36 lines
1.3 KiB
Python
36 lines
1.3 KiB
Python
# Copyright 2016 Google LLC. All Rights Reserved.
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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 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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"""ValueMixin provides comparison and string methods based on fields."""
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from __future__ import unicode_literals
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class ValueMixin(object):
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"""Provides simplistic but often sufficient comparison and string methods."""
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def __eq__(self, other):
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return getattr(other, '__dict__', None) == self.__dict__
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def __ne__(self, other):
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return not self == other
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def __hash__(self):
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return hash(frozenset(list(self.__dict__.items())))
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def __repr__(self):
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"""Returns a string representation like `MyClass(foo=23, bar=skidoo)`."""
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d = self.__dict__
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attrs = ['{}={}'.format(key, d[key]) for key in sorted(d)]
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return '{}({})'.format(self.__class__.__name__, ', '.join(attrs))
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