BeautifulSoup库的安装

BeautifulSoup3已经停止开发，已经迁移至BeautifulSoup 4。BeautifulSoup 4 同时兼容Python2和Python3。

安装BeautifulSoup

• Debain/Ubuntu

apt-get install Python-bs4

• PyPi

easy_install beautifulsoup4
pip install beautifulsoup4

• 源码安装
  下载bs4源码

python setup.py install

解析器的安装

apt-get install Python-lxml
easy_install lxml
pip install lxml

解析器	使用方法
Python标准库	BeautifulSoup(markup, ‘html.parser’)
lxml HTML解析器	BeautifulSoup(markup, ‘lxml’)
lxml XML解析器	BeautifulSoup(markup, [‘lxml’, ‘xml’]) BeautifulSoup(markup, ‘xml’)
html5lib	BeautifulSoup(markup, ‘html5lib’)