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Filename : checks.py
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# 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.

"""keystoneauth1's pep8 extensions.

In order to make the review process faster and easier for core devs we are
adding some keystoneauth1 specific pep8 checks. This will catch common
errors so that core devs don't have to.

"""

import re

from hacking import core


@core.flake8ext
def check_oslo_namespace_imports(logical_line, blank_before, filename):
    oslo_namespace_imports = re.compile(
        r"(((from)|(import))\s+oslo\.)|(from\s+oslo\s+import\s+)"
    )

    if re.match(oslo_namespace_imports, logical_line):
        msg = ("K333: '{}' must be used instead of '{}'.").format(
            logical_line.replace('oslo.', 'oslo_'), logical_line
        )
        yield (0, msg)