Add multiprocessing.Array (#3272)

stdlib/3/multiprocessing/__init__.pyi

@@ -2,7 +2,7 @@
 
 from typing import (
     Any, Callable, ContextManager, Iterable, Mapping, Optional, Dict, List,
-    Union, Sequence, Tuple, Type
+    Union, Sequence, Tuple, Type, overload
 )
 
 from ctypes import _CData
@@ -67,10 +67,30 @@ class Process():
     def is_alive(self) -> bool: ...
     def join(self, timeout: Optional[float] = ...) -> None: ...
 
+class Array():
+    value: Any = ...
+
+    def __init__(self, typecode_or_type: Union[str, Type[_CData]], size_or_initializer: Union[int, Sequence[Any]], *, lock: Union[bool, _LockLike] = ...) -> None: ...
+    def acquire(self) -> bool: ...
+    def release(self) -> bool: ...
+    def get_lock(self) -> _LockLike: ...
+    def get_obj(self) -> Any: ...
+
+    @overload
+    def __getitem__(self, key: int) -> Any: ...
+    @overload
+    def __getitem__(self, key: slice) -> List[Any]: ...
+    def __getslice__(self, start: int, stop: int) -> Any: ...
+    def __setitem__(self, key: int, value: Any) -> None: ...
+
+
 class Value():
     value: Any = ...
     def __init__(self, typecode_or_type: Union[str, Type[_CData]], *args: Any, lock: Union[bool, _LockLike] = ...) -> None: ...
     def get_lock(self) -> _LockLike: ...
+    def get_obj(self) -> Any: ...
+    def acquire(self) -> bool: ...
+    def release(self) -> bool: ...
 
 # ----- multiprocessing function stubs -----
 def active_children() -> List[Process]: ...