stdlib: audit more callback annotations (#8209)

stdlib/sched.pyi

@@ -1,15 +1,18 @@
 import sys
 from collections.abc import Callable
 from typing import Any, NamedTuple
+from typing_extensions import TypeAlias
 
 __all__ = ["scheduler"]
 
+_ActionCallback: TypeAlias = Callable[..., Any]
+
 if sys.version_info >= (3, 10):
     class Event(NamedTuple):
         time: float
         priority: Any
         sequence: int
-        action: Callable[..., Any]
+        action: _ActionCallback
         argument: tuple[Any, ...]
         kwargs: dict[str, Any]
 
@@ -17,7 +20,7 @@ else:
     class Event(NamedTuple):
         time: float
         priority: Any
-        action: Callable[..., Any]
+        action: _ActionCallback
         argument: tuple[Any, ...]
         kwargs: dict[str, Any]
 
@@ -27,20 +30,10 @@ class scheduler:
 
     def __init__(self, timefunc: Callable[[], float] = ..., delayfunc: Callable[[float], object] = ...) -> None: ...
     def enterabs(
-        self,
-        time: float,
-        priority: Any,
-        action: Callable[..., Any],
-        argument: tuple[Any, ...] = ...,
-        kwargs: dict[str, Any] = ...,
+        self, time: float, priority: Any, action: _ActionCallback, argument: tuple[Any, ...] = ..., kwargs: dict[str, Any] = ...
     ) -> Event: ...
     def enter(
-        self,
-        delay: float,
-        priority: Any,
-        action: Callable[..., Any],
-        argument: tuple[Any, ...] = ...,
-        kwargs: dict[str, Any] = ...,
+        self, delay: float, priority: Any, action: _ActionCallback, argument: tuple[Any, ...] = ..., kwargs: dict[str, Any] = ...
     ) -> Event: ...
     def run(self, blocking: bool = ...) -> float | None: ...
     def cancel(self, event: Event) -> None: ...