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58 lines
1.4 KiB
Python
58 lines
1.4 KiB
Python
"""Helpers for use with type annotation.
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Use the empty classes in this module when annotating the types of Pyrsistent
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objects, instead of using the actual collection class.
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For example,
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from pyrsistent import pvector
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from pyrsistent.typing import PVector
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myvector: PVector[str] = pvector(['a', 'b', 'c'])
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"""
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try:
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from typing import Container
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from typing import Hashable
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from typing import Generic
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from typing import Iterable
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from typing import Mapping
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from typing import Sequence
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from typing import Sized
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from typing import TypeVar
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__all__ = ['CheckedPSet', 'CheckedPVector', 'PBag', 'PDeque', 'PList', 'PMap', 'PSet', 'PVector']
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T = TypeVar('T')
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KT = TypeVar('KT')
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VT = TypeVar('VT')
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# PSet.add and PSet.discard have different type signatures than that of Set.
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class CheckedPSet(Generic[T], Hashable):
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pass
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class CheckedPVector(Sequence[T], Hashable):
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pass
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class PBag(Container[T], Iterable[T], Sized, Hashable):
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pass
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class PDeque(Sequence[T], Hashable):
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pass
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class PList(Sequence[T], Hashable):
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pass
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class PMap(Mapping[KT, VT], Hashable):
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pass
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# PSet.add and PSet.discard have different type signatures than that of Set.
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class PSet(Generic[T], Hashable):
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pass
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class PVector(Sequence[T], Hashable):
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pass
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except ImportError:
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pass
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