ionic 创建项目 npm 报错 npm WARN prefer global node-gyp@3.6.0 should be installed with -g

<span style="font-size:14px;">npm WARN prefer global node-gyp@3.6.0 should be installed with -g  
  
> node-sass@4.5.2 install E:\workspace_vscode\ww\node_modules\node-sass  
> node scripts/install.js  
  
Downloading binary from https://github.com/sass/node-sass/releases/download/v4.5                                                 .2/win32-x64-48_binding.node  
Cannot download "https://github.com/sass/node-sass/releases/download/v4.5.2/win3                                                 2-x64-48_binding.node":  
  
connect ETIMEDOUT 54.231.72.83:443  
  
Timed out whilst downloading the prebuilt binary  
  
Hint: If github.com is not accessible in your location  
      try setting a proxy via HTTP_PROXY, e.g.  
  
      export HTTP_PROXY=http://example.com:1234  
  
or configure npm proxy via  
  
      npm config set proxy http://example.com:8080  
  
> node-sass@4.5.2 postinstall E:\workspace_vscode\ww\node_modules\node-sass  
> node scripts/build.js  
  
Building: D:\nodejs\node.exe E:\workspace_vscode\ww\node_modules\node-gyp\bin\node-gyp.js rebuild --verbose --libsass_ext= --libsass_cflags= --libsass_l                                                 dflags= --libsass_library=  
gyp info it worked if it ends with ok  
gyp verb cli [ 'D:\\nodejs\\node.exe',  
gyp verb cli   'E:\\workspace_vscode\\ww\\node_modules\\node-gyp\\bin\\node-gyp.js',  
gyp verb cli   'rebuild',  
gyp verb cli   '--verbose',  
gyp verb cli   '--libsass_ext=',  
gyp verb cli   '--libsass_cflags=',  
gyp verb cli   '--libsass_ldflags=',  
gyp verb cli   '--libsass_library=' ]  
gyp info using node-gyp@3.6.0  
gyp info using node@6.9.5 | win32 | x64  
gyp verb command rebuild []  
gyp verb command clean []  
gyp verb clean removing "build" directory  
gyp verb command configure []  
gyp verb check python checking for Python executable "python2" in the PATH  
gyp verb `which` failed Error: not found: python2  
gyp verb `which` failed     at getNotFoundError (E:\workspace_vscode\ww\ node_modules\which\which.js:13:12)  
gyp verb `which` failed     at F (E:\workspace_vscode\ww\node_modules\which\which.js:68:19)  
gyp verb `which` failed     at E (E:\workspace_vscode\ww\node_modules\which\which.js:80:29)  
gyp verb `which` failed     at E:\workspace_vscode\ww\node_modules\which\which.js:89:16  
gyp verb `which` failed     at E:\workspace_vscode\ww\node_modules\isexe\index.js:42:5  
gyp verb `which` failed     at E:\workspace_vscode\ww\node_modules\isexe\windows.js:36:5  
gyp verb `which` failed     at FSReqWrap.oncomplete (fs.js:123:15)  
gyp verb `which` failed  python2 { Error: not found: python2  
gyp verb `which` failed     at getNotFoundError (E:\workspace_vscode\ww\node_modules\which\which.js:13:12)  
gyp verb `which` failed     at F (E:\workspace_vscode\ww\node_modules\which\which.js:68:19)  
gyp verb `which` failed     at E (E:\workspace_vscode\ww\node_modules\which\which.js:80:29)  
gyp verb `which` failed     at E:\workspace_vscode\ww\node_modules\which\which.js:89:16  
gyp verb `which` failed     at E:\workspace_vscode\ww\node_modules\isexe\index.js:42:5  
gyp verb `which` failed     at E:\workspace_vscode\ww\node_modules\isexe\windows.js:36:5  
gyp verb `which` failed     at FSReqWrap.oncomplete (fs.js:123:15) code: 'ENOENT' }  
gyp verb check python checking for Python executable "python" in the PATH  
gyp verb `which` succeeded python D:\Python\python.EXE  
gyp verb check python version `D:\Python\python.EXE -c "import platform; print(platform.python_version());"` returned: "3.6.1\r\n"  
gyp verb could not find "D:\Python\python.EXE". checking python launcher  
gyp verb could not find "D:\Python\python.EXE". guessing location  
gyp verb ensuring that file exists: C:\Python27\python.exe  
gyp ERR! configure error  
gyp ERR! stack Error: Can't find Python executable "D:\Python\python.EXE", you can set the PYTHON env variable.  
gyp ERR! stack     at Object.failNoPython (E:\workspace_vscode\ww\node_modules\node-gyp\lib\configure.js:482:19)  
gyp ERR! stack     at Object.<anonymous> (E:\workspace_vscode\ww\node_modules\node-gyp\lib\configure.js:508:16)  
gyp ERR! stack     at E:\workspace_vscode\ww\node_modules\graceful-fs\polyfills.js:284:29  
gyp ERR! stack     at FSReqWrap.oncomplete (fs.js:123:15)  
gyp ERR! System Windows_NT 6.1.7601  
gyp ERR! command "D:\\nodejs\\node.exe" "E:\\workspace_vscode\\ww\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild" "--verbose" "--libsass_ext=" "--l                                                 ibsass_cflags=" "--libsass_ldflags=" "--libsass_library="  
gyp ERR! cwd E:\workspace_vscode\ww\node_modules\node-sass  
gyp ERR! node -v v6.9.5  
gyp ERR! node-gyp -v v3.6.0  
gyp ERR! not ok  
Build failed with error code: 1</span>

在 node scripts/install.js 之后发现这么一句话

Cannot download "https://github.com/sass/node-sass/releases/download/v4.5.3/win32-x64-51_binding.node":

在网上下载，如果报错的版本和我的一样，可以用我下载好的文件  点击下载

下载完了之后把它注册成全局环境变量，两种方式：

第一种：直接右键我的电脑--》属性--》高级系统设置--》环境变量--》添加 SASS_BINARY_PATH

第二种：set XXX=文件路经--》set SASS_BINARY_PATH=F:\ww\tools\node-sass\win32-x64-46_binding.node

查看环境是否合适：echo %SASS_BINARY_PATH%

如果打印出来您配置好的文件地址那就ok了，

最后再来试试安装：npm i -g node-sass