点做一下对比:


解析器 使用方法 优点 缺点
Python’s html.parser BeautifulSoup(markup,"html.parser")
  • python自身带有
  • 速度比较快
  • 能较好兼容 (as of Python 2.7.3 and 3.2.)
  • 不能很好地兼容(before Python 2.7.3 or 3.2.2)
    lxml’s HTML parser BeautifulSoup(markup,"lxml")
  • 速度很快
  • 兼容性好
  • External C dependency
    lxml’s XML parser BeautifulSoup(markup, "lxml-xml") BeautifulSoup(markup,"xml")    速度很快
  • The only currently supported XML parser
  • External C dependency
    html5lib BeautifulSoup(markup, "html5lib") 1)兼容性很好
    2)可以像web浏览器一样解析html页面
    3) Creates valid HTML5
  • 速度很慢
  • External Python dependency

  • 如果你想追求速度的话,建议使用 lxml,如果你使用的python版本2.x是2.7.3之前的版本,或者python3.x的是3.2.2之前的版本,你很有必要安装使用 html5lib或lxml使用,因为python内建的html解析器不能很好地适应于这些老版本。



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