old_contents: #    Licensed under the Apache License, Version 2.0 (the "License"); you may
  #    not use this file except in compliance with the License. You may obtain
  #    a copy of the License at
  #
  #         http://www.apache.org/licenses/LICENSE-2.0
  #
  #    Unless required by applicable law or agreed to in writing, software
  #    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  #    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  #    License for the specific language governing permissions and limitations
  #    under the License.
  
  from oslo_policy import policy
  
  COMPUTE_API = 'os_compute_api'
  
  RULE_ADMIN_OR_OWNER = 'rule:admin_or_owner'
  RULE_ADMIN_API = 'rule:admin_api'
  RULE_ANY = '@'
  
  # NOTE(johngarbutt) The base rules here affect so many APIs the list
  # of related API operations has not been populated. It would be
  # crazy hard to manually maintain such a list.
  rules = [
      policy.RuleDefault(
          "context_is_admin",
          "role:admin",
          "Decides what is required for the 'is_admin:True' check to succeed."),
      policy.RuleDefault(
          "admin_or_owner",
          "is_admin:True or project_id:%(project_id)s",
          "Default rule for most non-Admin APIs."),
      policy.RuleDefault(
          "admin_api",
          "is_admin:True",
          "Default rule for most Admin APIs.")
  ]
  
  
  def list_rules():
      return rules
  
new_contents: #    Licensed under the Apache License, Version 2.0 (the "License"); you may
  #    not use this file except in compliance with the License. You may obtain
  #    a copy of the License at
  #
  #         http://www.apache.org/licenses/LICENSE-2.0
  #
  #    Unless required by applicable law or agreed to in writing, software
  #    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  #    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  #    License for the specific language governing permissions and limitations
  #    under the License.
  
  from oslo_policy import policy
  
  RULE_ADMIN_OR_OWNER = 'rule:admin_or_owner'
  RULE_ADMIN_API = 'rule:admin_api'
  RULE_ANY = '@'
  
  # NOTE(johngarbutt) The base rules here affect so many APIs the list
  # of related API operations has not been populated. It would be
  # crazy hard to manually maintain such a list.
  rules = [
      policy.RuleDefault(
          "context_is_admin",
          "role:admin",
          "Decides what is required for the 'is_admin:True' check to succeed."),
      policy.RuleDefault(
          "admin_or_owner",
          "is_admin:True or project_id:%(project_id)s",
          "Default rule for most non-Admin APIs."),
      policy.RuleDefault(
          "admin_api",
          "is_admin:True",
          "Default rule for most Admin APIs.")
  ]
  
  
  def list_rules():
      return rules
  
subject: remove unused var from policies.base.py