diff --git a/misc/typeshed_patches/0001-Partially-revert-Clean-up-argparse-hacks.patch b/misc/typeshed_patches/0001-Partially-revert-Clean-up-argparse-hacks.patch
index 5c31569711e5..a1b1966fea1e 100644
--- a/misc/typeshed_patches/0001-Partially-revert-Clean-up-argparse-hacks.patch
+++ b/misc/typeshed_patches/0001-Partially-revert-Clean-up-argparse-hacks.patch
@@ -1,4 +1,4 @@
-From 84a9d586544a0408d4654f57f83a93cb048070fb Mon Sep 17 00:00:00 2001
+From b6d495c10e79fb56ff64f8fb90c87894090f9cbe Mon Sep 17 00:00:00 2001
 From: Marc Mueller <30130371+cdce8p@users.noreply.github.com>
 Date: Sat, 15 Feb 2025 20:11:06 +0100
 Subject: [PATCH] Partially revert Clean up argparse hacks
@@ -8,7 +8,7 @@ Subject: [PATCH] Partially revert Clean up argparse hacks
  1 file changed, 5 insertions(+), 3 deletions(-)
 
 diff --git a/mypy/typeshed/stdlib/argparse.pyi b/mypy/typeshed/stdlib/argparse.pyi
-index b9fa31139..3c3ba116a 100644
+index ae99eb036..c87b8f4fc 100644
 --- a/mypy/typeshed/stdlib/argparse.pyi
 +++ b/mypy/typeshed/stdlib/argparse.pyi
 @@ -2,7 +2,7 @@ import sys
@@ -41,5 +41,5 @@ index b9fa31139..3c3ba116a 100644
          default: Any = ...,
          type: _ActionType = ...,
 -- 
-2.50.1
+2.52.0
 
diff --git a/misc/typeshed_patches/0001-Remove-use-of-LiteralString-in-builtins-13743.patch b/misc/typeshed_patches/0001-Remove-use-of-LiteralString-in-builtins-13743.patch
index f9334251c2bd..b8d0d9812198 100644
--- a/misc/typeshed_patches/0001-Remove-use-of-LiteralString-in-builtins-13743.patch
+++ b/misc/typeshed_patches/0001-Remove-use-of-LiteralString-in-builtins-13743.patch
@@ -1,4 +1,4 @@
-From 3229a6066cff3d80d6cb923322c2d42a300d0be3 Mon Sep 17 00:00:00 2001
+From ed11d7e0204868ef1a43c17ed950372b1d78f497 Mon Sep 17 00:00:00 2001
 From: Shantanu <12621235+hauntsaninja@users.noreply.github.com>
 Date: Mon, 26 Sep 2022 12:55:07 -0700
 Subject: [PATCH] Remove use of LiteralString in builtins (#13743)
@@ -8,10 +8,10 @@ Subject: [PATCH] Remove use of LiteralString in builtins (#13743)
  1 file changed, 1 insertion(+), 99 deletions(-)
 
 diff --git a/mypy/typeshed/stdlib/builtins.pyi b/mypy/typeshed/stdlib/builtins.pyi
-index 969d16876..044e264d2 100644
+index 693dd0b77..8acdeadff 100644
 --- a/mypy/typeshed/stdlib/builtins.pyi
 +++ b/mypy/typeshed/stdlib/builtins.pyi
-@@ -63,7 +63,6 @@ from typing import (  # noqa: Y022,UP035
+@@ -64,7 +64,6 @@ from typing import (  # noqa: Y022,UP035
  from typing_extensions import (  # noqa: Y023
      Concatenate,
      Literal,
@@ -19,7 +19,7 @@ index 969d16876..044e264d2 100644
      ParamSpec,
      Self,
      TypeAlias,
-@@ -480,31 +479,16 @@ class str(Sequence[str]):
+@@ -482,31 +481,16 @@ class str(Sequence[str]):
      def __new__(cls, object: object = "") -> Self: ...
      @overload
      def __new__(cls, object: ReadableBuffer, encoding: str = "utf-8", errors: str = "strict") -> Self: ...
@@ -51,7 +51,7 @@ index 969d16876..044e264d2 100644
      def format(self, *args: object, **kwargs: object) -> str: ...
      def format_map(self, mapping: _FormatMapMapping, /) -> str: ...
      def index(self, sub: str, start: SupportsIndex | None = None, end: SupportsIndex | None = None, /) -> int: ...
-@@ -520,98 +504,34 @@ class str(Sequence[str]):
+@@ -522,98 +506,34 @@ class str(Sequence[str]):
      def isspace(self) -> bool: ...
      def istitle(self) -> bool: ...
      def isupper(self) -> bool: ...
@@ -150,7 +150,7 @@ index 969d16876..044e264d2 100644
      def zfill(self, width: SupportsIndex, /) -> str: ...  # type: ignore[misc]
      @staticmethod
      @overload
-@@ -622,39 +542,21 @@ class str(Sequence[str]):
+@@ -624,39 +544,21 @@ class str(Sequence[str]):
      @staticmethod
      @overload
      def maketrans(x: str, y: str, z: str, /) -> dict[int, int | None]: ...
@@ -192,5 +192,5 @@ index 969d16876..044e264d2 100644
      def __getnewargs__(self) -> tuple[str]: ...
      def __format__(self, format_spec: str, /) -> str: ...
 -- 
-2.51.1
+2.52.0
 
diff --git a/misc/typeshed_patches/0001-Revert-Remove-redundant-inheritances-from-Iterator.patch b/misc/typeshed_patches/0001-Revert-Remove-redundant-inheritances-from-Iterator.patch
index 7110eff5f148..0d64077e63d7 100644
--- a/misc/typeshed_patches/0001-Revert-Remove-redundant-inheritances-from-Iterator.patch
+++ b/misc/typeshed_patches/0001-Revert-Remove-redundant-inheritances-from-Iterator.patch
@@ -1,4 +1,4 @@
-From 7678bc3f80e4d3f04a0ff0ee3a7d51f49ae4c465 Mon Sep 17 00:00:00 2001
+From 69791281c2c5e919cea9a77c4a771f79d9e70384 Mon Sep 17 00:00:00 2001
 From: Marc Mueller <30130371+cdce8p@users.noreply.github.com>
 Date: Sat, 21 Dec 2024 22:36:38 +0100
 Subject: [PATCH] Revert Remove redundant inheritances from Iterator in
@@ -36,10 +36,10 @@ index d663f5d93..f43178e4d 100644
      @property
      def _exception(self) -> BaseException | None: ...
 diff --git a/mypy/typeshed/stdlib/builtins.pyi b/mypy/typeshed/stdlib/builtins.pyi
-index 044e264d2..6d813f172 100644
+index 8acdeadff..5a3bb5908 100644
 --- a/mypy/typeshed/stdlib/builtins.pyi
 +++ b/mypy/typeshed/stdlib/builtins.pyi
-@@ -1210,7 +1210,7 @@ class frozenset(AbstractSet[_T_co]):
+@@ -1226,7 +1226,7 @@ class frozenset(AbstractSet[_T_co]):
      def __class_getitem__(cls, item: Any, /) -> GenericAlias: ...
  
  @disjoint_base
@@ -48,7 +48,7 @@ index 044e264d2..6d813f172 100644
      def __new__(cls, iterable: Iterable[_T], start: int = 0) -> Self: ...
      def __iter__(self) -> Self: ...
      def __next__(self) -> tuple[int, _T]: ...
-@@ -1404,7 +1404,7 @@ else:
+@@ -1413,7 +1413,7 @@ else:
  exit: _sitebuiltins.Quitter
  
  @disjoint_base
@@ -57,7 +57,7 @@ index 044e264d2..6d813f172 100644
      @overload
      def __new__(cls, function: None, iterable: Iterable[_T | None], /) -> Self: ...
      @overload
-@@ -1468,7 +1468,7 @@ license: _sitebuiltins._Printer
+@@ -1477,7 +1477,7 @@ license: _sitebuiltins._Printer
  
  def locals() -> dict[str, Any]: ...
  @disjoint_base
@@ -66,7 +66,7 @@ index 044e264d2..6d813f172 100644
      # 3.14 adds `strict` argument.
      if sys.version_info >= (3, 14):
          @overload
-@@ -1775,7 +1775,7 @@ def pow(base: _SupportsSomeKindOfPow, exp: complex, mod: None = None) -> complex
+@@ -1784,7 +1784,7 @@ def pow(base: _SupportsSomeKindOfPow, exp: complex, mod: None = None) -> complex
  quit: _sitebuiltins.Quitter
  
  @disjoint_base
@@ -75,7 +75,7 @@ index 044e264d2..6d813f172 100644
      @overload
      def __new__(cls, sequence: Reversible[_T], /) -> Iterator[_T]: ...  # type: ignore[misc]
      @overload
-@@ -1839,7 +1839,7 @@ def vars(object: type, /) -> types.MappingProxyType[str, Any]: ...
+@@ -1848,7 +1848,7 @@ def vars(object: type, /) -> types.MappingProxyType[str, Any]: ...
  @overload
  def vars(object: Any = ..., /) -> dict[str, Any]: ...
  @disjoint_base
@@ -107,7 +107,7 @@ index 2c8e7109c..4ed0ab1d8 100644
      restkey: _T | None
      restval: str | Any | None
 diff --git a/mypy/typeshed/stdlib/fileinput.pyi b/mypy/typeshed/stdlib/fileinput.pyi
-index 910d63814..eb942bc55 100644
+index 6778b7648..95164de2f 100644
 --- a/mypy/typeshed/stdlib/fileinput.pyi
 +++ b/mypy/typeshed/stdlib/fileinput.pyi
 @@ -1,8 +1,8 @@
@@ -118,7 +118,7 @@ index 910d63814..eb942bc55 100644
  from types import GenericAlias, TracebackType
 -from typing import IO, Any, AnyStr, Generic, Literal, Protocol, overload, type_check_only
 +from typing import IO, Any, AnyStr, Literal, Protocol, overload, type_check_only
- from typing_extensions import Self, TypeAlias
+ from typing_extensions import Self, TypeAlias, deprecated
  
  __all__ = [
 @@ -105,7 +105,7 @@ def fileno() -> int: ...
@@ -131,7 +131,7 @@ index 910d63814..eb942bc55 100644
          # encoding and errors are added
          @overload
 diff --git a/mypy/typeshed/stdlib/itertools.pyi b/mypy/typeshed/stdlib/itertools.pyi
-index fe4ccbdf8..73745fe92 100644
+index 8a924ad8b..5c2bf7f83 100644
 --- a/mypy/typeshed/stdlib/itertools.pyi
 +++ b/mypy/typeshed/stdlib/itertools.pyi
 @@ -28,7 +28,7 @@ _Predicate: TypeAlias = Callable[[_T], object]
@@ -166,7 +166,7 @@ index fe4ccbdf8..73745fe92 100644
 -class accumulate(Generic[_T]):
 +class accumulate(Iterator[_T]):
      @overload
-     def __new__(cls, iterable: Iterable[_T], func: None = None, *, initial: _T | None = ...) -> Self: ...
+     def __new__(cls, iterable: Iterable[_T], func: None = None, *, initial: _T | None = None) -> Self: ...
      @overload
 @@ -64,7 +64,7 @@ class accumulate(Generic[_T]):
      def __next__(self) -> _T: ...
@@ -239,7 +239,7 @@ index fe4ccbdf8..73745fe92 100644
 +class zip_longest(Iterator[_T_co]):
      # one iterable (fillvalue doesn't matter)
      @overload
-     def __new__(cls, iter1: Iterable[_T1], /, *, fillvalue: object = ...) -> zip_longest[tuple[_T1]]: ...
+     def __new__(cls, iter1: Iterable[_T1], /, *, fillvalue: object = None) -> zip_longest[tuple[_T1]]: ...
 @@ -202,7 +202,7 @@ class zip_longest(Generic[_T_co]):
      def __next__(self) -> _T_co: ...
  
