from keystoneauth1.identity import v3
from keystoneauth1 import session
from keystoneclient.v3 import client
auth_url="http://controller:5000/v3"
username="admin"
password="ccb9af74bc630a1d0621"
project_name="admin"
user_domain_id="default"
project_domain_id="default"



auth = v3.Password(
               auth_url=auth_url,
               username=username,
               password=password,
               project_name=project_name,
               user_domain_id=user_domain_id,
               project_domain_id=project_domain_id)
sess = session.Session(auth=auth)
keystone = client.Client(session=sess)
token = keystone.get_raw_token_from_identity_service(
               auth_url=auth_url,
               username=username,
               password=password,
               project_name=project_name,
               user_domain_id=user_domain_id,
               project_domain_id=project_domain_id)['auth_token']