解决Error: Can't find Python executable "python", you can set the PYTHON env variable

有时候安装node-sass时会遇到错误

 Error: Can't find Python executable "python", you can set the PYTHON env variable

解决环境： Windows 7 64位操作系统

npm install --global --production windows-build-tools

其他平台解决办法 https://github.com/nodejs/node-gyp