46 lines
1.5 KiB
Python
46 lines
1.5 KiB
Python
# Copyright 2014 IBM Corp.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# It's based on oslo.i18n usage in OpenStack Keystone project and
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# recommendations from
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# https://docs.openstack.org/oslo.i18n/latest/user/usage.html
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import six
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import oslo_i18n as i18n
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from oslo_utils import encodeutils
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_translators = i18n.TranslatorFactory(domain='heat')
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# The primary translation function using the well-known name "_"
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_ = _translators.primary
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def repr_wrapper(klass):
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"""A decorator that defines __repr__ method under Python 2.
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Under Python 2 it will encode repr return value to str type.
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Under Python 3 it does nothing.
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"""
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if six.PY2:
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if '__repr__' not in klass.__dict__:
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raise ValueError("@repr_wrapper cannot be applied "
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"to %s because it doesn't define __repr__()." %
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klass.__name__)
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klass._repr = klass.__repr__
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klass.__repr__ = lambda self: encodeutils.safe_encode(self._repr())
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return klass
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