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40 lines
1.0 KiB
Python
40 lines
1.0 KiB
Python
5 years ago
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import abc
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from collections.abc import Mapping, MutableMapping
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class _TypingMeta(abc.ABCMeta):
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# A fake metaclass to satisfy typing deps in runtime
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# basically MultiMapping[str] and other generic-like type instantiations
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# are emulated.
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# Note: real type hints are provided by __init__.pyi stub file
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def __getitem__(self, key):
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return self
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class MultiMapping(Mapping, metaclass=_TypingMeta):
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@abc.abstractmethod
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def getall(self, key, default=None):
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raise KeyError
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@abc.abstractmethod
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def getone(self, key, default=None):
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raise KeyError
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class MutableMultiMapping(MultiMapping, MutableMapping):
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@abc.abstractmethod
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def add(self, key, value):
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raise NotImplementedError
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@abc.abstractmethod
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def extend(self, *args, **kwargs):
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raise NotImplementedError
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@abc.abstractmethod
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def popone(self, key, default=None):
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raise KeyError
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@abc.abstractmethod
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def popall(self, key, default=None):
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raise KeyError
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