@@ -291,8 +291,8 @@ index fe4ccbdf8..73745fe92 100644
 -    class batched(Generic[_T_co]):
 +    class batched(Iterator[tuple[_T_co, ...]], Generic[_T_co]):
          if sys.version_info >= (3, 13):
-             def __new__(cls, iterable: Iterable[_T_co], n: int, *, strict: bool = False) -> Self: ...
-         else:
+             @overload
+             def __new__(cls, iterable: Iterable[_T], n: Literal[1], *, strict: Literal[True]) -> batched[tuple[_T]]: ...
 diff --git a/mypy/typeshed/stdlib/multiprocessing/pool.pyi b/mypy/typeshed/stdlib/multiprocessing/pool.pyi
 index b79f9e773..f276372d0 100644
 --- a/mypy/typeshed/stdlib/multiprocessing/pool.pyi
@@ -313,10 +313,10 @@ index b79f9e773..f276372d0 100644
      def __iter__(self) -> Self: ...
      def next(self, timeout: float | None = None) -> _T: ...
 diff --git a/mypy/typeshed/stdlib/sqlite3/__init__.pyi b/mypy/typeshed/stdlib/sqlite3/__init__.pyi
-index 6b0f1ba94..882cd143c 100644
+index 04b978b1b..e4604144f 100644
 --- a/mypy/typeshed/stdlib/sqlite3/__init__.pyi
 +++ b/mypy/typeshed/stdlib/sqlite3/__init__.pyi
-@@ -407,7 +407,7 @@ class Connection:
+@@ -408,7 +408,7 @@ class Connection:
      ) -> Literal[False]: ...
  
  @disjoint_base
@@ -326,5 +326,5 @@ index 6b0f1ba94..882cd143c 100644
      @property
      def connection(self) -> Connection: ...
 -- 
-2.51.1
+2.52.0
 
diff --git a/misc/typeshed_patches/0001-Revert-sum-literal-integer-change-13961.patch b/misc/typeshed_patches/0001-Revert-sum-literal-integer-change-13961.patch
index 559e32569f2b..d05f66ff2610 100644
--- a/misc/typeshed_patches/0001-Revert-sum-literal-integer-change-13961.patch
+++ b/misc/typeshed_patches/0001-Revert-sum-literal-integer-change-13961.patch
@@ -1,4 +1,4 @@
-From 16b0b50ec77e470f24145071acde5274a1de53a0 Mon Sep 17 00:00:00 2001
+From 0e30b762e8335f02e19977c055ac7b98e707991c Mon Sep 17 00:00:00 2001
 From: Shantanu <12621235+hauntsaninja@users.noreply.github.com>
 Date: Sat, 29 Oct 2022 12:47:21 -0700
 Subject: [PATCH] Revert sum literal integer change (#13961)
@@ -19,10 +19,10 @@ within mypy, I might pursue upstreaming this in typeshed.
  1 file changed, 1 insertion(+), 1 deletion(-)
 
 diff --git a/mypy/typeshed/stdlib/builtins.pyi b/mypy/typeshed/stdlib/builtins.pyi
-index 900c4c93f..d874edd8f 100644
+index 5a3bb5908..0f2196070 100644
 --- a/mypy/typeshed/stdlib/builtins.pyi
 +++ b/mypy/typeshed/stdlib/builtins.pyi
-@@ -1782,7 +1782,7 @@ _SupportsSumNoDefaultT = TypeVar("_SupportsSumNoDefaultT", bound=_SupportsSumWit
+@@ -1835,7 +1835,7 @@ _SupportsSumNoDefaultT = TypeVar("_SupportsSumNoDefaultT", bound=_SupportsSumWit
  # without creating many false-positive errors (see #7578).
  # Instead, we special-case the most common examples of this: bool and literal integers.
  @overload
@@ -32,5 +32,5 @@ index 900c4c93f..d874edd8f 100644
  def sum(iterable: Iterable[_SupportsSumNoDefaultT], /) -> _SupportsSumNoDefaultT | Literal[0]: ...
  @overload
 -- 
-2.49.0
+2.52.0
 
diff --git a/misc/typeshed_patches/0001-Revert-typeshed-ctypes-change.patch b/misc/typeshed_patches/0001-Revert-typeshed-ctypes-change.patch
index c16f5ebaa92e..e795be53bce7 100644
--- a/misc/typeshed_patches/0001-Revert-typeshed-ctypes-change.patch
+++ b/misc/typeshed_patches/0001-Revert-typeshed-ctypes-change.patch
@@ -1,20 +1,20 @@
-From 85c0cfb55c6211c2a47c3f45d2ff28fa76f8204b Mon Sep 17 00:00:00 2001
+From 80a710e0e2c09612c6fc30c644f2052450e69ccd Mon Sep 17 00:00:00 2001
 From: AlexWaygood <alex.waygood@gmail.com>
 Date: Mon, 1 May 2023 20:34:55 +0100
-Subject: [PATCH] Revert typeshed ctypes change Since the plugin provides
- superior type checking:
- https://github.com/python/mypy/pull/13987#issuecomment-1310863427 A manual
- cherry-pick of e437cdf.
+Subject: [PATCH] Revert typeshed ctypes change
 
+The plugin provides superior type checking:
+https://github.com/python/mypy/pull/13987#issuecomment-1310863427
+A manual cherry-pick of e437cdf.
 ---
  mypy/typeshed/stdlib/_ctypes.pyi | 6 +-----
  1 file changed, 1 insertion(+), 5 deletions(-)
 
 diff --git a/mypy/typeshed/stdlib/_ctypes.pyi b/mypy/typeshed/stdlib/_ctypes.pyi
-index 944685646..dc8c7b2ca 100644
+index be7792818..b7a3fb104 100644
 --- a/mypy/typeshed/stdlib/_ctypes.pyi
 +++ b/mypy/typeshed/stdlib/_ctypes.pyi
-@@ -289,11 +289,7 @@ class Array(_CData, Generic[_CT], metaclass=_PyCArrayType):
+@@ -320,11 +320,7 @@ class Array(_CData, Generic[_CT], metaclass=_PyCArrayType):
      def _type_(self) -> type[_CT]: ...
      @_type_.setter
      def _type_(self, value: type[_CT]) -> None: ...
@@ -28,5 +28,5 @@ index 944685646..dc8c7b2ca 100644
      # TODO: These methods cannot be annotated correctly at the moment.
      # All of these "Any"s stand for the array's element type, but it's not possible to use _CT
 -- 
-2.49.0
+2.52.0
 
diff --git a/mypy/typeshed/stdlib/_frozen_importlib_external.pyi b/mypy/typeshed/stdlib/_frozen_importlib_external.pyi
index 4778be3af1f3..660cee6e84ec 100644
--- a/mypy/typeshed/stdlib/_frozen_importlib_external.pyi
+++ b/mypy/typeshed/stdlib/_frozen_importlib_external.pyi
@@ -9,7 +9,7 @@ from _typeshed.importlib import LoaderProtocol
 from collections.abc import Callable, Iterable, Iterator, Mapping, MutableSequence, Sequence
 from importlib.machinery import ModuleSpec
 from importlib.metadata import DistributionFinder, PathDistribution
-from typing import Any, Final, Literal
+from typing import Any, Final, Literal, overload
 from typing_extensions import Self, deprecated
 
 if sys.version_info >= (3, 10):
@@ -26,7 +26,13 @@ else:
 
 MAGIC_NUMBER: Final[bytes]
 
-def cache_from_source(path: StrPath, debug_override: bool | None = None, *, optimization: Any | None = None) -> str: ...
+@overload
+@deprecated(
+    "The `debug_override` parameter is deprecated since Python 3.5; will be removed in Python 3.15. Use `optimization` instead."
+)
+def cache_from_source(path: StrPath, debug_override: bool, *, optimization: None = None) -> str: ...
+@overload
+def cache_from_source(path: StrPath, debug_override: None = None, *, optimization: Any | None = None) -> str: ...
 def source_from_cache(path: StrPath) -> str: ...
 def decode_source(source_bytes: ReadableBuffer) -> str: ...
 def spec_from_file_location(
diff --git a/mypy/typeshed/stdlib/_tkinter.pyi b/mypy/typeshed/stdlib/_tkinter.pyi
index a3868f467c6c..5e46668e08b1 100644
--- a/mypy/typeshed/stdlib/_tkinter.pyi
+++ b/mypy/typeshed/stdlib/_tkinter.pyi
@@ -1,6 +1,7 @@
 import sys
+from _typeshed import FileDescriptorLike, Incomplete
 from collections.abc import Callable
-from typing import Any, ClassVar, Final, final
+from typing import Any, ClassVar, Final, Literal, final, overload
 from typing_extensions import TypeAlias, deprecated
 
 # _tkinter is meant to be only used internally by tkinter, but some tkinter
@@ -54,22 +55,23 @@ _TkinterTraceFunc: TypeAlias = Callable[[tuple[str, ...]], object]
 @final
 class TkappType:
     # Please keep in sync with tkinter.Tk
-    def adderrorinfo(self, msg: str, /): ...
+    def adderrorinfo(self, msg: str, /) -> None: ...
     def call(self, command: Any, /, *args: Any) -> Any: ...
-    def createcommand(self, name: str, func, /): ...
+    # TODO: Figure out what arguments the following `func` callbacks should accept
+    def createcommand(self, name: str, func: Callable[..., object], /) -> None: ...
     if sys.platform != "win32":
-        def createfilehandler(self, file, mask: int, func, /): ...
-        def deletefilehandler(self, file, /) -> None: ...
+        def createfilehandler(self, file: FileDescriptorLike, mask: int, func: Callable[..., object], /) -> None: ...
+        def deletefilehandler(self, file: FileDescriptorLike, /) -> None: ...
 
-    def createtimerhandler(self, milliseconds: int, func, /): ...
-    def deletecommand(self, name: str, /): ...
-    def dooneevent(self, flags: int = 0, /): ...
+    def createtimerhandler(self, milliseconds: int, func: Callable[..., object], /): ...
+    def deletecommand(self, name: str, /) -> None: ...
+    def dooneevent(self, flags: int = 0, /) -> int: ...
     def eval(self, script: str, /) -> str: ...
-    def evalfile(self, fileName: str, /): ...
-    def exprboolean(self, s: str, /): ...
-    def exprdouble(self, s: str, /): ...
-    def exprlong(self, s: str, /): ...
-    def exprstring(self, s: str, /): ...
+    def evalfile(self, fileName: str, /) -> str: ...
+    def exprboolean(self, s: str, /) -> Literal[0, 1]: ...
+    def exprdouble(self, s: str, /) -> float: ...
+    def exprlong(self, s: str, /) -> int: ...
+    def exprstring(self, s: str, /) -> str: ...
     def getboolean(self, arg, /) -> bool: ...
     def getdouble(self, arg, /) -> float: ...
     def getint(self, arg, /) -> int: ...
@@ -81,15 +83,23 @@ class TkappType:
     def loadtk(self) -> None: ...
     def mainloop(self, threshold: int = 0, /) -> None: ...
     def quit(self) -> None: ...
-    def record(self, script: str, /): ...
+    def record(self, script: str, /) -> str: ...
     def setvar(self, *ags, **kwargs): ...
     if sys.version_info < (3, 11):
         @deprecated("Deprecated since Python 3.9; removed in Python 3.11. Use `splitlist()` instead.")
         def split(self, arg, /): ...
 
