[root@controller ~]# cat flavor.py

 from novaclient import client as nvclient

 from novaclient import utils

 from novaclient import base

 from keystoneauth1.identity import v3

 from keystoneauth1 import session

 from keystoneclient.v3 import client

 import time

 import sys

 import keystoneclient.v3.client as ksclient

 from neutronclient.v2_0 import client as netclient

 # Keystone get project_id

 auth = v3.Password(user_domain_name='Default',

                    username='admin',

                    password='openstack',

                    project_domain_name='Default',

                    project_name='admin',

                    auth_url='http://controller:35357/v3')

 sess = session.Session(auth=auth)

 keystone = client.Client(session=sess)

 projects_list = keystone.projects.list()

 for o in projects_list:

     name = getattr(o, "name", '')

     if name == "admin":

         project_id = getattr(o, "id", '')

         break

 # Nova

 nova = nvclient.Client('2.42', 'admin', 'openstack', project_id, 'http://controller:5000/v2.0')

 def flavors_list():

     flavors_list = nova.flavors.list()

     print "================ list flavor =============="

     for data in flavors_list:

         print "ID  :" + data.id

         print "Name:" + data.name

         print "CPU :" + str(data.vcpus)

         print "MEM :" + str(data.ram)

         print "Disk:" + str(data.disk)

         print "==========================================="

     print ""

 def flavors_create(name, ram, vcpus, disk):

     print "=============== create flavor ============="

     flavors_create = nova.flavors.create(name, ram, vcpus, disk, flavorid="auto",

                                          ephemeral=0, swap=0, rxtx_factor=1.0, is_public=True)

     print flavors_create

     print "===================  end  ================="

     print ""

 def set_key_flavor(name):

     print "============== set key flavor ============="

     key = {'hw:cpu_cores':'', 'hw:cpu_sockets':''}

     flavors_list = nova.flavors.list()

     for data in flavors_list:

         if data.name == name:

             print data

             data.set_keys(key)

     print "===================  end  ================="

     print ""

 def flavors_delete(name):

     print "=============== delete flavor ============="

     flavors_list = nova.flavors.list()

     for data in flavors_list:

         if data.name == name:

             print data

             nova.flavors.delete(data)

     print "===================  end  ================="

 flavors_list()

 flavors_create(name='flavor_demo', ram=4096, vcpus='', disk=0)

 set_key_flavor(name='flavor_demo')

 flavors_list()

 flavors_delete(name='flavor_demo')