mirror of
https://github.com/davidhalter/typeshed.git
synced 2025-12-07 20:54:28 +08:00
97d9f2eb2c
This commit reorders any overloads where the first overload was
"shadowing" the second, preventing it from ever being matched by type
checkers that work by selecting the first matching overload alternative.
For example, the first overload alternative below is strictly broader
then the second, preventing it from ever being selected:
class Parent: pass
class Child(Parent): pass
@overload
def foo(x: *int) -> Parent: ...
@overload
def foo(x: int, y: int) -> Child: ...
The correct thing to do is to either delete the second overload or
rearrange them to look like this:
@overload
def foo(x: int, y: int) -> Child: ...
@overload
def foo(x: *int) -> Parent: ...
Rationale: I'm currently [working on a proposal][0] that would amend
PEP 484 to (a) mandate type checkers check overloads in order and
(b) prohibit overloads where an earlier alternative completely shadows
a later one.
[0]: https://github.com/python/typing/issues/253#issuecomment-389262904
This would prohibit overloads that look like the example below, where
the first alternative completely shadows the second.
I figured it would be a good idea to make these changes ahead of time:
if my proposal is accepted, it'd make the transition smoother. If not,
this is hopefully a relatively harmless change.
Note: I think some of these overloads could be simplified (e.g.
`reversed(...)`), but I mostly stuck with rearranging them in case I was
wrong. The only overload I actually changed was `hmac.compare_digest` --
I believe the Python 2 version actually accepts unicode.
555 lines
18 KiB
Python
555 lines
18 KiB
Python
# Stubs for typing
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import sys
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from abc import abstractmethod, ABCMeta
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from types import CodeType, FrameType, TracebackType
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import collections # Needed by aliases like DefaultDict, see mypy issue 2986
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# Definitions of special type checking related constructs. Their definition
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# are not used, so their value does not matter.
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overload = object()
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Any = object()
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TypeVar = object()
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_promote = object()
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no_type_check = object()
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class _SpecialForm:
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def __getitem__(self, typeargs: Any) -> Any: ...
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Tuple: _SpecialForm = ...
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Generic: _SpecialForm = ...
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Protocol: _SpecialForm = ...
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Callable: _SpecialForm = ...
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Type: _SpecialForm = ...
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ClassVar: _SpecialForm = ...
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class GenericMeta(type): ...
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# Return type that indicates a function does not return.
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# This type is equivalent to the None type, but the no-op Union is necessary to
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# distinguish the None type from the None value.
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NoReturn = Union[None]
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# Type aliases and type constructors
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class TypeAlias:
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# Class for defining generic aliases for library types.
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def __init__(self, target_type: type) -> None: ...
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def __getitem__(self, typeargs: Any) -> Any: ...
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Union = TypeAlias(object)
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Optional = TypeAlias(object)
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List = TypeAlias(object)
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Dict = TypeAlias(object)
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DefaultDict = TypeAlias(object)
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Set = TypeAlias(object)
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FrozenSet = TypeAlias(object)
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Counter = TypeAlias(object)
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Deque = TypeAlias(object)
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if sys.version_info >= (3, 3):
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ChainMap = TypeAlias(object)
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# Predefined type variables.
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AnyStr = TypeVar('AnyStr', str, bytes)
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# Abstract base classes.
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# These type variables are used by the container types.
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_T = TypeVar('_T')
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_S = TypeVar('_S')
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_KT = TypeVar('_KT') # Key type.
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_VT = TypeVar('_VT') # Value type.
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_T_co = TypeVar('_T_co', covariant=True) # Any type covariant containers.
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_V_co = TypeVar('_V_co', covariant=True) # Any type covariant containers.
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_KT_co = TypeVar('_KT_co', covariant=True) # Key type covariant containers.
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_VT_co = TypeVar('_VT_co', covariant=True) # Value type covariant containers.
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_T_contra = TypeVar('_T_contra', contravariant=True) # Ditto contravariant.
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_TC = TypeVar('_TC', bound=Type[object])
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def runtime(cls: _TC) -> _TC: ...
