scrapy安装
1. wheel
pip install wheel
2. lxml
http://www.lfd.uci.edu/~gohlke/pythonlibs/#lxml
3. PyOpenssl
https://pypi.python.org/pypi/pyOpenSSL#downloads
4. Twisted
http://www.lfd.uci.edu/~gohlke/pythonlibs/#twisted
5. Pywin32
https://sourceforge.net/projects/pywin32/files/pywin32/Build%20220/
6. Scrapy
pip install scrapy