old_contents: from plstackapi.openstack.client import OpenStackClient
  from plstackapi.openstack.driver import OpenStackDriver
  from plstackapi.planetstack.models import * 
  
  
  def auth_check(auth):
      client = OpenStackShell(username=auth['Username'],
                              password=auth['AuthMethod',
                              tenant=auth['LoginBase'])
      client.authenticate()
      return client
  
  
  def add_role(auth, name):
      client = auth_check(auth)
      keystone_role = client.keystone.roles.create(name)
      role = Role(role_type=name, role_id=keystone_role.id)
      role.save()
      return role
  
  def delete_role(auth, name):
      client = auth_check(auth)
      role = Role.objects.filter(role_type=name)
      client.keystone.roles.delete(role.role_id)
      role.delete()
      return 1
  
  def get_roles(auth, filter):
      client = auth_check(auth)
      roles = Role.objects.filter(**filter)
      return roles             
          
  
      
  
new_contents: from plstackapi.openstack.client import OpenStackClient
  from plstackapi.openstack.driver import OpenStackDriver
  from plstackapi.planetstack.models import * 
  
  
  def auth_check(auth):
      client = OpenStackShell(username=auth['Username'],
                              password=auth['AuthMethod]',
                              tenant=auth['LoginBase'])
      client.authenticate()
      return client
  
  
  def add_role(auth, name):
      client = auth_check(auth)
      keystone_role = client.keystone.roles.create(name)
      role = Role(role_type=name, role_id=keystone_role.id)
      role.save()
      return role
  
  def delete_role(auth, name):
      client = auth_check(auth)
      role = Role.objects.filter(role_type=name)
      client.keystone.roles.delete(role.role_id)
      role.delete()
      return 1
  
  def get_roles(auth, filter):
      client = auth_check(auth)
      roles = Role.objects.filter(**filter)
      return roles             
          
  
      
  
subject: fix syntax error