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@runtime
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class SupportsInt(Protocol, metaclass=ABCMeta):
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@abstractmethod
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def __int__(self) -> int: ...
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@runtime
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class SupportsFloat(Protocol, metaclass=ABCMeta):
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@abstractmethod
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def __float__(self) -> float: ...
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@runtime
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class SupportsComplex(Protocol, metaclass=ABCMeta):
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@abstractmethod
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def __complex__(self) -> complex: ...
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@runtime
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class SupportsBytes(Protocol, metaclass=ABCMeta):
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@abstractmethod
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def __bytes__(self) -> bytes: ...
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@runtime
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class SupportsAbs(Protocol[_T_co]):
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@abstractmethod
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def __abs__(self) -> _T_co: ...
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@runtime
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class SupportsRound(Protocol[_T_co]):
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@abstractmethod
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def __round__(self, ndigits: int = ...) -> _T_co: ...
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@runtime
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class Reversible(Protocol[_T_co]):
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@abstractmethod
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def __reversed__(self) -> Iterator[_T_co]: ...
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@runtime
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class Sized(Protocol, metaclass=ABCMeta):
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@abstractmethod
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def __len__(self) -> int: ...
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@runtime
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class Hashable(Protocol, metaclass=ABCMeta):
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# TODO: This is special, in that a subclass of a hashable class may not be hashable
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# (for example, list vs. object). It's not obvious how to represent this. This class
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# is currently mostly useless for static checking.
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@abstractmethod
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def __hash__(self) -> int: ...
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@runtime
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class Iterable(Protocol[_T_co]):
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@abstractmethod
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def __iter__(self) -> Iterator[_T_co]: ...
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@runtime
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class Iterator(Iterable[_T_co], Protocol[_T_co]):
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@abstractmethod
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def __next__(self) -> _T_co: ...
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def __iter__(self) -> 'Iterator[_T_co]': ...
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class Generator(Iterator[_T_co], Generic[_T_co, _T_contra, _V_co]):
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@abstractmethod
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def __next__(self) -> _T_co: ...
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@abstractmethod
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def send(self, value: _T_contra) -> _T_co: ...
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@abstractmethod
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def throw(self, typ: Type[BaseException], val: Optional[BaseException] = ...,
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tb: Optional[TracebackType] = ...) -> _T_co: ...
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@abstractmethod
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def close(self) -> None: ...
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@abstractmethod
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def __iter__(self) -> 'Generator[_T_co, _T_contra, _V_co]': ...
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gi_code = ... # type: CodeType
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gi_frame = ... # type: FrameType
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gi_running = ... # type: bool
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gi_yieldfrom = ... # type: Optional[Generator]
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# TODO: Several types should only be defined if sys.python_version >= (3, 5):
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# Awaitable, AsyncIterator, AsyncIterable, Coroutine, Collection.
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# See https: //github.com/python/typeshed/issues/655 for why this is not easy.
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@runtime
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class Awaitable(Protocol[_T_co]):
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@abstractmethod
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def __await__(self) -> Generator[Any, None, _T_co]: ...
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class Coroutine(Awaitable[_V_co], Generic[_T_co, _T_contra, _V_co]):
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@abstractmethod
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def send(self, value: _T_contra) -> _T_co: ...
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@abstractmethod
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def throw(self, typ: Type[BaseException], val: Optional[BaseException] = ...,
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tb: Optional[TracebackType] = ...) -> _T_co: ...
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@abstractmethod
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def close(self) -> None: ...
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# NOTE: This type does not exist in typing.py or PEP 484.
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# The parameters corrrespond to Generator, but the 4th is the original type.
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class AwaitableGenerator(Generator[_T_co, _T_contra, _V_co], Awaitable[_V_co],
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Generic[_T_co, _T_contra, _V_co, _S]):
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pass
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@runtime
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class AsyncIterable(Protocol[_T_co]):
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@abstractmethod
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def __aiter__(self) -> 'AsyncIterator[_T_co]': ...
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@runtime
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class AsyncIterator(AsyncIterable[_T_co],
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Protocol[_T_co]):
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@abstractmethod
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def __anext__(self) -> Awaitable[_T_co]: ...
