Remove, move or # noqa more TypeAlias declarations (#8450)

stdlib/email/__init__.pyi

@@ -5,8 +5,8 @@ from typing import IO, Union
 from typing_extensions import TypeAlias
 
 # Definitions imported by multiple submodules in typeshed
-_ParamType: TypeAlias = Union[str, tuple[str | None, str | None, str]]
-_ParamsType: TypeAlias = Union[str, None, tuple[str, str | None, str]]
+_ParamType: TypeAlias = Union[str, tuple[str | None, str | None, str]]  # noqa: Y047
+_ParamsType: TypeAlias = Union[str, None, tuple[str, str | None, str]]  # noqa: Y047
 
 def message_from_string(s: str, _class: Callable[[], Message] = ..., *, policy: Policy = ...) -> Message: ...
 def message_from_bytes(s: bytes, _class: Callable[[], Message] = ..., *, policy: Policy = ...) -> Message: ...

stdlib/lib2to3/pgen2/__init__.pyi

@@ -5,4 +5,4 @@ from typing import Any
 from typing_extensions import TypeAlias
 
 # This is imported in several lib2to3/pgen2 submodules
-_Convert: TypeAlias = Callable[[Grammar, _RawNode], Any]
+_Convert: TypeAlias = Callable[[Grammar, _RawNode], Any]  # noqa: Y047

stdlib/multiprocessing/__init__.pyi

@@ -1,5 +1,5 @@
 import sys
-from multiprocessing import context, reduction as reducer, synchronize
+from multiprocessing import context, reduction as reducer
 from multiprocessing.context import (
     AuthenticationError as AuthenticationError,
     BufferTooShort as BufferTooShort,
@@ -10,12 +10,14 @@ from multiprocessing.context import (
 from multiprocessing.process import active_children as active_children, current_process as current_process
 
 # These are technically functions that return instances of these Queue classes.
-# Using them as annotations is deprecated. Either use imports from
-# multiprocessing.queues or the aliases defined below. See #4266 for discussion.
+# The stub here doesn't reflect reality exactly --
+# while e.g. `multiprocessing.queues.Queue` is a class,
+# `multiprocessing.Queue` is actually a function at runtime.
+# Avoid using `multiprocessing.Queue` as a type annotation;
+# use imports from multiprocessing.queues instead.
+# See #4266 and #8450 for discussion.
 from multiprocessing.queues import JoinableQueue as JoinableQueue, Queue as Queue, SimpleQueue as SimpleQueue
 from multiprocessing.spawn import freeze_support as freeze_support
-from typing import TypeVar
-from typing_extensions import TypeAlias
 
 if sys.version_info >= (3, 8):
     from multiprocessing.process import parent_process as parent_process
@@ -62,27 +64,6 @@ __all__ = [
 if sys.version_info >= (3, 8):
     __all__ += ["parent_process"]
 
-# The following type aliases can be used to annotate the return values of
-# the corresponding functions. They are not defined at runtime.
-#
-# from multiprocessing import Lock
-# from typing import TYPE_CHECKING
-# if TYPE_CHECKING:
-#     from multiprocessing import _LockType
-# lock: _LockType = Lock()
-
-_T = TypeVar("_T")
-_QueueType: TypeAlias = Queue[_T]
-_SimpleQueueType: TypeAlias = SimpleQueue[_T]
-_JoinableQueueType: TypeAlias = JoinableQueue[_T]
-_BarrierType: TypeAlias = synchronize.Barrier
-_BoundedSemaphoreType: TypeAlias = synchronize.BoundedSemaphore
-_ConditionType: TypeAlias = synchronize.Condition
-_EventType: TypeAlias = synchronize.Event
-_LockType: TypeAlias = synchronize.Lock
-_RLockType: TypeAlias = synchronize.RLock
-_SemaphoreType: TypeAlias = synchronize.Semaphore
-
 # These functions (really bound methods)
 # are all autogenerated at runtime here: https://github.com/python/cpython/blob/600c65c094b0b48704d8ec2416930648052ba715/Lib/multiprocessing/__init__.py#L23
 RawValue = context._default_context.RawValue

stdlib/tkinter/__init__.pyi

@@ -186,13 +186,6 @@ _EntryValidateCommand: TypeAlias = (
 )  # example when it's sequence:  entry['invalidcommand'] = [entry.register(print), '%P']
 _GridIndex: TypeAlias = int | str | Literal["all"]
 _ImageSpec: TypeAlias = _Image | str  # str can be from e.g. tkinter.image_names()
-_Padding: TypeAlias = Union[
-    _ScreenUnits,
-    tuple[_ScreenUnits],
-    tuple[_ScreenUnits, _ScreenUnits],
-    tuple[_ScreenUnits, _ScreenUnits, _ScreenUnits],
-    tuple[_ScreenUnits, _ScreenUnits, _ScreenUnits, _ScreenUnits],
-]
 _Relief: TypeAlias = Literal["raised", "sunken", "flat", "ridge", "solid", "groove"]  # manual page: Tk_GetRelief
 _ScreenUnits: TypeAlias = str | float  # Often the right type instead of int. Manual page: Tk_GetPixels
 # -xscrollcommand and -yscrollcommand in 'options' manual page

stdlib/tkinter/ttk.pyi

@@ -4,7 +4,7 @@ import tkinter
 from _typeshed import Incomplete
 from collections.abc import Callable
 from tkinter.font import _FontDescription
-from typing import Any, overload
+from typing import Any, Union, overload
 from typing_extensions import Literal, TypeAlias, TypedDict
 
 __all__ = [
@@ -38,6 +38,14 @@ __all__ = [
 def tclobjs_to_py(adict: dict[Any, Any]) -> dict[Any, Any]: ...
 def setup_master(master: Incomplete | None = ...): ...
 
