1. 安装scrapy 出现以下
  2.  
  3. 错误：
  4.  
  5. error: Microsoft Visual C++ 14.0 is required. Get it with "Microsoft Visual C++ Build Tools": http://landinghub.visualstudio.com/visual-cpp-build-tools 
  6.  
  7. 首先浏览器输入： https://www.lfd.uci.edu/~gohlke/pythonlibs/#twisted
  8.  
  9. 下载对应版本twisted
  10.  
  11. 笔者下载版本为：Twisted--cp36-cp36m-win_amd64.whl
  12. 下载到本地路径为：D:\Documents\Downloads\Twisted--cp36-cp36m-win_amd64.whl
  13.  
  14. 进入命令行模式：安装
  15.  
  16. pip install D:\Documents\Downloads\Twisted--cp36-cp36m-win_amd64.whl
  17.  
  18. pip install scrapy 
  19.  
  20. 问题解决

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