报错 gyp verb `which` failed python2 Error: not found: python2

error E:\work\mbd-dp-dev\node_modules\node-sass: Command failed.
Exit code: 1
Command: node scripts/build.js
Arguments:
Directory: E:\work\mbd-dp-dev\node_modules\node-sass
Output:
Building: D:\Soft\code\ENV\node\node.exe E:\work\mbd-dp-dev\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 [
gyp verb cli   'D:\\Soft\\code\\ENV\\node\\node.exe',
gyp verb cli   'E:\\work\\mbd-dp-dev\\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 verb cli ]
gyp info using node-gyp@3.8.0
gyp info using node@14.4.0 | win32 | x64
gyp verb command rebuild []
gyp verb command clean []
gyp verb clean removing "build" directory
gyp verb command configure []
gyp verb download using dist-url https://npm.taobao.org/dist
gyp verb check python checking for Python executable "python2.7" in the PATH
gyp verb `which` failed Error: not found: python2.7
gyp verb `which` failed     at getNotFoundError (E:\work\mbd-dp-dev\node_modules\which\which.js:13:12)
gyp verb `which` failed     at F (E:\work\mbd-dp-dev\node_modules\which\which.js:68:19)
gyp verb `which` failed     at E (E:\work\mbd-dp-dev\node_modules\which\which.js:80:29)
gyp verb `which` failed     at E:\work\mbd-dp-dev\node_modules\which\which.js:89:16
gyp verb `which` failed     at E:\work\mbd-dp-dev\node_modules\isexe\index.js:42:5
gyp verb `which` failed     at E:\work\mbd-dp-dev\node_modules\isexe\windows.js:36:5
gyp verb `which` failed     at FSReqCallback.oncomplete (fs.js:175:21)
gyp verb `which` failed  python2.7 Error: not found: python2.7
gyp verb `which` failed     at getNotFoundError (E:\work\mbd-dp-dev\node_modules\which\which.js:13:12)
gyp verb `which` failed     at F (E:\work\mbd-dp-dev\node_modules\which\which.js:68:19)
gyp verb `which` failed     at E (E:\work\mbd-dp-dev\node_modules\which\which.js:80:29)
gyp verb `which` failed     at E:\work\mbd-dp-dev\node_modules\which\which.js:89:16
gyp verb `which` failed     at E:\work\mbd-dp-dev\node_modules\isexe\index.js:42:5
gyp verb `which` failed     at E:\work\mbd-dp-dev\node_modules\isexe\windows.js:36:5
gyp verb `which` failed     at FSReqCallback.oncomplete (fs.js:175:21) {
gyp verb `which` failed   code: 'ENOENT'
gyp verb `which` failed }
gyp verb could not find "python2.7". checking python launcher
gyp verb could not find "python2.7". 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 "python2.7", you can set the PYTHON env variable.
gyp ERR! stack     at PythonFinder.failNoPython (E:\work\mbd-dp-dev\node_modules\node-gyp\lib\configure.js:484:19)
gyp ERR! stack     at PythonFinder.<anonymous> (E:\work\mbd-dp-dev\node_modules\node-gyp\lib\configure.js:509:16)
gyp ERR! stack     at callback (E:\work\mbd-dp-dev\node_modules\graceful-fs\polyfills.js:295:20)
gyp ERR! stack     at FSReqCallback.oncomplete (fs.js:175:21)
gyp ERR! System Windows_NT 10.0.18363
gyp ERR! command "D:\\Soft\\code\\ENV\\node\\node.exe" "E:\\work\\mbd-dp-dev\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild" "--verbose" "--libsass_ext=" "--libsass_cflags="
 "--libsass_ldflags=" "--libsass_library="
gyp ERR! cwd E:\work\mbd-dp-dev\node_modules\node-sass
gyp ERR! node -v v14.4.0

解决：
1、安装python2.7.16（https://www.python.org/downloads/windows/）
2、yarn add node-sass
3、yarn install