-    def splitlist(self, arg, /): ...
+    def splitlist(self, arg, /) -> tuple[Incomplete, ...]: ...
     def unsetvar(self, *args, **kwargs): ...
-    def wantobjects(self, *args, **kwargs): ...
+    if sys.version_info >= (3, 14):
+        @overload
+        def wantobjects(self) -> Literal[0, 1]: ...
+    else:
+        @overload
+        def wantobjects(self) -> bool: ...
+
+    @overload
+    def wantobjects(self, wantobjects: Literal[0, 1] | bool, /) -> None: ...
     def willdispatch(self) -> None: ...
     if sys.version_info >= (3, 12):
         def gettrace(self, /) -> _TkinterTraceFunc | None: ...
@@ -112,7 +122,7 @@ TK_VERSION: Final[str]
 
 @final
 class TkttType:
-    def deletetimerhandler(self): ...
+    def deletetimerhandler(self) -> None: ...
 
 if sys.version_info >= (3, 13):
     def create(
@@ -125,7 +135,7 @@ if sys.version_info >= (3, 13):
         sync: bool = False,
         use: str | None = None,
         /,
-    ): ...
+    ) -> TkappType: ...
 
 else:
     def create(
@@ -138,7 +148,7 @@ else:
         sync: bool = False,
         use: str | None = None,
         /,
-    ): ...
+    ) -> TkappType: ...
 
 def getbusywaitinterval() -> int: ...
 def setbusywaitinterval(new_val: int, /) -> None: ...
diff --git a/mypy/typeshed/stdlib/asyncio/base_events.pyi b/mypy/typeshed/stdlib/asyncio/base_events.pyi
index 1f493210d665..0d8ac2d47491 100644
--- a/mypy/typeshed/stdlib/asyncio/base_events.pyi
+++ b/mypy/typeshed/stdlib/asyncio/base_events.pyi
@@ -83,7 +83,16 @@ class BaseEventLoop(AbstractEventLoop):
     # Future methods
     def create_future(self) -> Future[Any]: ...
     # Tasks methods
-    if sys.version_info >= (3, 11):
+    if sys.version_info >= (3, 14):
+        def create_task(
+            self,
+            coro: _CoroutineLike[_T],
+            *,
+            name: object = None,
+            context: Context | None = None,
+            eager_start: bool | None = None,
+        ) -> Task[_T]: ...
+    elif sys.version_info >= (3, 11):
         def create_task(self, coro: _CoroutineLike[_T], *, name: object = None, context: Context | None = None) -> Task[_T]: ...
     else:
         def create_task(self, coro: _CoroutineLike[_T], *, name: object = None) -> Task[_T]: ...
diff --git a/mypy/typeshed/stdlib/asyncio/events.pyi b/mypy/typeshed/stdlib/asyncio/events.pyi
index 5dc698bc5e15..4f2f45355f5b 100644
--- a/mypy/typeshed/stdlib/asyncio/events.pyi
+++ b/mypy/typeshed/stdlib/asyncio/events.pyi
@@ -161,7 +161,17 @@ class AbstractEventLoop:
     @abstractmethod
     def create_future(self) -> Future[Any]: ...
     # Tasks methods
-    if sys.version_info >= (3, 11):
+    if sys.version_info >= (3, 14):
+        @abstractmethod
+        def create_task(
+            self,
+            coro: _CoroutineLike[_T],
+            *,
+            name: str | None = None,
+            context: Context | None = None,
+            eager_start: bool | None = None,
+        ) -> Task[_T]: ...
+    elif sys.version_info >= (3, 11):
         @abstractmethod
         def create_task(
             self, coro: _CoroutineLike[_T], *, name: str | None = None, context: Context | None = None
diff --git a/mypy/typeshed/stdlib/asyncio/taskgroups.pyi b/mypy/typeshed/stdlib/asyncio/taskgroups.pyi
index 30b7c9129f6f..2968b0719761 100644
--- a/mypy/typeshed/stdlib/asyncio/taskgroups.pyi
+++ b/mypy/typeshed/stdlib/asyncio/taskgroups.pyi
@@ -22,5 +22,18 @@ class TaskGroup:
 
     async def __aenter__(self) -> Self: ...
     async def __aexit__(self, et: type[BaseException] | None, exc: BaseException | None, tb: TracebackType | None) -> None: ...
-    def create_task(self, coro: _CoroutineLike[_T], *, name: str | None = None, context: Context | None = None) -> Task[_T]: ...
+    if sys.version_info >= (3, 14):
+        def create_task(
+            self,
+            coro: _CoroutineLike[_T],
+            *,
+            name: str | None = None,
+            context: Context | None = None,
+            eager_start: bool | None = None,
+        ) -> Task[_T]: ...
+    else:
+        def create_task(
+            self, coro: _CoroutineLike[_T], *, name: str | None = None, context: Context | None = None
+        ) -> Task[_T]: ...
+
     def _on_task_done(self, task: Task[object]) -> None: ...
diff --git a/mypy/typeshed/stdlib/asyncio/tasks.pyi b/mypy/typeshed/stdlib/asyncio/tasks.pyi
index 1442f7400a9c..be9b60cd36ae 100644
--- a/mypy/typeshed/stdlib/asyncio/tasks.pyi
+++ b/mypy/typeshed/stdlib/asyncio/tasks.pyi
@@ -413,7 +413,12 @@ else:
 
 def all_tasks(loop: AbstractEventLoop | None = None) -> set[Task[Any]]: ...
 
-if sys.version_info >= (3, 11):
+if sys.version_info >= (3, 14):
+    def create_task(
+        coro: _CoroutineLike[_T], *, name: str | None = None, context: Context | None = None, eager_start: bool | None = None
+    ) -> Task[_T]: ...
+
+elif sys.version_info >= (3, 11):
     def create_task(coro: _CoroutineLike[_T], *, name: str | None = None, context: Context | None = None) -> Task[_T]: ...
 
 else:
diff --git a/mypy/typeshed/stdlib/builtins.pyi b/mypy/typeshed/stdlib/builtins.pyi
index bd425ff3c212..0f2196070de2 100644
--- a/mypy/typeshed/stdlib/builtins.pyi
+++ b/mypy/typeshed/stdlib/builtins.pyi
@@ -1078,9 +1078,9 @@ class dict(MutableMapping[_KT, _VT]):
     # __init__ should be kept roughly in line with `collections.UserDict.__init__`, which has similar semantics
     # Also multiprocessing.managers.SyncManager.dict()
     @overload
-    def __init__(self) -> None: ...
+    def __init__(self, /) -> None: ...
     @overload
-    def __init__(self: dict[str, _VT], **kwargs: _VT) -> None: ...  # pyright: ignore[reportInvalidTypeVarUse]  #11780
+    def __init__(self: dict[str, _VT], /, **kwargs: _VT) -> None: ...  # pyright: ignore[reportInvalidTypeVarUse]  #11780
     @overload
     def __init__(self, map: SupportsKeysAndGetItem[_KT, _VT], /) -> None: ...
     @overload
@@ -1105,7 +1105,7 @@ class dict(MutableMapping[_KT, _VT]):
     def __init__(self: dict[str, str], iterable: Iterable[list[str]], /) -> None: ...
     @overload
     def __init__(self: dict[bytes, bytes], iterable: Iterable[list[bytes]], /) -> None: ...
-    def __new__(cls, *args: Any, **kwargs: Any) -> Self: ...
+    def __new__(cls, /, *args: Any, **kwargs: Any) -> Self: ...
     def copy(self) -> dict[_KT, _VT]: ...
     def keys(self) -> dict_keys[_KT, _VT]: ...
     def values(self) -> dict_values[_KT, _VT]: ...
@@ -1184,7 +1184,7 @@ class set(MutableSet[_T]):
     def __iand__(self, value: AbstractSet[object], /) -> Self: ...
     def __or__(self, value: AbstractSet[_S], /) -> set[_T | _S]: ...
     def __ior__(self, value: AbstractSet[_T], /) -> Self: ...  # type: ignore[override,misc]
-    def __sub__(self, value: AbstractSet[_T | None], /) -> set[_T]: ...
+    def __sub__(self, value: AbstractSet[object], /) -> set[_T]: ...
     def __isub__(self, value: AbstractSet[object], /) -> Self: ...
     def __xor__(self, value: AbstractSet[_S], /) -> set[_T | _S]: ...
     def __ixor__(self, value: AbstractSet[_T], /) -> Self: ...  # type: ignore[override,misc]
@@ -1215,7 +1215,7 @@ class frozenset(AbstractSet[_T_co]):
     def __iter__(self) -> Iterator[_T_co]: ...
     def __and__(self, value: AbstractSet[_T_co], /) -> frozenset[_T_co]: ...
     def __or__(self, value: AbstractSet[_S], /) -> frozenset[_T_co | _S]: ...
-    def __sub__(self, value: AbstractSet[_T_co], /) -> frozenset[_T_co]: ...
+    def __sub__(self, value: AbstractSet[object], /) -> frozenset[_T_co]: ...
     def __xor__(self, value: AbstractSet[_S], /) -> frozenset[_T_co | _S]: ...
     def __le__(self, value: AbstractSet[object], /) -> bool: ...
     def __lt__(self, value: AbstractSet[object], /) -> bool: ...
diff --git a/mypy/typeshed/stdlib/cmath.pyi b/mypy/typeshed/stdlib/cmath.pyi
index aed4c63862fe..fdf8ae7bfed8 100644
--- a/mypy/typeshed/stdlib/cmath.pyi
+++ b/mypy/typeshed/stdlib/cmath.pyi
@@ -9,6 +9,7 @@ nan: Final[float]
 nanj: Final[complex]
 tau: Final[float]
 
+_F: TypeAlias = SupportsFloat | SupportsIndex
 _C: TypeAlias = SupportsFloat | SupportsComplex | SupportsIndex | complex
 
 def acos(z: _C, /) -> complex: ...
@@ -27,7 +28,7 @@ def log(z: _C, base: _C = ..., /) -> complex: ...
 def log10(z: _C, /) -> complex: ...
 def phase(z: _C, /) -> float: ...
 def polar(z: _C, /) -> tuple[float, float]: ...
-def rect(r: float, phi: float, /) -> complex: ...
+def rect(r: _F, phi: _F, /) -> complex: ...
 def sin(z: _C, /) -> complex: ...
 def sinh(z: _C, /) -> complex: ...
 def sqrt(z: _C, /) -> complex: ...
diff --git a/mypy/typeshed/stdlib/ctypes/__init__.pyi b/mypy/typeshed/stdlib/ctypes/__init__.pyi
index be2e7449ef31..8d048aa97e7d 100644
--- a/mypy/typeshed/stdlib/ctypes/__init__.pyi
+++ b/mypy/typeshed/stdlib/ctypes/__init__.pyi
@@ -169,11 +169,12 @@ def create_unicode_buffer(init: int | str, size: int | None = None) -> Array[c_w
 if sys.version_info >= (3, 13):
     @deprecated("Deprecated since Python 3.13; will be removed in Python 3.15.")
     def SetPointerType(pointer: type[_Pointer[Any]], cls: _CTypeBaseType) -> None: ...
+    @deprecated("Soft deprecated since Python 3.13. Use multiplication instead.")
+    def ARRAY(typ: _CT, len: int) -> Array[_CT]: ...
 
 else:
     def SetPointerType(pointer: type[_Pointer[Any]], cls: _CTypeBaseType) -> None: ...
-
-def ARRAY(typ: _CT, len: int) -> Array[_CT]: ...  # Soft Deprecated, no plans to remove
+    def ARRAY(typ: _CT, len: int) -> Array[_CT]: ...
 
 if sys.platform == "win32":
     def DllCanUnloadNow() -> int: ...
diff --git a/mypy/typeshed/stdlib/dis.pyi b/mypy/typeshed/stdlib/dis.pyi
index 896b50fa9384..52794a588ca8 100644
--- a/mypy/typeshed/stdlib/dis.pyi
+++ b/mypy/typeshed/stdlib/dis.pyi
@@ -2,8 +2,8 @@ import sys
 import types
 from collections.abc import Callable, Iterator
 from opcode import *  # `dis` re-exports it as a part of public API
-from typing import IO, Any, Final, NamedTuple
-from typing_extensions import Self, TypeAlias, disjoint_base
+from typing import IO, Any, Final, NamedTuple, overload
+from typing_extensions import Self, TypeAlias, deprecated, disjoint_base
 
