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WIP: Mapping.{get,pop} can return default type (#223)

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* Mapping.{get,pop} can return default type

* Mapping values are covariant
This commit is contained in:
Valérian Rousset
2016-05-30 19:05:44 +02:00
committed by Guido van Rossum
parent 5b5f01f33c
commit d43adbe97e
4 changed files with 44 additions and 20 deletions
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12
stdlib/3/builtins.pyi
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@@ -4,7 +4,7 @@ from typing import (
TypeVar, Iterator, Iterable, overload,
Sequence, MutableSequence, Mapping, MutableMapping, Tuple, List, Any, Dict, Callable, Generic,
Set, AbstractSet, MutableSet, Sized, Reversible, SupportsInt, SupportsFloat, SupportsBytes,
SupportsAbs, SupportsRound, IO, Union, ItemsView, KeysView, ValuesView, ByteString
SupportsAbs, SupportsRound, IO, Union, ItemsView, KeysView, ValuesView, ByteString, Optional,
)
from abc import abstractmethod, ABCMeta
@@ -507,8 +507,14 @@ class dict(MutableMapping[_KT, _VT], Generic[_KT, _VT]):
def __init__(self, iterable: Iterable[Tuple[_KT, _VT]], **kwargs: _VT) -> None: ...
def clear(self) -> None: ...
def copy(self) -> Dict[_KT, _VT]: ...
def get(self, k: _KT, default: _VT = None) -> _VT: ...
def pop(self, k: _KT, default: _VT = None) -> _VT: ...
@overload
def get(self, k: _KT) -> Optional[_VT]: ...
@overload
def get(self, k: _KT, default: _T) -> Union[_VT, _T]: ...
@overload
def pop(self, k: _KT) -> _VT: ...
@overload
def pop(self, k: _KT, default: _T) -> Union[_VT, _T]: ...
def popitem(self) -> Tuple[_KT, _VT]: ...
def setdefault(self, k: _KT, default: _VT = None) -> _VT: ...
@overload