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Fix some more ctypes issues (#2009)

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* Make {C,WIN,PY}FUNCTYPE's restype argument optional (for void returns)
 * Make WinError return WindowsError
 * Don't have Array explicitly inherit from Sized
   (since inheriting from classes with different metaclasses causes problems, 
    and it is a protocol anyways)
 * Have Array.__iter__ properly return an Iterator instead of an Iterable
This commit is contained in:
Michael J. Sullivan
2018-03-30 18:03:52 -07:00
committed by GitHub
parent 9b99161ca9
commit df55343e60
1 changed files with 11 additions and 8 deletions
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19
stdlib/2and3/ctypes/__init__.pyi
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@@ -1,8 +1,8 @@
# Stubs for ctypes
from typing import (
Any, Callable, ClassVar, Iterable, List, Mapping, Optional, Sequence, Sized, Text, Tuple, Type,
Generic, TypeVar, overload,
Any, Callable, ClassVar, Iterator, Iterable, List, Mapping, Optional, Sequence, Sized, Text,
Tuple, Type, Generic, TypeVar, overload,
)
from typing import Union as _UnionT
import sys
@@ -97,16 +97,16 @@ class _FuncPointer(_PointerLike, _CData):
class ArgumentError(Exception): ...
def CFUNCTYPE(restype: Type[_CData],
def CFUNCTYPE(restype: Optional[Type[_CData]],
*argtypes: Type[_CData],
use_errno: bool = ...,
use_last_error: bool = ...) -> Type[_FuncPointer]: ...
if sys.platform == 'win32':
def WINFUNCTYPE(restype: Type[_CData],
def WINFUNCTYPE(restype: Optional[Type[_CData]],
*argtypes: Type[_CData],
use_errno: bool = ...,
use_last_error: bool = ...) -> Type[_FuncPointer]: ...
def PYFUNCTYPE(restype: Type[_CData],
def PYFUNCTYPE(restype: Optional[Type[_CData]],
*argtypes: Type[_CData]) -> Type[_FuncPointer]: ...
class _CArgObject: ...
@@ -168,7 +168,7 @@ def sizeof(obj_or_type: _UnionT[_CData, Type[_CData]]) -> int: ...
def string_at(address: _CVoidConstPLike, size: int = ...) -> bytes: ...
if sys.platform == 'win32':
def WinError(code: Optional[int] = ...,
desc: Optional[str] = ...) -> OSError: ...
desc: Optional[str] = ...) -> WindowsError: ...
def wstring_at(address: _CVoidConstPLike, size: int = ...) -> str: ...
class _SimpleCData(Generic[_T], _CData):
@@ -245,7 +245,7 @@ class Structure(_StructUnionBase): pass
class BigEndianStructure(Structure): pass
class LittleEndianStructure(Structure): pass
class Array(Generic[_T], Sized, _CData):
class Array(Generic[_T], _CData):
_length_: ClassVar[int] = ...
_type_: ClassVar[Type[_T]] = ...
raw: bytes = ... # TODO only available with _T == c_char
@@ -271,4 +271,7 @@ class Array(Generic[_T], Sized, _CData):
def __setitem__(self, i: int, o: Any) -> None: ...
@overload
def __setitem__(self, s: slice, o: Iterable[Any]) -> None: ...
def __iter__(self) -> Iterable[Any]: ...
def __iter__(self) -> Iterator[Any]: ...
# Can't inherit from Sized because the metaclass conflict between
# Sized and _CData prevents using _CDataMeta.
def __len__(self) -> int: ...