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def __aiter__(self) -> 'AsyncIterator[_T_co]': ...
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if sys.version_info >= (3, 6):
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class AsyncGenerator(AsyncIterator[_T_co], Generic[_T_co, _T_contra]):
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@abstractmethod
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def __anext__(self) -> Awaitable[_T_co]: ...
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@abstractmethod
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def asend(self, value: _T_contra) -> Awaitable[_T_co]: ...
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@abstractmethod
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def athrow(self, typ: Type[BaseException], val: Optional[BaseException] = ...,
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tb: Any = ...) -> Awaitable[_T_co]: ...
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@abstractmethod
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def aclose(self) -> Awaitable[_T_co]: ...
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@abstractmethod
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def __aiter__(self) -> 'AsyncGenerator[_T_co, _T_contra]': ...
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ag_await = ... # type: Any
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ag_code = ... # type: CodeType
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ag_frame = ... # type: FrameType
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ag_running = ... # type: bool
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@runtime
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class Container(Protocol[_T_co]):
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@abstractmethod
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def __contains__(self, x: object) -> bool: ...
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if sys.version_info >= (3, 6):
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@runtime
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class Collection(Sized, Iterable[_T_co], Container[_T_co], Protocol[_T_co]): ...
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_Collection = Collection
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else:
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@runtime
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class _Collection(Sized, Iterable[_T_co], Container[_T_co], Protocol[_T_co]): ...
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class Sequence(_Collection[_T_co], Reversible[_T_co], Generic[_T_co]):
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@overload
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@abstractmethod
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def __getitem__(self, i: int) -> _T_co: ...
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@overload
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@abstractmethod
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def __getitem__(self, s: slice) -> Sequence[_T_co]: ...
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# Mixin methods
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if sys.version_info >= (3, 5):
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def index(self, x: Any, start: int = ..., end: int = ...) -> int: ...
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else:
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def index(self, x: Any) -> int: ...
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def count(self, x: Any) -> int: ...
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def __contains__(self, x: object) -> bool: ...
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def __iter__(self) -> Iterator[_T_co]: ...
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def __reversed__(self) -> Iterator[_T_co]: ...
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class MutableSequence(Sequence[_T], Generic[_T]):
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@abstractmethod
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def insert(self, index: int, object: _T) -> None: ...
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@overload
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@abstractmethod
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def __setitem__(self, i: int, o: _T) -> None: ...
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@overload
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@abstractmethod
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def __setitem__(self, s: slice, o: Iterable[_T]) -> None: ...
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@overload
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@abstractmethod
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def __delitem__(self, i: int) -> None: ...
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@overload
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@abstractmethod
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def __delitem__(self, i: slice) -> None: ...
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# Mixin methods
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def append(self, object: _T) -> None: ...
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def clear(self) -> None: ...
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def extend(self, iterable: Iterable[_T]) -> None: ...
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def reverse(self) -> None: ...
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def pop(self, index: int = ...) -> _T: ...
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def remove(self, object: _T) -> None: ...
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def __iadd__(self, x: Iterable[_T]) -> MutableSequence[_T]: ...
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class AbstractSet(_Collection[_T_co], Generic[_T_co]):
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@abstractmethod
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def __contains__(self, x: object) -> bool: ...
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# Mixin methods
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def __le__(self, s: AbstractSet[Any]) -> bool: ...
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def __lt__(self, s: AbstractSet[Any]) -> bool: ...
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def __gt__(self, s: AbstractSet[Any]) -> bool: ...
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def __ge__(self, s: AbstractSet[Any]) -> bool: ...
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def __and__(self, s: AbstractSet[Any]) -> AbstractSet[_T_co]: ...
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def __or__(self, s: AbstractSet[_T]) -> AbstractSet[Union[_T_co, _T]]: ...
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def __sub__(self, s: AbstractSet[Any]) -> AbstractSet[_T_co]: ...
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def __xor__(self, s: AbstractSet[_T]) -> AbstractSet[Union[_T_co, _T]]: ...
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# TODO: Argument can be a more general ABC?