 __all__ = [
     "code_info",
@@ -277,7 +277,14 @@ else:
     def distb(tb: types.TracebackType | None = None, *, file: IO[str] | None = None) -> None: ...
 
 if sys.version_info >= (3, 13):
-    # 3.13 made `show_cache` `None` by default
+    # 3.13 made `show_caches` `None` by default and has no effect
+    @overload
+    def get_instructions(x: _HaveCodeType, *, first_line: int | None = None, adaptive: bool = False) -> Iterator[Instruction]: ...
+    @overload
+    @deprecated(
+        "The `show_caches` parameter is deprecated since Python 3.13. "
+        "The iterator generates the `Instruction` instances with the `cache_info` field populated."
+    )
     def get_instructions(
         x: _HaveCodeType, *, first_line: int | None = None, show_caches: bool | None = None, adaptive: bool = False
     ) -> Iterator[Instruction]: ...
diff --git a/mypy/typeshed/stdlib/email/utils.pyi b/mypy/typeshed/stdlib/email/utils.pyi
index efc32a7abce2..cece2f2a1119 100644
--- a/mypy/typeshed/stdlib/email/utils.pyi
+++ b/mypy/typeshed/stdlib/email/utils.pyi
@@ -44,16 +44,7 @@ def parsedate(data: str) -> tuple[int, int, int, int, int, int, int, int, int] |
 def parsedate_tz(data: None) -> None: ...
 @overload
 def parsedate_tz(data: str) -> _PDTZ | None: ...
-
-if sys.version_info >= (3, 10):
-    @overload
-    def parsedate_to_datetime(data: None) -> None: ...
-    @overload
-    def parsedate_to_datetime(data: str) -> datetime.datetime: ...
-
-else:
-    def parsedate_to_datetime(data: str) -> datetime.datetime: ...
-
+def parsedate_to_datetime(data: str) -> datetime.datetime: ...
 def mktime_tz(data: _PDTZ) -> int: ...
 def formatdate(timeval: float | None = None, localtime: bool = False, usegmt: bool = False) -> str: ...
 def format_datetime(dt: datetime.datetime, usegmt: bool = False) -> str: ...
diff --git a/mypy/typeshed/stdlib/faulthandler.pyi b/mypy/typeshed/stdlib/faulthandler.pyi
index 33d08995eb75..17d4eef69af7 100644
--- a/mypy/typeshed/stdlib/faulthandler.pyi
+++ b/mypy/typeshed/stdlib/faulthandler.pyi
@@ -3,21 +3,23 @@ from _typeshed import FileDescriptorLike
 
 def cancel_dump_traceback_later() -> None: ...
 def disable() -> None: ...
-def dump_traceback(file: FileDescriptorLike = ..., all_threads: bool = ...) -> None: ...
+def dump_traceback(file: FileDescriptorLike = sys.stderr, all_threads: bool = True) -> None: ...
 
 if sys.version_info >= (3, 14):
-    def dump_c_stack(file: FileDescriptorLike = ...) -> None: ...
+    def dump_c_stack(file: FileDescriptorLike = sys.stderr) -> None: ...
 
-def dump_traceback_later(timeout: float, repeat: bool = ..., file: FileDescriptorLike = ..., exit: bool = ...) -> None: ...
+def dump_traceback_later(
+    timeout: float, repeat: bool = False, file: FileDescriptorLike = sys.stderr, exit: bool = False
+) -> None: ...
 
 if sys.version_info >= (3, 14):
-    def enable(file: FileDescriptorLike = ..., all_threads: bool = ..., c_stack: bool = True) -> None: ...
+    def enable(file: FileDescriptorLike = sys.stderr, all_threads: bool = True, c_stack: bool = True) -> None: ...
 
 else:
-    def enable(file: FileDescriptorLike = ..., all_threads: bool = ...) -> None: ...
+    def enable(file: FileDescriptorLike = sys.stderr, all_threads: bool = True) -> None: ...
 
 def is_enabled() -> bool: ...
 
 if sys.platform != "win32":
-    def register(signum: int, file: FileDescriptorLike = ..., all_threads: bool = ..., chain: bool = ...) -> None: ...
+    def register(signum: int, file: FileDescriptorLike = sys.stderr, all_threads: bool = True, chain: bool = False) -> None: ...
     def unregister(signum: int, /) -> None: ...
diff --git a/mypy/typeshed/stdlib/fileinput.pyi b/mypy/typeshed/stdlib/fileinput.pyi
index eb942bc55177..95164de2f010 100644
--- a/mypy/typeshed/stdlib/fileinput.pyi
+++ b/mypy/typeshed/stdlib/fileinput.pyi
@@ -3,7 +3,7 @@ from _typeshed import AnyStr_co, StrOrBytesPath
 from collections.abc import Callable, Iterable, Iterator
 from types import GenericAlias, TracebackType
 from typing import IO, Any, AnyStr, Literal, Protocol, overload, type_check_only
-from typing_extensions import Self, TypeAlias
+from typing_extensions import Self, TypeAlias, deprecated
 
 __all__ = [
     "input",
@@ -207,4 +207,9 @@ if sys.version_info >= (3, 10):
 else:
     def hook_compressed(filename: StrOrBytesPath, mode: str) -> IO[Any]: ...
 
-def hook_encoded(encoding: str, errors: str | None = None) -> Callable[[StrOrBytesPath, str], IO[Any]]: ...
+if sys.version_info >= (3, 10):
+    @deprecated("Deprecated since Python 3.10. Use `fileinput.input` or `fileinput.FileInput` instead.")
+    def hook_encoded(encoding: str, errors: str | None = None) -> Callable[[StrOrBytesPath, str], IO[Any]]: ...
+
+else:
+    def hook_encoded(encoding: str, errors: str | None = None) -> Callable[[StrOrBytesPath, str], IO[Any]]: ...
diff --git a/mypy/typeshed/stdlib/ftplib.pyi b/mypy/typeshed/stdlib/ftplib.pyi
index 44bc2165fe0e..73eaa8a34e57 100644
--- a/mypy/typeshed/stdlib/ftplib.pyi
+++ b/mypy/typeshed/stdlib/ftplib.pyi
@@ -1,11 +1,11 @@
 import sys
-from _typeshed import SupportsRead, SupportsReadline
+from _typeshed import StrOrBytesPath, SupportsRead, SupportsReadline
 from collections.abc import Callable, Iterable, Iterator
 from socket import socket
 from ssl import SSLContext
 from types import TracebackType
-from typing import Any, Final, Literal, TextIO
-from typing_extensions import Self
+from typing import Any, Final, Literal, TextIO, overload
+from typing_extensions import Self, deprecated
 
 __all__ = ["FTP", "error_reply", "error_temp", "error_perm", "error_proto", "all_errors", "FTP_TLS"]
 
@@ -120,23 +120,43 @@ class FTP_TLS(FTP):
             encoding: str = "utf-8",
         ) -> None: ...
     else:
+        @overload
         def __init__(
             self,
             host: str = "",
             user: str = "",
             passwd: str = "",
             acct: str = "",
-            keyfile: str | None = None,
-            certfile: str | None = None,
+            keyfile: None = None,
+            certfile: None = None,
             context: SSLContext | None = None,
             timeout: float | None = ...,
             source_address: tuple[str, int] | None = None,
             *,
             encoding: str = "utf-8",
         ) -> None: ...
-    ssl_version: int
-    keyfile: str | None
-    certfile: str | None
+        @overload
+        @deprecated(
+            "The `keyfile`, `certfile` parameters are deprecated since Python 3.6; "
+            "removed in Python 3.12. Use `context` parameter instead."
+        )
+        def __init__(
+            self,
+            host: str = "",
+            user: str = "",
+            passwd: str = "",
+            acct: str = "",
+            keyfile: StrOrBytesPath | None = None,
+            certfile: StrOrBytesPath | None = None,
+            context: None = None,
+            timeout: float | None = ...,
+            source_address: tuple[str, int] | None = None,
+            *,
+            encoding: str = "utf-8",
+        ) -> None: ...
+        ssl_version: int
+        keyfile: StrOrBytesPath | None
+        certfile: StrOrBytesPath | None
     context: SSLContext
     def login(self, user: str = "", passwd: str = "", acct: str = "", secure: bool = True) -> str: ...
     def auth(self) -> str: ...
diff --git a/mypy/typeshed/stdlib/functools.pyi b/mypy/typeshed/stdlib/functools.pyi
index 47baf917294d..52d0d0958134 100644
--- a/mypy/typeshed/stdlib/functools.pyi
+++ b/mypy/typeshed/stdlib/functools.pyi
@@ -54,14 +54,14 @@ class _CacheParameters(TypedDict):
     typed: bool
 
 @final
-class _lru_cache_wrapper(Generic[_T]):
-    __wrapped__: Callable[..., _T]
-    def __call__(self, *args: Hashable, **kwargs: Hashable) -> _T: ...
+class _lru_cache_wrapper(Generic[_T_co]):
+    __wrapped__: Callable[..., _T_co]
+    def __call__(self, *args: Hashable, **kwargs: Hashable) -> _T_co: ...
     def cache_info(self) -> _CacheInfo: ...
     def cache_clear(self) -> None: ...
     def cache_parameters(self) -> _CacheParameters: ...
-    def __copy__(self) -> _lru_cache_wrapper[_T]: ...
-    def __deepcopy__(self, memo: Any, /) -> _lru_cache_wrapper[_T]: ...
+    def __copy__(self) -> _lru_cache_wrapper[_T_co]: ...
+    def __deepcopy__(self, memo: Any, /) -> _lru_cache_wrapper[_T_co]: ...
 
 @overload
 def lru_cache(maxsize: int | None = 128, typed: bool = False) -> Callable[[Callable[..., _T]], _lru_cache_wrapper[_T]]: ...
diff --git a/mypy/typeshed/stdlib/gc.pyi b/mypy/typeshed/stdlib/gc.pyi
index 06fb6b47c2d1..ec1ed2681c5c 100644
--- a/mypy/typeshed/stdlib/gc.pyi
+++ b/mypy/typeshed/stdlib/gc.pyi
@@ -30,4 +30,4 @@ def is_tracked(obj: Any, /) -> bool: ...
 def is_finalized(obj: Any, /) -> bool: ...
 def isenabled() -> bool: ...
 def set_debug(flags: int, /) -> None: ...
-def set_threshold(threshold0: int, threshold1: int = ..., threshold2: int = ..., /) -> None: ...
+def set_threshold(threshold0: int, threshold1: int = 0, threshold2: int = 0, /) -> None: ...
diff --git a/mypy/typeshed/stdlib/hashlib.pyi b/mypy/typeshed/stdlib/hashlib.pyi
index 924136301b21..1763c2318273 100644
--- a/mypy/typeshed/stdlib/hashlib.pyi
+++ b/mypy/typeshed/stdlib/hashlib.pyi
@@ -66,7 +66,7 @@ else:
         "pbkdf2_hmac",
     )
 
-def new(name: str, data: ReadableBuffer = b"", *, usedforsecurity: bool = ...) -> HASH: ...
+def new(name: str, data: ReadableBuffer = b"", *, usedforsecurity: bool = True) -> HASH: ...
 
 algorithms_guaranteed: AbstractSet[str]
 algorithms_available: AbstractSet[str]
diff --git a/mypy/typeshed/stdlib/http/client.pyi b/mypy/typeshed/stdlib/http/client.pyi
index 1568567d5854..699ef0e4c6d6 100644
--- a/mypy/typeshed/stdlib/http/client.pyi
+++ b/mypy/typeshed/stdlib/http/client.pyi
@@ -3,12 +3,12 @@ import io
 import ssl
 import sys
 import types
-from _typeshed import MaybeNone, ReadableBuffer, SupportsRead, SupportsReadline, WriteableBuffer
+from _typeshed import MaybeNone, ReadableBuffer, StrOrBytesPath, SupportsRead, SupportsReadline, WriteableBuffer
 from collections.abc import Callable, Iterable, Iterator, Mapping
 from email._policybase import _MessageT
 from socket import socket
 from typing import BinaryIO, Final, TypeVar, overload
-from typing_extensions import Self, TypeAlias
+from typing_extensions import Self, TypeAlias, deprecated
 
 __all__ = [
     "HTTPResponse",
@@ -160,8 +160,11 @@ class HTTPResponse(io.BufferedIOBase, BinaryIO):  # type: ignore[misc]  # incomp
     def __exit__(
         self, exc_type: type[BaseException] | None, exc_val: BaseException | None, exc_tb: types.TracebackType | None
     ) -> None: ...
-    def info(self) -> email.message.Message: ...
+    @deprecated("Deprecated since Python 3.9. Use `HTTPResponse.headers` attribute instead.")
+    def info(self) -> HTTPMessage: ...
+    @deprecated("Deprecated since Python 3.9. Use `HTTPResponse.url` attribute instead.")
     def geturl(self) -> str: ...
+    @deprecated("Deprecated since Python 3.9. Use `HTTPResponse.status` attribute instead.")
     def getcode(self) -> int: ...
     def begin(self) -> None: ...
 
