requirements/openstack_requirements/cmds/check_py2.py
Doug Hellmann 2c43fb140b add check-python2-support command
Change-Id: I3406acd2b1fea353fd1419cbe1aacc2b09588a3c
Signed-off-by: Doug Hellmann <doug@doughellmann.com>
2017-01-24 10:34:40 -05:00

79 lines
2.6 KiB
Python
Executable File

#! /usr/bin/env 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.
from __future__ import print_function
import argparse
import pkg_resources
import requests
_url_template = 'https://pypi.python.org/pypi/{dist}/{version}/json'
def _get_metadata(dist, version):
try:
url = _url_template.format(dist=dist, version=version)
response = requests.get(url)
return response.json()
except ValueError:
return {}
def main():
parser = argparse.ArgumentParser()
parser.add_argument(
'--verbose', '-v',
default=False,
action='store_true',
help='turn on noisy output',
)
parser.add_argument(
'--requirements',
default='upper-constraints.txt',
help='the list of constrained requirements to check',
)
args = parser.parse_args()
for line in open(args.requirements, 'r'):
try:
req = pkg_resources.Requirement.parse(line)
except ValueError:
# Assume this is a comment and skip it.
continue
# req.specifier is a set so we can't get an item out of it
# directly. Turn it into a list and take the first (and only)
# value. That gives us an _IndividualSpecifier which has a
# version attribute that is not smart enough to filter out the
# selector value for things like python version, so drop
# anything after the first semicolon.
version = list(req.specifier)[0].version.split(';')[0]
data = _get_metadata(req.project_name, version)
classifiers = data.get('info', {}).get('classifiers', [])
for classifier in classifiers:
if classifier.startswith('Programming Language :: Python :: 2'):
if args.verbose:
print('{}==={} {!r}'.format(
req.project_name, version, classifier))
break
else:
print('\nNo "Python :: 2" classifier found for {}==={}'.format(
req.project_name, version))
for classifier in classifiers:
print(' {}'.format(classifier))
if __name__ == '__main__':
main()