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Convert selected ABCs to Protocols (#1220)

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This commit is contained in:
Ivan Levkivskyi
2017-11-19 17:52:16 +01:00
committed by Guido van Rossum
parent 7806420105
commit ec2cb8e44f
4 changed files with 82 additions and 43 deletions
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44
stdlib/2/typing.pyi
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@@ -18,6 +18,7 @@ class _SpecialForm(object):
Tuple: _SpecialForm = ...
Generic: _SpecialForm = ...
Protocol: _SpecialForm = ...
Callable: _SpecialForm = ...
Type: _SpecialForm = ...
ClassVar: _SpecialForm = ...
@@ -61,47 +62,60 @@ _V_co = TypeVar('_V_co', covariant=True) # Any type covariant containers.
_KT_co = TypeVar('_KT_co', covariant=True) # Key type covariant containers.
_VT_co = TypeVar('_VT_co', covariant=True) # Value type covariant containers.
_T_contra = TypeVar('_T_contra', contravariant=True) # Ditto contravariant.
_TC = TypeVar('_TC', bound=Type[object])
class SupportsInt(metaclass=ABCMeta):
def runtime(cls: _TC) -> _TC: ...
@runtime
class SupportsInt(Protocol, metaclass=ABCMeta):
@abstractmethod
def __int__(self) -> int: ...
class SupportsFloat(metaclass=ABCMeta):
@runtime
class SupportsFloat(Protocol, metaclass=ABCMeta):
@abstractmethod
def __float__(self) -> float: ...
class SupportsComplex(metaclass=ABCMeta):
@runtime
class SupportsComplex(Protocol, metaclass=ABCMeta):
@abstractmethod
def __complex__(self) -> complex: ...
class SupportsAbs(Generic[_T]):
@runtime
class SupportsAbs(Protocol[_T_co]):
@abstractmethod
def __abs__(self) -> _T: ...
def __abs__(self) -> _T_co: ...
class SupportsRound(Generic[_T]):
@runtime
class SupportsRound(Protocol[_T_co]):
@abstractmethod
def __round__(self, ndigits: int = ...) -> _T: ...
def __round__(self, ndigits: int = ...) -> _T_co: ...
class Reversible(Generic[_T_co]):
@runtime
class Reversible(Protocol[_T_co]):
@abstractmethod
def __reversed__(self) -> Iterator[_T_co]: ...
class Sized(metaclass=ABCMeta):
@runtime
class Sized(Protocol, metaclass=ABCMeta):
@abstractmethod
def __len__(self) -> int: ...
class Hashable(metaclass=ABCMeta):
@runtime
class Hashable(Protocol, metaclass=ABCMeta):
# TODO: This is special, in that a subclass of a hashable class may not be hashable
# (for example, list vs. object). It's not obvious how to represent this. This class
# is currently mostly useless for static checking.
@abstractmethod
def __hash__(self) -> int: ...
class Iterable(Generic[_T_co]):
@runtime
class Iterable(Protocol[_T_co]):
@abstractmethod
def __iter__(self) -> Iterator[_T_co]: ...
class Iterator(Iterable[_T_co], Generic[_T_co]):
@runtime
class Iterator(Iterable[_T_co], Protocol[_T_co]):
@abstractmethod
def next(self) -> _T_co: ...
@@ -124,7 +138,8 @@ class Generator(Iterator[_T_co], Generic[_T_co, _T_contra, _V_co]):
gi_frame = ... # type: FrameType
gi_running = ... # type: bool
class Container(Generic[_T_co]):
@runtime
class Container(Protocol[_T_co]):
@abstractmethod
def __contains__(self, x: object) -> bool: ...
@@ -209,7 +224,8 @@ class ValuesView(MappingView, Iterable[_VT_co], Generic[_VT_co]):
def __contains__(self, o: object) -> bool: ...
def __iter__(self) -> Iterator[_VT_co]: ...
class ContextManager(Generic[_T_co]):
@runtime
class ContextManager(Protocol[_T_co]):
def __enter__(self) -> _T_co: ...
def __exit__(self, exc_type: Optional[Type[BaseException]],
exc_value: Optional[BaseException],