@@ -220,12 +223,31 @@ class HTTPSConnection(HTTPConnection):
             blocksize: int = 8192,
         ) -> None: ...
     else:
+        @overload
         def __init__(
             self,
             host: str,
             port: int | None = None,
-            key_file: str | None = None,
-            cert_file: str | None = None,
+            key_file: None = None,
+            cert_file: None = None,
+            timeout: float | None = ...,
+            source_address: tuple[str, int] | None = None,
+            *,
+            context: ssl.SSLContext | None = None,
+            check_hostname: None = None,
+            blocksize: int = 8192,
+        ) -> None: ...
+        @overload
+        @deprecated(
+            "The `key_file`, `cert_file`, `check_hostname` parameters are deprecated since Python 3.6; "
+            "removed in Python 3.12. Use `context` parameter instead."
+        )
+        def __init__(
+            self,
+            host: str,
+            port: int | None = None,
+            key_file: StrOrBytesPath | None = None,
+            cert_file: StrOrBytesPath | None = None,
             timeout: float | None = ...,
             source_address: tuple[str, int] | None = None,
             *,
@@ -233,6 +255,8 @@ class HTTPSConnection(HTTPConnection):
             check_hostname: bool | None = None,
             blocksize: int = 8192,
         ) -> None: ...
+        key_file: StrOrBytesPath | None
+        cert_file: StrOrBytesPath | None
 
 class HTTPException(Exception): ...
 
diff --git a/mypy/typeshed/stdlib/http/cookies.pyi b/mypy/typeshed/stdlib/http/cookies.pyi
index 4df12e3125d4..0373eae8ab29 100644
--- a/mypy/typeshed/stdlib/http/cookies.pyi
+++ b/mypy/typeshed/stdlib/http/cookies.pyi
@@ -1,3 +1,4 @@
+from _typeshed import MaybeNone
 from collections.abc import Iterable, Mapping
 from types import GenericAlias
 from typing import Any, Generic, TypeVar, overload
@@ -21,11 +22,11 @@ class CookieError(Exception): ...
 
 class Morsel(dict[str, Any], Generic[_T]):
     @property
-    def value(self) -> str: ...
+    def value(self) -> str | MaybeNone: ...
     @property
-    def coded_value(self) -> _T: ...
+    def coded_value(self) -> _T | MaybeNone: ...
     @property
-    def key(self) -> str: ...
+    def key(self) -> str | MaybeNone: ...
     def __init__(self) -> None: ...
     def set(self, key: str, val: str, coded_val: _T) -> None: ...
     def setdefault(self, key: str, val: str | None = None) -> str: ...
diff --git a/mypy/typeshed/stdlib/imaplib.pyi b/mypy/typeshed/stdlib/imaplib.pyi
index 1f0e0106006b..94b96f0a1283 100644
--- a/mypy/typeshed/stdlib/imaplib.pyi
+++ b/mypy/typeshed/stdlib/imaplib.pyi
@@ -1,7 +1,7 @@
 import subprocess
 import sys
 import time
-from _typeshed import ReadableBuffer, SizedBuffer, Unused
+from _typeshed import ReadableBuffer, SizedBuffer, StrOrBytesPath, Unused
 from builtins import list as _list  # conflicts with a method named "list"
 from collections.abc import Callable, Generator
 from datetime import datetime
@@ -9,7 +9,7 @@ from re import Pattern
 from socket import socket as _socket
 from ssl import SSLContext, SSLSocket
 from types import TracebackType
-from typing import IO, Any, Literal, SupportsAbs, SupportsInt
+from typing import IO, Any, Literal, SupportsAbs, SupportsInt, overload
 from typing_extensions import Self, TypeAlias, deprecated
 
 __all__ = ["IMAP4", "IMAP4_stream", "Internaldate2tuple", "Int2AP", "ParseFlags", "Time2Internaldate", "IMAP4_SSL"]
@@ -61,7 +61,9 @@ class IMAP4:
     def socket(self) -> _socket: ...
     def recent(self) -> _CommandResults: ...
     def response(self, code: str) -> _CommandResults: ...
-    def append(self, mailbox: str, flags: str, date_time: str, message: ReadableBuffer) -> tuple[str, _list[bytes]]: ...
+    def append(
+        self, mailbox: str | None, flags: str | None, date_time: _TimeLike | None, message: ReadableBuffer
+    ) -> tuple[str, _list[bytes]]: ...
     def authenticate(self, mechanism: str, authobject: Callable[[bytes], bytes | None]) -> tuple[str, str]: ...
     def capability(self) -> _CommandResults: ...
     def check(self) -> _CommandResults: ...
@@ -120,23 +122,37 @@ if sys.version_info >= (3, 14):
         def burst(self, interval: float = 0.1) -> Generator[tuple[str, float | None]]: ...
 
 class IMAP4_SSL(IMAP4):
-    if sys.version_info < (3, 12):
-        keyfile: str
-        certfile: str
     if sys.version_info >= (3, 12):
         def __init__(
             self, host: str = "", port: int = 993, *, ssl_context: SSLContext | None = None, timeout: float | None = None
         ) -> None: ...
     else:
+        @overload
         def __init__(
             self,
             host: str = "",
             port: int = 993,
-            keyfile: str | None = None,
-            certfile: str | None = None,
+            keyfile: None = None,
+            certfile: None = None,
             ssl_context: SSLContext | None = None,
             timeout: float | None = None,
         ) -> None: ...
+        @overload
+        @deprecated(
+            "The `keyfile`, `certfile` parameters are deprecated since Python 3.6; "
+            "removed in Python 3.12. Use `ssl_context` parameter instead."
+        )
+        def __init__(
+            self,
+            host: str = "",
+            port: int = 993,
+            keyfile: StrOrBytesPath | None = None,
+            certfile: StrOrBytesPath | None = None,
+            ssl_context: None = None,
+            timeout: float | None = None,
+        ) -> None: ...
+        keyfile: StrOrBytesPath | None
+        certfile: StrOrBytesPath | None
     sslobj: SSLSocket
     if sys.version_info >= (3, 14):
         @property
@@ -172,4 +188,7 @@ class _Authenticator:
 def Internaldate2tuple(resp: ReadableBuffer) -> time.struct_time | None: ...
 def Int2AP(num: SupportsAbs[SupportsInt]) -> bytes: ...
 def ParseFlags(resp: ReadableBuffer) -> tuple[bytes, ...]: ...
-def Time2Internaldate(date_time: float | time.struct_time | time._TimeTuple | datetime | str) -> str: ...
+
+_TimeLike: TypeAlias = float | time.struct_time | time._TimeTuple | datetime | str
+
+def Time2Internaldate(date_time: _TimeLike) -> str: ...
diff --git a/mypy/typeshed/stdlib/importlib/resources/abc.pyi b/mypy/typeshed/stdlib/importlib/resources/abc.pyi
index 9be594a7dc2f..477339ea7429 100644
--- a/mypy/typeshed/stdlib/importlib/resources/abc.pyi
+++ b/mypy/typeshed/stdlib/importlib/resources/abc.pyi
@@ -4,8 +4,10 @@ from abc import ABCMeta, abstractmethod
 from collections.abc import Iterator
 from io import BufferedReader
 from typing import IO, Any, Literal, Protocol, overload, runtime_checkable
+from typing_extensions import deprecated
 
 if sys.version_info >= (3, 11):
+    @deprecated("Deprecated since Python 3.12. Use `importlib.resources.abc.TraversableResources` instead.")
     class ResourceReader(metaclass=ABCMeta):
         @abstractmethod
         def open_resource(self, resource: str) -> IO[bytes]: ...
diff --git a/mypy/typeshed/stdlib/inspect.pyi b/mypy/typeshed/stdlib/inspect.pyi
index 55ae61617af7..c48d63bc4f32 100644
--- a/mypy/typeshed/stdlib/inspect.pyi
+++ b/mypy/typeshed/stdlib/inspect.pyi
@@ -547,6 +547,7 @@ def formatargvalues(
     formatvalue: Callable[[Any], str] | None = ...,
 ) -> str: ...
 def getmro(cls: type) -> tuple[type, ...]: ...
+@deprecated("Deprecated since Python 3.5. Use `Signature.bind` and `Signature.bind_partial` instead.")
 def getcallargs(func: Callable[_P, Any], /, *args: _P.args, **kwds: _P.kwargs) -> dict[str, Any]: ...
 
 class ClosureVars(NamedTuple):
diff --git a/mypy/typeshed/stdlib/itertools.pyi b/mypy/typeshed/stdlib/itertools.pyi
index 73745fe92d9e..5c2bf7f83bba 100644
--- a/mypy/typeshed/stdlib/itertools.pyi
+++ b/mypy/typeshed/stdlib/itertools.pyi
@@ -32,7 +32,7 @@ class count(Iterator[_N]):
     @overload
     def __new__(cls) -> count[int]: ...
     @overload
-    def __new__(cls, start: _N, step: _Step = ...) -> count[_N]: ...
+    def __new__(cls, start: _N, step: _Step = 1) -> count[_N]: ...
     @overload
     def __new__(cls, *, step: _N) -> count[_N]: ...
     def __next__(self) -> _N: ...
@@ -57,9 +57,9 @@ class repeat(Iterator[_T]):
 @disjoint_base
 class accumulate(Iterator[_T]):
     @overload
-    def __new__(cls, iterable: Iterable[_T], func: None = None, *, initial: _T | None = ...) -> Self: ...
+    def __new__(cls, iterable: Iterable[_T], func: None = None, *, initial: _T | None = None) -> Self: ...
     @overload
-    def __new__(cls, iterable: Iterable[_S], func: Callable[[_T, _S], _T], *, initial: _T | None = ...) -> Self: ...
+    def __new__(cls, iterable: Iterable[_S], func: Callable[[_T, _S], _T], *, initial: _T | None = None) -> Self: ...
     def __iter__(self) -> Self: ...
     def __next__(self) -> _T: ...
 
@@ -105,7 +105,7 @@ class islice(Iterator[_T]):
     @overload
     def __new__(cls, iterable: Iterable[_T], stop: int | None, /) -> Self: ...
     @overload
-    def __new__(cls, iterable: Iterable[_T], start: int | None, stop: int | None, step: int | None = ..., /) -> Self: ...
+    def __new__(cls, iterable: Iterable[_T], start: int | None, stop: int | None, step: int | None = 1, /) -> Self: ...
     def __iter__(self) -> Self: ...
     def __next__(self) -> _T: ...
 
