安装scrapy

环境：windows10 64bit

需要安装:

1. wheel

pip install wheel

2. lxml

pip install whell

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