问npm只是不安装节点sass

EN

---> npm install -g node-sass
C:\Users\rick\AppData\Roaming\npm\node-sass -> C:\Users\rick\AppData\Roaming\npm\node_modules\node-sass\bin\node-sass

> node-sass@4.5.3 install C:\Users\rick\AppData\Roaming\npm\node_modules\node-sass
> node scripts/install.js

Downloading binary from https://github.com/sass/node-sass/releases/download/v4.5.3/win32-x64-57_binding.node
Cannot download "https://github.com/sass/node-sass/releases/download/v4.5.3/win32-x64-57_binding.node":

connect ECONNREFUSED 127.0.0.1:443

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@4.5.3 postinstall C:\Users\rick\AppData\Roaming\npm\node_modules\node-sass
> node scripts/build.js

Building: C:\Program Files\nodejs\node.exe C:\Users\rick\AppData\Roaming\npm\node_modules\node-sass\node_modules\node-gyp\bin\node-gyp.js rebuild --verbose --libsass_ext= --libsass_cflags= --libsass_ldflags= --libsass_library=
gyp info it worked if it ends with ok
gyp verb cli [ 'C:\\Program Files\\nodejs\\node.exe',
gyp verb cli   'C:\\Users\\rick\\AppData\\Roaming\\npm\\node_modules\\node-sass\\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@3.6.2
gyp info using node@8.4.0 | 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 (C:\Users\rick\AppData\Roaming\npm\node_modules\node-sass\node_modules\which\which.js:13:12)
gyp verb `which` failed     at F (C:\Users\rick\AppData\Roaming\npm\node_modules\node-sass\node_modules\which\which.js:68:19)
gyp verb `which` failed     at E (C:\Users\rick\AppData\Roaming\npm\node_modules\node-sass\node_modules\which\which.js:80:29)
gyp verb `which` failed     at C:\Users\rick\AppData\Roaming\npm\node_modules\node-sass\node_modules\which\which.js:89:16
gyp verb `which` failed     at C:\Users\rick\AppData\Roaming\npm\node_modules\node-sass\node_modules\isexe\index.js:42:5
gyp verb `which` failed     at C:\Users\rick\AppData\Roaming\npm\node_modules\node-sass\node_modules\isexe\windows.js:36:5
gyp verb `which` failed     at FSReqWrap.oncomplete (fs.js:152:21)
gyp verb `which` failed  python2 { Error: not found: python2
gyp verb `which` failed     at getNotFoundError (C:\Users\rick\AppData\Roaming\npm\node_modules\node-sass\node_modules\which\which.js:13:12)
gyp verb `which` failed     at F (C:\Users\rick\AppData\Roaming\npm\node_modules\node-sass\node_modules\which\which.js:68:19)
gyp verb `which` failed     at E (C:\Users\rick\AppData\Roaming\npm\node_modules\node-sass\node_modules\which\which.js:80:29)
gyp verb `which` failed     at C:\Users\rick\AppData\Roaming\npm\node_modules\node-sass\node_modules\which\which.js:89:16
gyp verb `which` failed     at C:\Users\rick\AppData\Roaming\npm\node_modules\node-sass\node_modules\isexe\index.js:42:5
gyp verb `which` failed     at C:\Users\rick\AppData\Roaming\npm\node_modules\node-sass\node_modules\isexe\windows.js:36:5
gyp verb `which` failed     at FSReqWrap.oncomplete (fs.js:152:21)
gyp verb `which` failed   stack: 'Error: not found: python2\n    at getNotFoundError (C:\\Users\\rick\\AppData\\Roaming\\npm\\node_modules\\node-sass\\node_modules\\which\\which.js:13:12)\n    at F (C:\\Users\\rick\\AppData\\Roaming\\npm\\node_modules\\node-sass\\node_modules\\which\\which.js:68:19)\n    at E (C:\\Users\\rick\\AppData\\Roaming\\npm\\node_modules\\node-sass\\node_modules\\which\\which.js:80:29)\n    at C:\\Users\\rick\\AppData\\Roaming\\npm\\node_modules\\node-sass\\node_modules\\which\\which.js:89:16\n    at C:\\Users\\rick\\AppData\\Roaming\\npm\\node_modules\\node-sass\\node_modules\\isexe\\index.js:42:5\n    at C:\\Users\\rick\\AppData\\Roaming\\npm\\node_modules\\node-sass\\node_modules\\isexe\\windows.js:36:5\n    at FSReqWrap.oncomplete (fs.js:152:21)',
gyp verb `which` failed   code: 'ENOENT' }
gyp verb check python checking for Python executable "python" in the PATH
gyp verb `which` succeeded python C:\Program Files\Python36\python.EXE
gyp verb check python version `C:\Program Files\Python36\python.EXE -c "import platform; print(platform.python_version());"` returned: "3.6.2\r\n"
gyp verb could not find "C:\Program Files\Python36\python.EXE". checking python launcher
gyp verb could not find "C:\Program Files\Python36\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 "C:\Program Files\Python36\python.EXE", you can set the PYTHON env variable.
gyp ERR! stack     at PythonFinder.failNoPython (C:\Users\rick\AppData\Roaming\npm\node_modules\node-sass\node_modules\node-gyp\lib\configure.js:483:19)
gyp ERR! stack     at PythonFinder.<anonymous> (C:\Users\rick\AppData\Roaming\npm\node_modules\node-sass\node_modules\node-gyp\lib\configure.js:508:16)
gyp ERR! stack     at C:\Users\rick\AppData\Roaming\npm\node_modules\node-sass\node_modules\graceful-fs\polyfills.js:284:29
gyp ERR! stack     at FSReqWrap.oncomplete (fs.js:152:21)
gyp ERR! System Windows_NT 10.0.15063
gyp ERR! command "C:\\Program Files\\nodejs\\node.exe" "C:\\Users\\rick\\AppData\\Roaming\\npm\\node_modules\\node-sass\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild" "--verbose" "--libsass_ext=" "--libsass_cflags=" "--libsass_ldflags=" "--libsass_library="
gyp ERR! cwd C:\Users\rick\AppData\Roaming\npm\node_modules\node-sass
gyp ERR! node -v v8.4.0
gyp ERR! node-gyp -v v3.6.2
gyp ERR! not ok
Build failed with error code: 1
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! node-sass@4.5.3 postinstall: `node scripts/build.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the node-sass@4.5.3 postinstall script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\rick\AppData\Roaming\npm-cache\_logs\2017-09-10T18_52_13_062Z-debug.log

⚡ rick@DESKTOP-1NVA03E  ~  $reg = "HKCU:\Software\Microsoft\Windows\CurrentVersion\Internet Settings"

⚡ rick@DESKTOP-1NVA03E  ~  $settings = Get-ItemProperty -Path $reg                                                    

⚡ rick@DESKTOP-1NVA03E  ~  $settings.ProxyServer
127.0.0.1:1080 

⚡ rick@DESKTOP-1NVA03E  ~  $settings.ProxyEnable
0