@@ -126,7 +126,7 @@ def tee(iterable: Iterable[_T], n: int = 2, /) -> tuple[Iterator[_T], ...]: ...
 class zip_longest(Iterator[_T_co]):
     # one iterable (fillvalue doesn't matter)
     @overload
-    def __new__(cls, iter1: Iterable[_T1], /, *, fillvalue: object = ...) -> zip_longest[tuple[_T1]]: ...
+    def __new__(cls, iter1: Iterable[_T1], /, *, fillvalue: object = None) -> zip_longest[tuple[_T1]]: ...
     # two iterables
     @overload
     # In the overloads without fillvalue, all of the tuple members could theoretically be None,
@@ -298,7 +298,7 @@ class permutations(Iterator[_T_co]):
     @overload
     def __new__(cls, iterable: Iterable[_T], r: Literal[5]) -> permutations[tuple[_T, _T, _T, _T, _T]]: ...
     @overload
-    def __new__(cls, iterable: Iterable[_T], r: int | None = ...) -> permutations[tuple[_T, ...]]: ...
+    def __new__(cls, iterable: Iterable[_T], r: int | None = None) -> permutations[tuple[_T, ...]]: ...
     def __iter__(self) -> Self: ...
     def __next__(self) -> _T_co: ...
 
@@ -343,9 +343,24 @@ if sys.version_info >= (3, 12):
     @disjoint_base
     class batched(Iterator[tuple[_T_co, ...]], Generic[_T_co]):
         if sys.version_info >= (3, 13):
-            def __new__(cls, iterable: Iterable[_T_co], n: int, *, strict: bool = False) -> Self: ...
+            @overload
+            def __new__(cls, iterable: Iterable[_T], n: Literal[1], *, strict: Literal[True]) -> batched[tuple[_T]]: ...
+            @overload
+            def __new__(cls, iterable: Iterable[_T], n: Literal[2], *, strict: Literal[True]) -> batched[tuple[_T, _T]]: ...
+            @overload
+            def __new__(cls, iterable: Iterable[_T], n: Literal[3], *, strict: Literal[True]) -> batched[tuple[_T, _T, _T]]: ...
+            @overload
+            def __new__(
+                cls, iterable: Iterable[_T], n: Literal[4], *, strict: Literal[True]
+            ) -> batched[tuple[_T, _T, _T, _T]]: ...
+            @overload
+            def __new__(
+                cls, iterable: Iterable[_T], n: Literal[5], *, strict: Literal[True]
+            ) -> batched[tuple[_T, _T, _T, _T, _T]]: ...
+            @overload
+            def __new__(cls, iterable: Iterable[_T], n: int, *, strict: bool = False) -> batched[tuple[_T, ...]]: ...
         else:
-            def __new__(cls, iterable: Iterable[_T_co], n: int) -> Self: ...
+            def __new__(cls, iterable: Iterable[_T], n: int) -> batched[tuple[_T, ...]]: ...
 
         def __iter__(self) -> Self: ...
-        def __next__(self) -> tuple[_T_co, ...]: ...
+        def __next__(self) -> _T_co: ...
diff --git a/mypy/typeshed/stdlib/multiprocessing/reduction.pyi b/mypy/typeshed/stdlib/multiprocessing/reduction.pyi
index 490ae195c20e..ddc676efccc3 100644
--- a/mypy/typeshed/stdlib/multiprocessing/reduction.pyi
+++ b/mypy/typeshed/stdlib/multiprocessing/reduction.pyi
@@ -1,6 +1,6 @@
 import pickle
 import sys
-from _pickle import _ReducedType
+from _pickle import _BufferCallback, _ReducedType
 from _typeshed import HasFileno, SupportsWrite, Unused
 from abc import ABCMeta
 from builtins import type as Type  # alias to avoid name clash
@@ -19,7 +19,14 @@ HAVE_SEND_HANDLE: Final[bool]
 
 class ForkingPickler(pickle.Pickler):
     dispatch_table: _DispatchTableType
-    def __init__(self, file: SupportsWrite[bytes], protocol: int | None = ...) -> None: ...
+    def __init__(
+        self,
+        file: SupportsWrite[bytes],
+        protocol: int | None = None,
+        fix_imports: bool = True,
+        buffer_callback: _BufferCallback = None,
+        /,
+    ) -> None: ...
     @classmethod
     def register(cls, type: Type, reduce: Callable[[Any], _ReducedType]) -> None: ...
     @classmethod
diff --git a/mypy/typeshed/stdlib/os/__init__.pyi b/mypy/typeshed/stdlib/os/__init__.pyi
index 7801b91702ab..9e02fbf9e106 100644
--- a/mypy/typeshed/stdlib/os/__init__.pyi
+++ b/mypy/typeshed/stdlib/os/__init__.pyi
@@ -1037,10 +1037,10 @@ def fdopen(
     mode: OpenTextMode = "r",
     buffering: int = -1,
     encoding: str | None = None,
-    errors: str | None = ...,
-    newline: str | None = ...,
-    closefd: bool = ...,
-    opener: _Opener | None = ...,
+    errors: str | None = None,
+    newline: str | None = None,
+    closefd: bool = True,
+    opener: _Opener | None = None,
 ) -> TextIOWrapper: ...
 @overload
 def fdopen(
@@ -1050,8 +1050,8 @@ def fdopen(
     encoding: None = None,
     errors: None = None,
     newline: None = None,
-    closefd: bool = ...,
-    opener: _Opener | None = ...,
+    closefd: bool = True,
+    opener: _Opener | None = None,
 ) -> FileIO: ...
 @overload
 def fdopen(
@@ -1061,8 +1061,8 @@ def fdopen(
     encoding: None = None,
     errors: None = None,
     newline: None = None,
-    closefd: bool = ...,
-    opener: _Opener | None = ...,
+    closefd: bool = True,
+    opener: _Opener | None = None,
 ) -> BufferedRandom: ...
 @overload
 def fdopen(
@@ -1072,8 +1072,8 @@ def fdopen(
     encoding: None = None,
     errors: None = None,
     newline: None = None,
-    closefd: bool = ...,
-    opener: _Opener | None = ...,
+    closefd: bool = True,
+    opener: _Opener | None = None,
 ) -> BufferedWriter: ...
 @overload
 def fdopen(
@@ -1083,8 +1083,8 @@ def fdopen(
     encoding: None = None,
     errors: None = None,
     newline: None = None,
-    closefd: bool = ...,
-    opener: _Opener | None = ...,
+    closefd: bool = True,
+    opener: _Opener | None = None,
 ) -> BufferedReader: ...
 @overload
 def fdopen(
@@ -1094,8 +1094,8 @@ def fdopen(
     encoding: None = None,
     errors: None = None,
     newline: None = None,
-    closefd: bool = ...,
-    opener: _Opener | None = ...,
+    closefd: bool = True,
+    opener: _Opener | None = None,
 ) -> BinaryIO: ...
 @overload
 def fdopen(
@@ -1103,10 +1103,10 @@ def fdopen(
     mode: str,
     buffering: int = -1,
     encoding: str | None = None,
-    errors: str | None = ...,
-    newline: str | None = ...,
-    closefd: bool = ...,
-    opener: _Opener | None = ...,
+    errors: str | None = None,
+    newline: str | None = None,
+    closefd: bool = True,
+    opener: _Opener | None = None,
 ) -> IO[Any]: ...
 def close(fd: int) -> None: ...
 def closerange(fd_low: int, fd_high: int, /) -> None: ...
@@ -1538,13 +1538,13 @@ else:
             env: _ExecEnv | None,  # None allowed starting in 3.13
             /,
             *,
-            file_actions: Sequence[tuple[Any, ...]] | None = ...,
-            setpgroup: int | None = ...,
-            resetids: bool = ...,
-            setsid: bool = ...,
-            setsigmask: Iterable[int] = ...,
-            setsigdef: Iterable[int] = ...,
-            scheduler: tuple[Any, sched_param] | None = ...,
+            file_actions: Sequence[tuple[Any, ...]] | None = (),
+            setpgroup: int = ...,
+            resetids: bool = False,
+            setsid: bool = False,
+            setsigmask: Iterable[int] = (),
+            setsigdef: Iterable[int] = (),
+            scheduler: tuple[Any, sched_param] = ...,
         ) -> int: ...
         def posix_spawnp(
             path: StrOrBytesPath,
@@ -1552,13 +1552,13 @@ else:
             env: _ExecEnv | None,  # None allowed starting in 3.13
             /,
             *,
-            file_actions: Sequence[tuple[Any, ...]] | None = ...,
-            setpgroup: int | None = ...,
-            resetids: bool = ...,
-            setsid: bool = ...,
-            setsigmask: Iterable[int] = ...,
-            setsigdef: Iterable[int] = ...,
-            scheduler: tuple[Any, sched_param] | None = ...,
+            file_actions: Sequence[tuple[Any, ...]] | None = (),
+            setpgroup: int = ...,
+            resetids: bool = False,
+            setsid: bool = False,
+            setsigmask: Iterable[int] = (),
+            setsigdef: Iterable[int] = (),
+            scheduler: tuple[Any, sched_param] = ...,
         ) -> int: ...
     else:
         def posix_spawn(
@@ -1567,13 +1567,13 @@ else:
             env: _ExecEnv,
             /,
             *,
-            file_actions: Sequence[tuple[Any, ...]] | None = ...,
-            setpgroup: int | None = ...,
-            resetids: bool = ...,
-            setsid: bool = ...,
-            setsigmask: Iterable[int] = ...,
-            setsigdef: Iterable[int] = ...,
-            scheduler: tuple[Any, sched_param] | None = ...,
+            file_actions: Sequence[tuple[Any, ...]] | None = (),
+            setpgroup: int = ...,
+            resetids: bool = False,
+            setsid: bool = False,
+            setsigmask: Iterable[int] = (),
+            setsigdef: Iterable[int] = (),
+            scheduler: tuple[Any, sched_param] = ...,
         ) -> int: ...
         def posix_spawnp(
             path: StrOrBytesPath,
@@ -1581,13 +1581,13 @@ else:
             env: _ExecEnv,
             /,
             *,
-            file_actions: Sequence[tuple[Any, ...]] | None = ...,
-            setpgroup: int | None = ...,
-            resetids: bool = ...,
-            setsid: bool = ...,
-            setsigmask: Iterable[int] = ...,
-            setsigdef: Iterable[int] = ...,
-            scheduler: tuple[Any, sched_param] | None = ...,
+            file_actions: Sequence[tuple[Any, ...]] | None = (),
+            setpgroup: int = ...,
+            resetids: bool = False,
+            setsid: bool = False,
+            setsigmask: Iterable[int] = (),
+            setsigdef: Iterable[int] = (),
+            scheduler: tuple[Any, sched_param] = ...,
         ) -> int: ...
 