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def isdisjoint(self, s: AbstractSet[Any]) -> bool: ...
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class MutableSet(AbstractSet[_T], Generic[_T]):
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@abstractmethod
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def add(self, x: _T) -> None: ...
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@abstractmethod
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def discard(self, x: _T) -> None: ...
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# Mixin methods
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def clear(self) -> None: ...
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def pop(self) -> _T: ...
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def remove(self, element: _T) -> None: ...
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def __ior__(self, s: AbstractSet[_S]) -> MutableSet[Union[_T, _S]]: ...
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def __iand__(self, s: AbstractSet[Any]) -> MutableSet[_T]: ...
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def __ixor__(self, s: AbstractSet[_S]) -> MutableSet[Union[_T, _S]]: ...
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def __isub__(self, s: AbstractSet[Any]) -> MutableSet[_T]: ...
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class MappingView(Sized):
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def __len__(self) -> int: ...
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class ItemsView(AbstractSet[Tuple[_KT_co, _VT_co]], MappingView, Generic[_KT_co, _VT_co]):
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def __contains__(self, o: object) -> bool: ...
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def __iter__(self) -> Iterator[Tuple[_KT_co, _VT_co]]: ...
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class KeysView(AbstractSet[_KT_co], MappingView, Generic[_KT_co]):
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def __contains__(self, o: object) -> bool: ...
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def __iter__(self) -> Iterator[_KT_co]: ...
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class ValuesView(MappingView, Iterable[_VT_co], Generic[_VT_co]):
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def __contains__(self, o: object) -> bool: ...
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def __iter__(self) -> Iterator[_VT_co]: ...
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@runtime
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class ContextManager(Protocol[_T_co]):
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def __enter__(self) -> _T_co: ...
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def __exit__(self, exc_type: Optional[Type[BaseException]],
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exc_value: Optional[BaseException],
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traceback: Optional[TracebackType]) -> Optional[bool]: ...
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if sys.version_info >= (3, 5):
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@runtime
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class AsyncContextManager(Protocol[_T_co]):
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def __aenter__(self) -> Awaitable[_T_co]: ...
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def __aexit__(self, exc_type: Optional[Type[BaseException]],
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exc_value: Optional[BaseException],
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traceback: Optional[TracebackType]) -> Awaitable[Optional[bool]]: ...
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class Mapping(_Collection[_KT], Generic[_KT, _VT_co]):
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# TODO: We wish the key type could also be covariant, but that doesn't work,
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# see discussion in https: //github.com/python/typing/pull/273.
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@abstractmethod
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def __getitem__(self, k: _KT) -> _VT_co:
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...
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# Mixin methods
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@overload
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def get(self, k: _KT) -> Optional[_VT_co]: ...
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@overload
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def get(self, k: _KT, default: Union[_VT_co, _T]) -> Union[_VT_co, _T]: ...
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def items(self) -> AbstractSet[Tuple[_KT, _VT_co]]: ...
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def keys(self) -> AbstractSet[_KT]: ...
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def values(self) -> ValuesView[_VT_co]: ...
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def __contains__(self, o: object) -> bool: ...
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class MutableMapping(Mapping[_KT, _VT], Generic[_KT, _VT]):
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@abstractmethod
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def __setitem__(self, k: _KT, v: _VT) -> None: ...
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@abstractmethod
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def __delitem__(self, v: _KT) -> None: ...
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def clear(self) -> None: ...
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@overload
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def pop(self, k: _KT) -> _VT: ...
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@overload
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def pop(self, k: _KT, default: Union[_VT, _T] = ...) -> Union[_VT, _T]: ...
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def popitem(self) -> Tuple[_KT, _VT]: ...
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def setdefault(self, k: _KT, default: _VT = ...) -> _VT: ...
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# 'update' used to take a Union, but using overloading is better.
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# The second overloaded type here is a bit too general, because
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# Mapping[Tuple[_KT, _VT], W] is a subclass of Iterable[Tuple[_KT, _VT]],
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# but will always have the behavior of the first overloaded type
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# at runtime, leading to keys of a mix of types _KT and Tuple[_KT, _VT].
