npm install bcrypt,node-sass –save引起了让人很烦恼的错误，整个人心情都不好了。下边是个人的解决方法：
错误一
缺少python环境：
G:\nodejs\moviesite\node_modules\bcrypt>if not defined npm_config_node_gyp (node "D:\Program Files\nodejs\node_modules\npm\bin\node-gyp-bin\\..\..\node_modules\node-gyp\bin\node-gyp.js" rebuild ) else (rebuild) gyp ERR! configure error gyp ERR! stack Error: Can't find Python executable "python", you can set the PYT HON env variable. gyp ERR! stack at failNoPython (D:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\configure.js:103:14) gyp ERR! stack at D:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\configure.js:64:11 gyp ERR! stack at FSReqWrap.oncomplete (evalmachine.<anonymous>:95:15) gyp ERR! System Windows_NT 6.3.9600 gyp ERR! command "node" "D:\\Program Files\\nodejs\\node_modules\\npm\\node_modu les\\node-gyp\\bin\\node-gyp.js" "rebuild" gyp ERR! cwd G:\nodejs\moviesite\node_modules\bcryptgyp ERR! node -v v0.12.2 gyp ERR! node-gyp -v v1.0.3 gyp ERR! not ok npm ERR! Windows_NT 6.3.9600 npm ERR! argv "D:\\Program Files\\nodejs\\\\node.exe" "D:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "install" "bcrypt" "--save" npm ERR! node v0.12.2 npm ERR! npm v2.7.4 npm ERR! code ELIFECYCLE npm ERR! bcrypt@0.8.3 install: `node-gyp rebuild` npm ERR! Exit status 1 npm ERR! npm ERR! Failed at the bcrypt@0.8.3 install script 'node-gyp rebuild'. npm ERR! This is most likely a problem with the bcrypt package, npm ERR! not with npm itself. npm ERR! Tell the author that this fails on your system: npm ERR! node-gyp rebuild npm ERR! You can get their info via: npm ERR! npm owner ls bcrypt npm ERR! There is likely additional logging output above. npm ERR! Please include the following file with any support request: npm ERR! G:\nodejs\moviesite\npm-debug.log
安装python解决，python(v2.7 recommended, v3.x.x is not supported)
下载：http://www.python.org/ftp/python/2.7.3/python-2.7.3.msi
错误二：
在此解决方案中一次生成一个项目。若要启用并行生成，请添加“/m”开关。
MSBUILD : error MSB3428: 未能加载 Visual C++ 组件“VCBuild.exe”。要解决此问题，
1) 安装 .NET Fram
ework 2.0 SDK；2) 安装 Microsoft Visual Studio 2005；或 3) 如果将该组件安装到了
其他位置，请将其位置添加到系统
路径中。 [G:\nodejs\moviesite\node_modules\bcrypt\build\binding.sln]
gyp ERR! build error
如图：
需要安装Microsoft Visual Studio Express 2013 for Windows Desktop
(版本应该不限制，我安装的是上边的版本)
安装成功，但是出现了警告，警告不影响bcrypt的使用