     POSIX_SPAWN_OPEN: Final = 0
@@ -1674,12 +1674,12 @@ if sys.platform == "linux":
     MFD_HUGE_2GB: Final[int]
     MFD_HUGE_16GB: Final[int]
     def memfd_create(name: str, flags: int = ...) -> int: ...
-    def copy_file_range(src: int, dst: int, count: int, offset_src: int | None = ..., offset_dst: int | None = ...) -> int: ...
+    def copy_file_range(src: int, dst: int, count: int, offset_src: int | None = None, offset_dst: int | None = None) -> int: ...
 
 def waitstatus_to_exitcode(status: int) -> int: ...
 
 if sys.platform == "linux":
-    def pidfd_open(pid: int, flags: int = ...) -> int: ...
+    def pidfd_open(pid: int, flags: int = 0) -> int: ...
 
 if sys.version_info >= (3, 12) and sys.platform == "linux":
     PIDFD_NONBLOCK: Final = 2048
@@ -1703,8 +1703,8 @@ if sys.version_info >= (3, 10) and sys.platform == "linux":
         src: FileDescriptor,
         dst: FileDescriptor,
         count: int,
-        offset_src: int | None = ...,
-        offset_dst: int | None = ...,
+        offset_src: int | None = None,
+        offset_dst: int | None = None,
         flags: int = 0,
     ) -> int: ...
 
diff --git a/mypy/typeshed/stdlib/pathlib/__init__.pyi b/mypy/typeshed/stdlib/pathlib/__init__.pyi
index 33652d922568..26dde2accd8d 100644
--- a/mypy/typeshed/stdlib/pathlib/__init__.pyi
+++ b/mypy/typeshed/stdlib/pathlib/__init__.pyi
@@ -104,6 +104,10 @@ class PurePath(PathLike[str]):
     if sys.version_info >= (3, 14):
         def is_relative_to(self, other: StrPath) -> bool: ...
     elif sys.version_info >= (3, 12):
+        @overload
+        def is_relative_to(self, other: StrPath, /) -> bool: ...
+        @overload
+        @deprecated("Passing additional arguments is deprecated since Python 3.12; removed in Python 3.14.")
         def is_relative_to(self, other: StrPath, /, *_deprecated: StrPath) -> bool: ...
     else:
         def is_relative_to(self, *other: StrPath) -> bool: ...
@@ -116,6 +120,10 @@ class PurePath(PathLike[str]):
     if sys.version_info >= (3, 14):
         def relative_to(self, other: StrPath, *, walk_up: bool = False) -> Self: ...
     elif sys.version_info >= (3, 12):
+        @overload
+        def relative_to(self, other: StrPath, /, *, walk_up: bool = False) -> Self: ...
+        @overload
+        @deprecated("Passing additional arguments is deprecated since Python 3.12; removed in Python 3.14.")
         def relative_to(self, other: StrPath, /, *_deprecated: StrPath, walk_up: bool = False) -> Self: ...
     else:
         def relative_to(self, *other: StrPath) -> Self: ...
diff --git a/mypy/typeshed/stdlib/poplib.pyi b/mypy/typeshed/stdlib/poplib.pyi
index 9ff2b764aeb6..f5669ec87e87 100644
--- a/mypy/typeshed/stdlib/poplib.pyi
+++ b/mypy/typeshed/stdlib/poplib.pyi
@@ -1,10 +1,11 @@
 import socket
 import ssl
 import sys
+from _typeshed import StrOrBytesPath
 from builtins import list as _list  # conflicts with a method named "list"
 from re import Pattern
 from typing import Any, BinaryIO, Final, NoReturn, overload
-from typing_extensions import TypeAlias
+from typing_extensions import TypeAlias, deprecated
 
 __all__ = ["POP3", "error_proto", "POP3_SSL"]
 
@@ -58,15 +59,32 @@ class POP3_SSL(POP3):
         ) -> None: ...
         def stls(self, context: Any = None) -> NoReturn: ...
     else:
+        @overload
         def __init__(
             self,
             host: str,
             port: int = 995,
-            keyfile: str | None = None,
-            certfile: str | None = None,
+            keyfile: None = None,
+            certfile: None = None,
             timeout: float = ...,
             context: ssl.SSLContext | None = None,
         ) -> None: ...
+        @overload
+        @deprecated(
+            "The `keyfile`, `certfile` parameters are deprecated since Python 3.6; "
+            "removed in Python 3.12. Use `context` parameter instead."
+        )
+        def __init__(
+            self,
+            host: str,
+            port: int = 995,
+            keyfile: StrOrBytesPath | None = None,
+            certfile: StrOrBytesPath | None = None,
+            timeout: float = ...,
+            context: None = None,
+        ) -> None: ...
+        keyfile: StrOrBytesPath | None
+        certfile: StrOrBytesPath | None
         # "context" is actually the last argument,
         # but that breaks LSP and it doesn't really matter because all the arguments are ignored
         def stls(self, context: Any = None, keyfile: Any = None, certfile: Any = None) -> NoReturn: ...
diff --git a/mypy/typeshed/stdlib/pstats.pyi b/mypy/typeshed/stdlib/pstats.pyi
index c4dee1f6b8f6..c1da2aea0fc5 100644
--- a/mypy/typeshed/stdlib/pstats.pyi
+++ b/mypy/typeshed/stdlib/pstats.pyi
@@ -61,7 +61,7 @@ class Stats:
     sort_arg_dict_default: _SortArgDict
     def __init__(
         self,
-        arg: None | str | Profile | _cProfile = ...,
+        arg: None | str | Profile | _cProfile = None,
         /,
         *args: None | str | Profile | _cProfile | Self,
         stream: IO[Any] | None = None,
diff --git a/mypy/typeshed/stdlib/pydoc.pyi b/mypy/typeshed/stdlib/pydoc.pyi
index 935f9420f88c..f8129ac20ade 100644
--- a/mypy/typeshed/stdlib/pydoc.pyi
+++ b/mypy/typeshed/stdlib/pydoc.pyi
@@ -5,7 +5,7 @@ from builtins import list as _list  # "list" conflicts with method name
 from collections.abc import Callable, Container, Mapping, MutableMapping
 from reprlib import Repr
 from types import MethodType, ModuleType, TracebackType
-from typing import IO, Any, AnyStr, Final, NoReturn, Protocol, TypeVar, type_check_only
+from typing import IO, Any, AnyStr, Final, NoReturn, Protocol, TypeVar, overload, type_check_only
 from typing_extensions import TypeGuard, deprecated
 
 __all__ = ["help"]
@@ -48,7 +48,14 @@ class ErrorDuringImport(Exception):
     exc: type[BaseException] | None
     value: BaseException | None
     tb: TracebackType | None
-    def __init__(self, filename: str, exc_info: OptExcInfo) -> None: ...
+    if sys.version_info >= (3, 12):
+        @overload
+        def __init__(self, filename: str, exc_info: BaseException) -> None: ...
+        @overload
+        @deprecated("A tuple value for `exc_info` parameter is deprecated since Python 3.12. Use an exception instance.")
+        def __init__(self, filename: str, exc_info: OptExcInfo) -> None: ...
+    else:
+        def __init__(self, filename: str, exc_info: OptExcInfo) -> None: ...
 
 def importfile(path: str) -> ModuleType: ...
 def safeimport(path: str, forceload: bool = ..., cache: MutableMapping[str, ModuleType] = {}) -> ModuleType | None: ...
diff --git a/mypy/typeshed/stdlib/random.pyi b/mypy/typeshed/stdlib/random.pyi
index a797794b8050..08619bf66351 100644
--- a/mypy/typeshed/stdlib/random.pyi
+++ b/mypy/typeshed/stdlib/random.pyi
@@ -3,8 +3,8 @@ import sys
 from _typeshed import SupportsLenAndGetItem
 from collections.abc import Callable, Iterable, MutableSequence, Sequence, Set as AbstractSet
 from fractions import Fraction
-from typing import Any, ClassVar, NoReturn, TypeVar
-from typing_extensions import Self
+from typing import Any, ClassVar, NoReturn, TypeVar, overload
+from typing_extensions import Self, deprecated
 
 __all__ = [
     "Random",
@@ -67,6 +67,10 @@ class Random(_random.Random):
     if sys.version_info >= (3, 11):
         def shuffle(self, x: MutableSequence[Any]) -> None: ...
     else:
+        @overload
+        def shuffle(self, x: MutableSequence[Any]) -> None: ...
+        @overload
+        @deprecated("The `random` parameter is deprecated since Python 3.9; removed in Python 3.11.")
         def shuffle(self, x: MutableSequence[Any], random: Callable[[], float] | None = None) -> None: ...
     if sys.version_info >= (3, 11):
         def sample(self, population: Sequence[_T], k: int, *, counts: Iterable[int] | None = None) -> list[_T]: ...
diff --git a/mypy/typeshed/stdlib/sched.pyi b/mypy/typeshed/stdlib/sched.pyi
index 52f87ab68ff5..436d9984ee4d 100644
--- a/mypy/typeshed/stdlib/sched.pyi
+++ b/mypy/typeshed/stdlib/sched.pyi
@@ -1,4 +1,5 @@
 import sys
+import time
 from collections.abc import Callable
 from typing import Any, ClassVar, NamedTuple, type_check_only
 from typing_extensions import TypeAlias
@@ -32,7 +33,9 @@ class scheduler:
     timefunc: Callable[[], float]
     delayfunc: Callable[[float], object]
 
-    def __init__(self, timefunc: Callable[[], float] = ..., delayfunc: Callable[[float], object] = ...) -> None: ...
+    def __init__(
+        self, timefunc: Callable[[], float] = time.monotonic, delayfunc: Callable[[float], object] = time.sleep
+    ) -> None: ...
     def enterabs(
         self, time: float, priority: Any, action: _ActionCallback, argument: tuple[Any, ...] = (), kwargs: dict[str, Any] = ...
     ) -> Event: ...
diff --git a/mypy/typeshed/stdlib/secrets.pyi b/mypy/typeshed/stdlib/secrets.pyi
index 4861b6f09340..76479af97a07 100644
--- a/mypy/typeshed/stdlib/secrets.pyi
+++ b/mypy/typeshed/stdlib/secrets.pyi
@@ -1,12 +1,14 @@
 from _typeshed import SupportsLenAndGetItem
 from hmac import compare_digest as compare_digest
 from random import SystemRandom as SystemRandom
-from typing import TypeVar
+from typing import Final, TypeVar
 
 __all__ = ["choice", "randbelow", "randbits", "SystemRandom", "token_bytes", "token_hex", "token_urlsafe", "compare_digest"]
 
 _T = TypeVar("_T")
 
+DEFAULT_ENTROPY: Final[int]
+
 def randbelow(exclusive_upper_bound: int) -> int: ...
 def randbits(k: int) -> int: ...
 def choice(seq: SupportsLenAndGetItem[_T]) -> _T: ...
diff --git a/mypy/typeshed/stdlib/select.pyi b/mypy/typeshed/stdlib/select.pyi
index 43a9e4274b23..d2b1d6d676e5 100644
--- a/mypy/typeshed/stdlib/select.pyi
+++ b/mypy/typeshed/stdlib/select.pyi
@@ -2,8 +2,8 @@ import sys
 from _typeshed import FileDescriptorLike
 from collections.abc import Iterable
 from types import TracebackType
-from typing import Any, ClassVar, Final, TypeVar, final
-from typing_extensions import Never, Self
+from typing import Any, ClassVar, Final, TypeVar, final, overload
+from typing_extensions import Never, Self, deprecated
 
 if sys.platform != "win32":
     PIPE_BUF: Final[int]
@@ -52,13 +52,7 @@ if sys.platform != "linux" and sys.platform != "win32":
         ident: int
         udata: Any
         def __init__(
-            self,
-            ident: FileDescriptorLike,
-            filter: int = ...,
-            flags: int = ...,
-            fflags: int = ...,
-            data: Any = ...,
-            udata: Any = ...,
+            self, ident: FileDescriptorLike, filter: int = ..., flags: int = ..., fflags: int = 0, data: Any = 0, udata: Any = 0
         ) -> None: ...
         __hash__: ClassVar[None]  # type: ignore[assignment]
 
