horizon/tools/policy-diff.py
Hervé Beraud 17d8ab6103 Stop to use the __future__ module.
The __future__ module [1] was used in this context to ensure compatibility
between python 2 and python 3.

We previously dropped the support of python 2.7 [2] and now we only support
python 3 so we don't need to continue to use this module and the imports
listed below.

Imports commonly used and their related PEPs:
- `division` is related to PEP 238 [3]
- `print_function` is related to PEP 3105 [4]
- `unicode_literals` is related to PEP 3112 [5]
- `with_statement` is related to PEP 343 [6]
- `absolute_import` is related to PEP 328 [7]

[1] https://docs.python.org/3/library/__future__.html
[2] https://governance.openstack.org/tc/goals/selected/ussuri/drop-py27.html
[3] https://www.python.org/dev/peps/pep-0238
[4] https://www.python.org/dev/peps/pep-3105
[5] https://www.python.org/dev/peps/pep-3112
[6] https://www.python.org/dev/peps/pep-0343
[7] https://www.python.org/dev/peps/pep-0328

Change-Id: Ic03754dcaaa4f1c0018294aa52bb05d956aa5d10
2020-06-03 10:45:18 +02:00

52 lines
1.6 KiB
Python

# 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.
"""Tool to check policy file differeneces."""
import argparse
import yaml
def main():
parser = argparse.ArgumentParser()
parser.add_argument('--old', required=True,
help='Current policy file')
parser.add_argument('--new', required=True,
help='New policy file')
parser.add_argument('--mode',
choices=['add', 'remove'],
default='remove',
help='Diffs to be shown')
parsed_args = parser.parse_args()
with open(parsed_args.old) as f:
old_data = yaml.safe_load(f)
with open(parsed_args.new) as f:
new_data = yaml.safe_load(f)
added = set(new_data.keys()) - set(old_data.keys())
removed = set(old_data.keys()) - set(new_data.keys())
if parsed_args.mode == 'remove':
for key in sorted(removed):
print(key)
if parsed_args.mode == 'add':
for key in sorted(added):
print(key)
if __name__ == '__main__':
main()