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# We don't currently have any way of forcing all Mappings to use
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# the first overload, but by using overloading rather than a Union,
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# mypy will commit to using the first overload when the argument is
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# known to be a Mapping with unknown type parameters, which is closer
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# to the behavior we want. See mypy issue #1430.
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@overload
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def update(self, __m: Mapping[_KT, _VT], **kwargs: _VT) -> None: ...
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@overload
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def update(self, __m: Iterable[Tuple[_KT, _VT]], **kwargs: _VT) -> None: ...
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@overload
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def update(self, **kwargs: _VT) -> None: ...
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Text = str
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TYPE_CHECKING = True
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class IO(Iterator[AnyStr], Generic[AnyStr]):
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# TODO detach
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# TODO use abstract properties
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@property
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def mode(self) -> str: ...
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@property
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def name(self) -> str: ...
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@abstractmethod
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def close(self) -> None: ...
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@property
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def closed(self) -> bool: ...
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@abstractmethod
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def fileno(self) -> int: ...
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@abstractmethod
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def flush(self) -> None: ...
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@abstractmethod
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def isatty(self) -> bool: ...
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# TODO what if n is None?
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@abstractmethod
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def read(self, n: int = ...) -> AnyStr: ...
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@abstractmethod
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def readable(self) -> bool: ...
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@abstractmethod
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def readline(self, limit: int = ...) -> AnyStr: ...
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@abstractmethod
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def readlines(self, hint: int = ...) -> list[AnyStr]: ...
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@abstractmethod
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def seek(self, offset: int, whence: int = ...) -> int: ...
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@abstractmethod
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def seekable(self) -> bool: ...
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@abstractmethod
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def tell(self) -> int: ...
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@abstractmethod
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def truncate(self, size: Optional[int] = ...) -> int: ...
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@abstractmethod
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def writable(self) -> bool: ...
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# TODO buffer objects
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@abstractmethod
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def write(self, s: AnyStr) -> int: ...
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@abstractmethod
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def writelines(self, lines: Iterable[AnyStr]) -> None: ...
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@abstractmethod
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def __next__(self) -> AnyStr: ...
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@abstractmethod
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def __iter__(self) -> Iterator[AnyStr]: ...
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@abstractmethod
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def __enter__(self) -> 'IO[AnyStr]': ...
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@abstractmethod
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def __exit__(self, t: Optional[Type[BaseException]], value: Optional[BaseException],
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traceback: Optional[TracebackType]) -> bool: ...
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class BinaryIO(IO[bytes]):
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# TODO readinto
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# TODO read1?
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# TODO peek?
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@overload
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@abstractmethod
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def write(self, s: bytearray) -> int: ...
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@overload
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@abstractmethod
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def write(self, s: bytes) -> int: ...
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@abstractmethod
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def __enter__(self) -> BinaryIO: ...
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class TextIO(IO[str]):
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# TODO use abstractproperty
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@property
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def buffer(self) -> BinaryIO: ...
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@property
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def encoding(self) -> str: ...
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@property
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def errors(self) -> Optional[str]: ...
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@property
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def line_buffering(self) -> int: ... # int on PyPy, bool on CPython
|
|
@property
|
|
def newlines(self) -> Any: ... # None, str or tuple
|
|
@abstractmethod
|
|
def __enter__(self) -> TextIO: ...
|
|
|
|
class ByteString(Sequence[int]): ...
|
|
|
|
class Match(Generic[AnyStr]):
|
|
pos = 0
|
|
endpos = 0
|
|
lastindex = 0
|
|
lastgroup = ... # type: AnyStr
|
|
string = ... # type: AnyStr
|
|
|
|
# The regular expression object whose match() or search() method produced
|
|
# this match instance.
|
|
re = ... # type: 'Pattern[AnyStr]'
|
|
|
|
def expand(self, template: AnyStr) -> AnyStr: ...
|
|
|
|
@overload
|
|
def group(self, group1: int = ...) -> AnyStr: ...
|
|
@overload
|
|
def group(self, group1: str) -> AnyStr: ...
