gyp ERR! configure errorgyp ERR! stack Error: Can't find Python executable "python", you can set the PYTHON env variable.gyp ERR! stack     at failNoPython (C:\Users\Administrator\AppData\Roaming\npm\node_modules\cnpm\node_modules\npminstall\node_modules\node-gyp\lib\configure.js:401:14)gyp ERR! stack     at C:\Users\Administrator\AppData\Roaming\npm\node_modules\cnpm\node_modules\npminstall\node_modules\node-gyp\lib\configure.js:356:11按http://www.ruanyifeng.com/blog/2016/01/babel.html里面的教程，我在文件夾內通過安裝 cnpm install --save-dev babel-cli 出錯了，是不是要安裝python，求分析謝謝！