+_Padding: TypeAlias = Union[
+    tkinter._ScreenUnits,
+    tuple[tkinter._ScreenUnits],
+    tuple[tkinter._ScreenUnits, tkinter._ScreenUnits],
+    tuple[tkinter._ScreenUnits, tkinter._ScreenUnits, tkinter._ScreenUnits],
+    tuple[tkinter._ScreenUnits, tkinter._ScreenUnits, tkinter._ScreenUnits, tkinter._ScreenUnits],
+]
+
 # from ttk_widget (aka ttk::widget) manual page, differs from tkinter._Compound
 _TtkCompound: TypeAlias = Literal["text", "image", tkinter._Compound]
 
@@ -337,7 +345,7 @@ class Frame(Widget):
         cursor: tkinter._Cursor = ...,
         height: tkinter._ScreenUnits = ...,
         name: str = ...,
-        padding: tkinter._Padding = ...,
+        padding: _Padding = ...,
         relief: tkinter._Relief = ...,
         style: str = ...,
         takefocus: tkinter._TakeFocusValue = ...,
@@ -352,7 +360,7 @@ class Frame(Widget):
         borderwidth: tkinter._ScreenUnits = ...,
         cursor: tkinter._Cursor = ...,
         height: tkinter._ScreenUnits = ...,
-        padding: tkinter._Padding = ...,
+        padding: _Padding = ...,
         relief: tkinter._Relief = ...,
         style: str = ...,
         takefocus: tkinter._TakeFocusValue = ...,
@@ -379,7 +387,7 @@ class Label(Widget):
         image: tkinter._ImageSpec = ...,
         justify: Literal["left", "center", "right"] = ...,
         name: str = ...,
-        padding: tkinter._Padding = ...,
+        padding: _Padding = ...,
         relief: tkinter._Relief = ...,
         state: str = ...,
         style: str = ...,
@@ -405,7 +413,7 @@ class Label(Widget):
         foreground: tkinter._Color = ...,
         image: tkinter._ImageSpec = ...,
         justify: Literal["left", "center", "right"] = ...,
-        padding: tkinter._Padding = ...,
+        padding: _Padding = ...,
         relief: tkinter._Relief = ...,
         state: str = ...,
         style: str = ...,
@@ -433,7 +441,7 @@ class Labelframe(Widget):
         labelanchor: Literal["nw", "n", "ne", "en", "e", "es", "se", "s", "sw", "ws", "w", "wn"] = ...,
         labelwidget: tkinter.Misc = ...,
         name: str = ...,
-        padding: tkinter._Padding = ...,
+        padding: _Padding = ...,
         relief: tkinter._Relief = ...,  # undocumented
         style: str = ...,
         takefocus: tkinter._TakeFocusValue = ...,
@@ -452,7 +460,7 @@ class Labelframe(Widget):
         height: tkinter._ScreenUnits = ...,
         labelanchor: Literal["nw", "n", "ne", "en", "e", "es", "se", "s", "sw", "ws", "w", "wn"] = ...,
         labelwidget: tkinter.Misc = ...,
-        padding: tkinter._Padding = ...,
+        padding: _Padding = ...,
         relief: tkinter._Relief = ...,
         style: str = ...,
         takefocus: tkinter._TakeFocusValue = ...,
@@ -519,7 +527,7 @@ class Notebook(Widget):
         cursor: tkinter._Cursor = ...,
         height: int = ...,
         name: str = ...,
-        padding: tkinter._Padding = ...,
+        padding: _Padding = ...,
         style: str = ...,
         takefocus: tkinter._TakeFocusValue = ...,
         width: int = ...,
@@ -531,7 +539,7 @@ class Notebook(Widget):
         *,
         cursor: tkinter._Cursor = ...,
         height: int = ...,
-        padding: tkinter._Padding = ...,
+        padding: _Padding = ...,
         style: str = ...,
         takefocus: tkinter._TakeFocusValue = ...,
         width: int = ...,
@@ -545,7 +553,7 @@ class Notebook(Widget):
         *,
         state: Literal["normal", "disabled", "hidden"] = ...,
         sticky: str = ...,  # consists of letters 'n', 's', 'w', 'e', no repeats, may be empty
-        padding: tkinter._Padding = ...,
+        padding: _Padding = ...,
         text: str = ...,
         image=...,  # Sequence of an image name, followed by zero or more (sequences of one or more state names followed by an image name)
         compound: tkinter._Compound = ...,
@@ -958,7 +966,7 @@ class Treeview(Widget, tkinter.XView, tkinter.YView):
         displaycolumns: str | list[str] | tuple[str, ...] | list[int] | tuple[int, ...] | Literal["#all"] = ...,
         height: int = ...,
         name: str = ...,
-        padding: tkinter._Padding = ...,
+        padding: _Padding = ...,
         selectmode: Literal["extended", "browse", "none"] = ...,
         # list/tuple of Literal don't actually work in mypy
         #
@@ -979,7 +987,7 @@ class Treeview(Widget, tkinter.XView, tkinter.YView):
         cursor: tkinter._Cursor = ...,
         displaycolumns: str | list[str] | tuple[str, ...] | list[int] | tuple[int, ...] | Literal["#all"] = ...,
         height: int = ...,
-        padding: tkinter._Padding = ...,
+        padding: _Padding = ...,
         selectmode: Literal["extended", "browse", "none"] = ...,
         show: Literal["tree", "headings", "tree headings", ""] | list[str] | tuple[str, ...] = ...,
         style: str = ...,