[multiprocessing] fixes more incorrect types (#4289)

stdlib/3/multiprocessing/__init__.pyi

@@ -1,7 +1,7 @@
 import sys
 from ctypes import _CData
 from logging import Logger
-from multiprocessing import connection, pool, sharedctypes, spawn, synchronize
+from multiprocessing import connection, pool, sharedctypes, spawn, synchronize, queues
 from multiprocessing.context import (
     AuthenticationError as AuthenticationError,
     BaseContext,
@@ -14,8 +14,7 @@ from multiprocessing.context import (
 )
 from multiprocessing.managers import SyncManager
 from multiprocessing.process import active_children as active_children, current_process as current_process
-from multiprocessing.queues import JoinableQueue as JoinableQueue, Queue as Queue, SimpleQueue as SimpleQueue
-from multiprocessing.spawn import freeze_support as freeze_support, set_executable as set_executable
+from multiprocessing.spawn import freeze_support as freeze_support
 from typing import Any, Callable, Iterable, List, Optional, Sequence, Tuple, Type, Union, overload
 
 from typing_extensions import Literal
@@ -36,9 +35,11 @@ _LockLike = Union[synchronize.Lock, synchronize.RLock]
 def Barrier(parties: int, action: Optional[Callable[..., Any]] = ..., timeout: Optional[float] = ...) -> synchronize.Barrier: ...
 def BoundedSemaphore(value: int = ...) -> synchronize.BoundedSemaphore: ...
 def Condition(lock: Optional[_LockLike] = ...) -> synchronize.Condition: ...
-def Event(lock: Optional[_LockLike] = ...) -> synchronize.Event: ...
+def Event() -> synchronize.Event: ...
+def JoinableQueue(maxsize: int = ...) -> queues.JoinableQueue: ...
 def Lock() -> synchronize.Lock: ...
 def RLock() -> synchronize.RLock: ...
+def SimpleQueue() -> queues.SimpleQueue: ...
 def Semaphore(value: int = ...) -> synchronize.Semaphore: ...
 def Pipe(duplex: bool = ...) -> Tuple[connection.Connection, connection.Connection]: ...
 def Pool(
@@ -47,6 +48,7 @@ def Pool(
     initargs: Iterable[Any] = ...,
     maxtasksperchild: Optional[int] = ...,
 ) -> pool.Pool: ...
+def Queue(maxsize: int = ...) -> queues.Queue: ...
 
 # Functions Array and Value are copied from context.pyi.
 # See https://github.com/python/typeshed/blob/ac234f25927634e06d9c96df98d72d54dd80dfc4/stdlib/2and3/turtle.pyi#L284-L291
@@ -60,6 +62,7 @@ def cpu_count() -> int: ...
 def get_logger() -> Logger: ...
 def log_to_stderr(level: Optional[Union[str, int]] = ...) -> Logger: ...
 def Manager() -> SyncManager: ...
+def set_executable(executable: str) -> None: ...
 def set_forkserver_preload(module_names: List[str]) -> None: ...
 def get_all_start_methods() -> List[str]: ...
 def get_start_method(allow_none: bool = ...) -> Optional[str]: ...

stdlib/3/multiprocessing/context.pyi

@@ -40,7 +40,7 @@ class BaseContext(object):
     ) -> synchronize.Barrier: ...
     def BoundedSemaphore(self, value: int = ...) -> synchronize.BoundedSemaphore: ...
     def Condition(self, lock: Optional[_LockLike] = ...) -> synchronize.Condition: ...
-    def Event(self, lock: Optional[_LockLike] = ...) -> synchronize.Event: ...
+    def Event(self) -> synchronize.Event: ...
     def Lock(self) -> synchronize.Lock: ...
     def RLock(self) -> synchronize.RLock: ...
     def Semaphore(self, value: int = ...) -> synchronize.Semaphore: ...