python安装beautiful soup库，和requests库

查看python已有的库：help('modules')

1.安装beautifulsoup

1).下载beautiful soup

https://www.crummy.com/software/BeautifulSoup/

2).pip install beautifulsoup4

2.安装requests

1).下载requests

https://pypi.python.org/pypi/requests#downloads

2).安装

python setup.py install