46 lines
1.6 KiB
Python
46 lines
1.6 KiB
Python
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# Copyright (c) 2015-2017 Vector 35 LLC
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to
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# deal in the Software without restriction, including without limitation the
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# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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# sell copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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# IN THE SOFTWARE.
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import copy
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class _AssociatedDataStore(dict):
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_defaults = {}
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@classmethod
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def set_default(cls, name, value):
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cls._defaults[name] = value
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def __getattr__(self, name):
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if name in self.__dict__:
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return self.__dict__[name]
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if name not in self:
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if name in self.__class__._defaults:
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result = copy.copy(self.__class__._defaults[name])
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self[name] = result
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return result
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return self.__getitem__(name)
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def __setattr__(self, name, value):
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self.__setitem__(name, value)
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def __delattr__(self, name):
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self.__delitem__(name)
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