endpointscfg get an error google.appengine.ext

I want to create end point lib with this command

python lib/endpoints/endpointscfg.py get_client_lib java -bs src.service.mobile_api.MobileApi

but geting this error

from google.appengine.ext import vendor
ImportError: No module named appengine.ext

Solution

downlaod

 google-cloud-sdk
 https://cloud.google.com/sdk/docs/downloads-versioned-archives

it this folder in Document directory then

cd Document/google-cloud-sdk and run this command

./install.sh

after

gcloud components install app-engine-python

and update your lib directory with this command in your project like this

 cd /project/

 ls

 lib src etc 

 sudo pip install -t lib google-endpoints