具体的报错如下所示：
gyp verb ensuring that file exists: C:\Python27\python.exe
gyp ERR! configure error
gyp ERR! stack Error: Can't find Python executable "python2.7", you can set the PYTHON env variable.
gyp ERR! stack at PythonFinder.failNoPython (E:\phpstudy\PHPTutorial\WWW\ft\node_modules\node-gyp\lib\configure.js:484:19)
gyp ERR! stack at PythonFinder.<anonymous> (E:\phpstudy\PHPTutorial\WWW\ft\node_modules\node-gyp\lib\configure.js:509:16)
gyp ERR! stack at E:\phpstudy\PHPTutorial\WWW\ft\node_modules\graceful-fs\polyfills.js:282:31
gyp ERR! stack at FSReqCallback.oncomplete (fs.js:158:21)
gyp ERR! System Windows_NT 10.0.17763
gyp ERR! command "C:\Program Files\nodejs\node.exe" "E:\phpstudy\PHPTutorial\WWW\ft\node_modules\node-gyp\bin\node-gyp.js" "rebuild" "--verbose" "--libsass_ext=" "--libsass_cflags=" "--libsass_ldflags=" "--libsass_library="
gyp ERR! cwd E:\phpstudy\PHPTutorial\WWW\ft\node_modules\node-sass
gyp ERR! node -v v12.13.0
gyp ERR! node-gyp -v v3.8.0
gyp ERR! not ok
Build failed with error code: 1
npm WARN The package vue-router is included as both a dev and production dependency.
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: gyp verb ensuring that file exi
