some problems with npm install in angular js - angularjs

Question

l'm a beginner in angular js. l just start to learn it.
However l have this error when l execute npm install commande:
npm install> bufferutil#1.2.1 install C:\Users\A626262\WebstormProjects\FirstJsApp\node_modules\bufferutil
node-gyp rebuild
C:\Users\A626262\WebstormProjects\FirstJsApp\node_modules\bufferutil>if not defined npm_config_node_gyp (node "C:\Program Files\nodejs\node_modules\npm\bin\node-gyp-bin\....\node_modu
les\node-gyp\bin\node-gyp.js" rebuild ) else (node "" rebuild )
gyp ERR! configure error
gyp ERR! stack Error: Can't find Python executable "python", you can set the PYTHON env variable.
gyp ERR! stack at failNoPython (C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\configure.js:401:14)
gyp ERR! stack at C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\configure.js:356:11
gyp ERR! stack at FSReqWrap.oncomplete (fs.js:82:15)
gyp ERR! System Windows_NT 6.1.7601
gyp ERR! command "C:\Program Files\nodejs\node.exe" "C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\bin\node-gyp.js" "rebuild"
gyp ERR! cwd C:\Users\A626262\WebstormProjects\FirstJsApp\node_modules\bufferutil
gyp ERR! node -v v5.7.0
gyp ERR! node-gyp -v v3.2.1
gyp ERR! not ok
npm WARN install:bufferutil#1.2.1 bufferutil#1.2.1 install: node-gyp rebuild
npm WARN install:bufferutil#1.2.1 Exit status 1
utf-8-validate#1.2.1 install C:\Users\A626262\WebstormProjects\FirstJsApp\node_modules\utf-8-validate
node-gyp rebuild
C:\Users\A626262\WebstormProjects\FirstJsApp\node_modules\utf-8-validate>if not defined npm_config_node_gyp (node "C:\Program Files\nodejs\node_modules\npm\bin\node-gyp-bin\....\node_
modules\node-gyp\bin\node-gyp.js" rebuild ) else (node "" rebuild )
gyp ERR! configure error
gyp ERR! stack Error: Can't find Python executable "python", you can set the PYTHON env variable.
gyp ERR! stack at failNoPython (C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\configure.js:401:14)
gyp ERR! stack at C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\configure.js:356:11
gyp ERR! stack at FSReqWrap.oncomplete (fs.js:82:15)
gyp ERR! System Windows_NT 6.1.7601
gyp ERR! command "C:\Program Files\nodejs\node.exe" "C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\bin\node-gyp.js" "rebuild"
gyp ERR! cwd C:\Users\A626262\WebstormProjects\FirstJsApp\node_modules\utf-8-validate
gyp ERR! node -v v5.7.0
gyp ERR! node-gyp -v v3.2.1
gyp ERR! not ok
npm WARN install:utf-8-validate#1.2.1 utf-8-validate#1.2.1 install: node-gyp rebuild
npm WARN install:utf-8-validate#1.2.1 Exit status 1
angular-seed#0.0.0 postinstall C:\Users\A626262\WebstormProjects\FirstJsApp
bower install
bower angular#~1.4.0 ENOGIT git is not installed or not in the PATH
npm WARN optional Skipping failed optional dependency /chokidar/fsevents:
npm WARN notsup Not compatible with your operating system or architecture: fsevents#1.0.8
npm ERR! Windows_NT 6.1.7601
npm ERR! argv "C:\Program Files\nodejs\node.exe" "C:\Program Files\nodejs\node_modules\npm\bin\npm-cli.js" "install"
npm ERR! node v5.7.0
npm ERR! npm v3.6.0
npm ERR! code ELIFECYCLE
npm ERR! angular-seed#0.0.0 postinstall: bower install
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the angular-seed#0.0.0 postinstall script 'bower install'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the angular-seed package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! bower install
npm ERR! You can get information on how to open an issue for this project with:
npm ERR! npm bugs angular-seed
npm ERR! Or if that isn't available, you can get their info via:
npm ERR! npm owner ls angular-seed
npm ERR! There is likely additional logging output above.
npm ERR! Please include the following file with any support request:
npm ERR! C:\Users\A626262\WebstormProjects\FirstJsApp\npm-debug.log
npm ERR! Windows_NT 6.1.7601
npm ERR! argv "C:\Program Files\nodejs\node.exe" "C:\Program Files\nodejs\node_modules\npm\bin\npm-cli.js" "start"
npm ERR! node v5.7.0
npm ERR! npm v3.6.0
npm ERR! code ELIFECYCLE
npm ERR! angular-seed#0.0.0 prestart: npm install
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the angular-seed#0.0.0 prestart script 'npm install'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the angular-seed package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! npm install
npm ERR! You can get information on how to open an issue for this project with:
npm ERR! npm bugs angular-seed
npm ERR! Or if that isn't available, you can get their info via:
npm ERR! npm owner ls angular-seed
npm ERR! There is likely additional logging output above.
npm ERR! Please include the following file with any support request:
npm ERR! C:\Users\A626262\WebstormProjects\FirstJsApp\npm-debug.log
Thank for your help!

Answer 1

You should install git and make it available on your path since both npm and bower heavily relies on git to fetch your dependencies. Fetch the latest version of git for windows here.
The installer should take care of adding git to your PATH for you.