解决问题
gyp verb ensuring that file exists: C:\Python27\python.exe gyp ERR! configure
error gyp ERR! stack Error: Can't find Python executable "F:\Program
Files\Python\Python36\python.EXE", you can set the PYTHON env variable. gyp
ERR! stack at PythonFinder.failNoPython (G:\USST\Jason niu
tutor\FXTrafficSystem-web\node_modules\node-gyp\lib\configure.js:483:19) gyp
ERR! stack at PythonFinder.<anonymous> (G:\USST\Jason niu
tutor\FXTrafficSystem-web\node_modules\node-gyp\lib\configure.js:508:16) gyp
ERR! stack at G:\USST\Jason niu
tutor\FXTrafficSystem-web\node_modules\graceful-fs\polyfills.js:284:29 gyp ERR!
stack at FSReqWrap.oncomplete (fs.js:158:21) gyp ERR! System Windows_NT
10.0.16299 gyp ERR! command "F:\\Program Files (x86)\\node-v10.5.0\\node.exe"
"G:\\USST\\Jason niu
tutor\\FXTrafficSystem-web\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild"
"--verbose" "--libsass_ext=" "--libsass_cflags=" "--libsass_ldflags="
"--libsass_library=" gyp ERR! cwd G:\USST\Jason niu
tutor\FXTrafficSystem-web\node_modules\node-sass gyp ERR! node -v v10.5.0 gyp
ERR! node-gyp -v v3.6.2 gyp ERR! not ok Build failed with error code: 1 npm
WARN [email protected] requires a peer of [email protected]^2.0.0 || >= 3.0.0-rc.0 ||
^3.0.0 but none is installed. You must install peer dependencies yourself. npm
WARN The package express is included as both a dev and production dependency.
npm WARN The package jquery is included as both a dev and production
dependency. npm WARN optional SKIPPING OPTIONAL DEPENDENCY: [email protected]
(node_modules\fsevents): npm WARN notsup SKIPPING OPTIONAL DEPENDENCY:
Unsupported platform for [email protected]: wanted {"os":"darwin","arch":"any"}
(current: {"os":"win32","arch":"x64"}) npm ERR! code ELIFECYCLE npm ERR! errno
1 npm ERR! [email protected] postinstall: `node scripts/build.js` npm ERR! Exit
status 1 npm ERR! npm ERR! Failed at the [email protected] 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\99386\AppData\Roaming\npm-cache\_logs\2018-07-16T13_26_26_530Z-debug.log
解决方法

     
切记,因为我电脑上已经安装由python3.6了。环境要求python2的版本,具体为什么不用python3,我特么也纳闷,也不太清为什么必须是python2,python3版本就是不行,所以,还是重新安装python2吧……

两种方法搞定!
T1、npm install --global --production windows-build-tools
T2、自行下载
npm install --python=python2.7     #先下载
npm config set python python2.7   #再设置环境





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