报错内容：Microsoft Visual C++ 14.0 is required. Get it with "Microsoft Visual C++ Build Tools": http://landinghub.visualstudio.com/visual-cpp-build-tools

　　环境： win10   ， python3.6.3    安装scrapy。

解决方法：

　 1.下载依赖

　　打开网址 https://www.lfd.uci.edu/~gohlke/pythonlibs/#twisted

　　选择和自己的python版本.系统位数一致的进行下载，cp后面是Python版本，amd64代表64位

　　2.安装依赖

　　然后找到下载目录，进行安装。

pip install Twisted-18.4.-cp36-cp36m-win_amd64.whl

　 3.安装scrapy

　　安装完了之后，我们再来安装scrapy。

pip  install  scrapy

　　4.安装检验

　　验证是否安装好：

Scrapy version

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