npm 安装 sass-loader 失败的解决办法

You got to add python to your PATH variable. One thing you can do is Edit your Path variable now and add

;%PYTHON%;

Your variable PYTHON should point to the root directory of your python installation.

PATH里增加

;%PYTHON%;

原文：https://stackoverflow.com/questions/34372618/npm-cant-find-python-executable-python-you-can-set-the-python-env-variabl