|
|
@overload
|
|
def group(self, group1: int, group2: int,
|
|
*groups: int) -> Sequence[AnyStr]: ...
|
|
@overload
|
|
def group(self, group1: str, group2: str,
|
|
*groups: str) -> Sequence[AnyStr]: ...
|
|
|
|
def groups(self, default: AnyStr = ...) -> Sequence[AnyStr]: ...
|
|
def groupdict(self, default: AnyStr = ...) -> dict[str, AnyStr]: ...
|
|
def start(self, group: Union[int, str] = ...) -> int: ...
|
|
def end(self, group: Union[int, str] = ...) -> int: ...
|
|
def span(self, group: Union[int, str] = ...) -> Tuple[int, int]: ...
|
|
if sys.version_info >= (3, 6):
|
|
def __getitem__(self, g: Union[int, str]) -> AnyStr: ...
|
|
|
|
class Pattern(Generic[AnyStr]):
|
|
flags = 0
|
|
groupindex = ... # type: Mapping[str, int]
|
|
groups = 0
|
|
pattern = ... # type: AnyStr
|
|
|
|
def search(self, string: AnyStr, pos: int = ...,
|
|
endpos: int = ...) -> Optional[Match[AnyStr]]: ...
|
|
def match(self, string: AnyStr, pos: int = ...,
|
|
endpos: int = ...) -> Optional[Match[AnyStr]]: ...
|
|
# New in Python 3.4
|
|
def fullmatch(self, string: AnyStr, pos: int = ...,
|
|
endpos: int = ...) -> Optional[Match[AnyStr]]: ...
|
|
def split(self, string: AnyStr, maxsplit: int = ...) -> list[AnyStr]: ...
|
|
def findall(self, string: AnyStr, pos: int = ...,
|
|
endpos: int = ...) -> list[Any]: ...
|
|
def finditer(self, string: AnyStr, pos: int = ...,
|
|
endpos: int = ...) -> Iterator[Match[AnyStr]]: ...
|
|
|
|
@overload
|
|
def sub(self, repl: AnyStr, string: AnyStr,
|
|
count: int = ...) -> AnyStr: ...
|
|
@overload
|
|
def sub(self, repl: Callable[[Match[AnyStr]], AnyStr], string: AnyStr,
|
|
count: int = ...) -> AnyStr: ...
|
|
|
|
@overload
|
|
def subn(self, repl: AnyStr, string: AnyStr,
|
|
count: int = ...) -> Tuple[AnyStr, int]: ...
|
|
@overload
|
|
def subn(self, repl: Callable[[Match[AnyStr]], AnyStr], string: AnyStr,
|
|
count: int = ...) -> Tuple[AnyStr, int]: ...
|
|
|
|
# Functions
|
|
|
|
def get_type_hints(obj: Callable, globalns: Optional[dict[str, Any]] = ...,
|
|
localns: Optional[dict[str, Any]] = ...) -> dict[str, Any]: ...
|
|
|
|
def cast(tp: Type[_T], obj: Any) -> _T: ...
|
|
|
|
# Type constructors
|
|
|
|
# NamedTuple is special-cased in the type checker
|
|
class NamedTuple(tuple):
|
|
_field_types = ... # type: collections.OrderedDict[str, Type[Any]]
|
|
_fields = ... # type: Tuple[str, ...]
|
|
_source = ... # type: str
|
|
|
|
def __init__(self, typename: str, fields: Iterable[Tuple[str, Any]] = ..., *,
|
|
verbose: bool = ..., rename: bool = ..., **kwargs: Any) -> None: ...
|
|
|
|
@classmethod
|
|
def _make(cls: Type[_T], iterable: Iterable[Any]) -> _T: ...
|
|
|
|
if sys.version_info >= (3, 1):
|
|
def _asdict(self) -> collections.OrderedDict[str, Any]: ...
|
|
else:
|
|
def _asdict(self) -> Dict[str, Any]: ...
|
|
def _replace(self: _T, **kwargs: Any) -> _T: ...
|
|
|
|
def NewType(name: str, tp: Type[_T]) -> Type[_T]: ...
|