building 'lxml.etree' extension
error: Microsoft Visual C++ 14.0 is required. Get it with "Build Tools for Visual Studio": https://visualstudio.microsoft.com/downloads/
试试下载安装全套运行环境,微软官方的:https://download.microsoft.com/download/5/F/7/5F7ACAEB-8363-451F-9425-68A90F98B238/visualcppbuildtools_full.exe
还不行就在https://visualstudio.microsoft.com/zh-hans/vs/older-downloads/ 找相关的包安装即可