@@ -118,12 +112,19 @@ if sys.platform != "linux" and sys.platform != "win32":
 if sys.platform == "linux":
     @final
     class epoll:
-        def __new__(self, sizehint: int = ..., flags: int = ...) -> Self: ...
+        @overload
+        def __new__(self, sizehint: int = -1) -> Self: ...
+        @overload
+        @deprecated(
+            "The `flags` parameter is deprecated since Python 3.4. "
+            "Use `os.set_inheritable()` to make the file descriptor inheritable."
+        )
+        def __new__(self, sizehint: int = -1, flags: int = 0) -> Self: ...
         def __enter__(self) -> Self: ...
         def __exit__(
             self,
             exc_type: type[BaseException] | None = None,
-            exc_value: BaseException | None = ...,
+            exc_value: BaseException | None = None,
             exc_tb: TracebackType | None = None,
             /,
         ) -> None: ...
@@ -164,4 +165,4 @@ if sys.platform != "linux" and sys.platform != "darwin" and sys.platform != "win
         def register(self, fd: FileDescriptorLike, eventmask: int = ...) -> None: ...
         def modify(self, fd: FileDescriptorLike, eventmask: int = ...) -> None: ...
         def unregister(self, fd: FileDescriptorLike) -> None: ...
-        def poll(self, timeout: float | None = ...) -> list[tuple[int, int]]: ...
+        def poll(self, timeout: float | None = None) -> list[tuple[int, int]]: ...
diff --git a/mypy/typeshed/stdlib/smtplib.pyi b/mypy/typeshed/stdlib/smtplib.pyi
index 6a8467689367..74b5ea2cb6fc 100644
--- a/mypy/typeshed/stdlib/smtplib.pyi
+++ b/mypy/typeshed/stdlib/smtplib.pyi
@@ -1,6 +1,6 @@
 import sys
 from _socket import _Address as _SourceAddress
-from _typeshed import ReadableBuffer, SizedBuffer
+from _typeshed import ReadableBuffer, SizedBuffer, StrOrBytesPath
 from collections.abc import Sequence
 from email.message import Message as _Message
 from re import Pattern
@@ -8,7 +8,7 @@ from socket import socket
 from ssl import SSLContext
 from types import TracebackType
 from typing import Any, Final, Protocol, overload, type_check_only
-from typing_extensions import Self, TypeAlias
+from typing_extensions import Self, TypeAlias, deprecated
 
 __all__ = [
     "SMTPException",
@@ -131,8 +131,15 @@ class SMTP:
     if sys.version_info >= (3, 12):
         def starttls(self, *, context: SSLContext | None = None) -> _Reply: ...
     else:
+        @overload
+        def starttls(self, keyfile: None = None, certfile: None = None, context: SSLContext | None = None) -> _Reply: ...
+        @overload
+        @deprecated(
+            "The `keyfile`, `certfile` parameters are deprecated since Python 3.6; "
+            "removed in Python 3.12. Use `context` parameter instead."
+        )
         def starttls(
-            self, keyfile: str | None = None, certfile: str | None = None, context: SSLContext | None = None
+            self, keyfile: StrOrBytesPath | None = None, certfile: StrOrBytesPath | None = None, context: None = None
         ) -> _Reply: ...
 
     def sendmail(
@@ -155,8 +162,6 @@ class SMTP:
     def quit(self) -> _Reply: ...
 
 class SMTP_SSL(SMTP):
-    keyfile: str | None
-    certfile: str | None
     context: SSLContext
     if sys.version_info >= (3, 12):
         def __init__(
@@ -170,17 +175,36 @@ class SMTP_SSL(SMTP):
             context: SSLContext | None = None,
         ) -> None: ...
     else:
+        @overload
         def __init__(
             self,
             host: str = "",
             port: int = 0,
             local_hostname: str | None = None,
-            keyfile: str | None = None,
-            certfile: str | None = None,
+            keyfile: None = None,
+            certfile: None = None,
             timeout: float = ...,
             source_address: _SourceAddress | None = None,
             context: SSLContext | None = None,
         ) -> None: ...
+        @overload
+        @deprecated(
+            "The `keyfile`, `certfile` parameters are deprecated since Python 3.6; "
+            "removed in Python 3.12. Use `context` parameter instead."
+        )
+        def __init__(
+            self,
+            host: str = "",
+            port: int = 0,
+            local_hostname: str | None = None,
+            keyfile: StrOrBytesPath | None = None,
+            certfile: StrOrBytesPath | None = None,
+            timeout: float = ...,
+            source_address: _SourceAddress | None = None,
+            context: None = None,
+        ) -> None: ...
+        keyfile: StrOrBytesPath | None
+        certfile: StrOrBytesPath | None
 
 LMTP_PORT: Final = 2003
 
diff --git a/mypy/typeshed/stdlib/socket.pyi b/mypy/typeshed/stdlib/socket.pyi
index 92bf48c3a2d8..24923192d1a4 100644
--- a/mypy/typeshed/stdlib/socket.pyi
+++ b/mypy/typeshed/stdlib/socket.pyi
@@ -1409,7 +1409,7 @@ if sys.platform == "win32":
 
 else:
     def socketpair(
-        family: int | AddressFamily | None = None, type: SocketType | int = ..., proto: int = 0
+        family: int | AddressFamily | None = None, type: SocketKind | int = ..., proto: int = 0
     ) -> tuple[socket, socket]: ...
 
 class SocketIO(RawIOBase):
diff --git a/mypy/typeshed/stdlib/sre_compile.pyi b/mypy/typeshed/stdlib/sre_compile.pyi
index d8f0b7937e99..486b2f743eeb 100644
--- a/mypy/typeshed/stdlib/sre_compile.pyi
+++ b/mypy/typeshed/stdlib/sre_compile.pyi
@@ -3,9 +3,10 @@ from sre_constants import *
 from sre_constants import _NamedIntConstant
 from sre_parse import SubPattern
 from typing import Any, Final
+from typing_extensions import TypeIs
 
 MAXCODE: Final[int]
 
 def dis(code: list[_NamedIntConstant]) -> None: ...
-def isstring(obj: Any) -> bool: ...
+def isstring(obj: object) -> TypeIs[str | bytes]: ...
 def compile(p: str | bytes | SubPattern, flags: int = 0) -> Pattern[Any]: ...
diff --git a/mypy/typeshed/stdlib/ssl.pyi b/mypy/typeshed/stdlib/ssl.pyi
index aa94fc84255e..2053005f1ba6 100644
--- a/mypy/typeshed/stdlib/ssl.pyi
+++ b/mypy/typeshed/stdlib/ssl.pyi
@@ -83,36 +83,6 @@ class SSLCertVerificationError(SSLError, ValueError):
 
 CertificateError = SSLCertVerificationError
 
-if sys.version_info < (3, 12):
-    @deprecated("Deprecated since Python 3.7; removed in Python 3.12. Use `SSLContext.wrap_socket()` instead.")
-    def wrap_socket(
-        sock: socket.socket,
-        keyfile: StrOrBytesPath | None = None,
-        certfile: StrOrBytesPath | None = None,
-        server_side: bool = False,
-        cert_reqs: int = ...,
-        ssl_version: int = ...,
-        ca_certs: str | None = None,
-        do_handshake_on_connect: bool = True,
-        suppress_ragged_eofs: bool = True,
-        ciphers: str | None = None,
-    ) -> SSLSocket: ...
-    @deprecated("Deprecated since Python 3.7; removed in Python 3.12.")
-    def match_hostname(cert: _PeerCertRetDictType, hostname: str) -> None: ...
-
-def cert_time_to_seconds(cert_time: str) -> int: ...
-
-if sys.version_info >= (3, 10):
-    def get_server_certificate(
-        addr: tuple[str, int], ssl_version: int = ..., ca_certs: str | None = None, timeout: float = ...
-    ) -> str: ...
-
-else:
-    def get_server_certificate(addr: tuple[str, int], ssl_version: int = ..., ca_certs: str | None = None) -> str: ...
-
-def DER_cert_to_PEM_cert(der_cert_bytes: ReadableBuffer) -> str: ...
-def PEM_cert_to_DER_cert(pem_cert_string: str) -> bytes: ...
-
 class DefaultVerifyPaths(NamedTuple):
     cafile: str
     capath: str
@@ -321,7 +291,9 @@ class SSLSocket(socket.socket):
     @overload
     def sendto(self, data: ReadableBuffer, flags_or_addr: int, addr: socket._Address) -> int: ...
     def shutdown(self, how: int) -> None: ...
+    @deprecated("Deprecated since Python 3.6. Use `SSLSocket.recv` method instead.")
     def read(self, len: int = 1024, buffer: bytearray | None = None) -> bytes: ...
+    @deprecated("Deprecated since Python 3.6. Use `SSLSocket.send` method instead.")
     def write(self, data: ReadableBuffer) -> int: ...
     def do_handshake(self, block: bool = False) -> None: ...  # block is undocumented
     @overload
@@ -354,6 +326,40 @@ class SSLSocket(socket.socket):
         def get_verified_chain(self) -> list[bytes]: ...
         def get_unverified_chain(self) -> list[bytes]: ...
 
+if sys.version_info < (3, 12):
+    @deprecated("Deprecated since Python 3.7; removed in Python 3.12. Use `SSLContext.wrap_socket()` instead.")
+    def wrap_socket(
+        sock: socket.socket,
+        keyfile: StrOrBytesPath | None = None,
+        certfile: StrOrBytesPath | None = None,
+        server_side: bool = False,
+        cert_reqs: int = VerifyMode.CERT_NONE,
+        ssl_version: int = _SSLMethod.PROTOCOL_TLS,
+        ca_certs: str | None = None,
+        do_handshake_on_connect: bool = True,
+        suppress_ragged_eofs: bool = True,
+        ciphers: str | None = None,
+    ) -> SSLSocket: ...
+    @deprecated("Deprecated since Python 3.7; removed in Python 3.12.")
+    def match_hostname(cert: _PeerCertRetDictType, hostname: str) -> None: ...
+
+def cert_time_to_seconds(cert_time: str) -> int: ...
+def DER_cert_to_PEM_cert(der_cert_bytes: ReadableBuffer) -> str: ...
+def PEM_cert_to_DER_cert(pem_cert_string: str) -> bytes: ...
+
+if sys.version_info >= (3, 10):
+    def get_server_certificate(
+        addr: tuple[str, int],
+        ssl_version: int = _SSLMethod.PROTOCOL_TLS_CLIENT,
+        ca_certs: str | None = None,
+        timeout: float = ...,
+    ) -> str: ...
+
+else:
+    def get_server_certificate(
+        addr: tuple[str, int], ssl_version: int = _SSLMethod.PROTOCOL_TLS_CLIENT, ca_certs: str | None = None
+    ) -> str: ...
+
 class TLSVersion(enum.IntEnum):
     MINIMUM_SUPPORTED = -2
     MAXIMUM_SUPPORTED = -1
@@ -446,7 +452,7 @@ if sys.version_info >= (3, 10):
     def _create_unverified_context(
         protocol: int | None = None,
         *,
-        cert_reqs: int = ...,
+        cert_reqs: int = VerifyMode.CERT_NONE,
         check_hostname: bool = False,
         purpose: Purpose = Purpose.SERVER_AUTH,
         certfile: StrOrBytesPath | None = None,
@@ -460,7 +466,7 @@ else:
     def _create_unverified_context(
         protocol: int = ...,
         *,
-        cert_reqs: int = ...,
+        cert_reqs: int = VerifyMode.CERT_NONE,
         check_hostname: bool = False,
         purpose: Purpose = Purpose.SERVER_AUTH,
         certfile: StrOrBytesPath | None = None,
diff --git a/mypy/typeshed/stdlib/statistics.pyi b/mypy/typeshed/stdlib/statistics.pyi
index ba9e5f1b6b71..188bed3375bf 100644
--- a/mypy/typeshed/stdlib/statistics.pyi
+++ b/mypy/typeshed/stdlib/statistics.pyi
@@ -1,9 +1,9 @@
 import sys
 from _typeshed import SupportsRichComparisonT
-from collections.abc import Callable, Hashable, Iterable, Sequence
+from collections.abc import Callable, Hashable, Iterable, Sequence, Sized
 from decimal import Decimal
 from fractions import Fraction
-from typing import Literal, NamedTuple, SupportsFloat, SupportsIndex, TypeVar
+from typing import Literal, NamedTuple, Protocol, SupportsFloat, SupportsIndex, TypeVar
 from typing_extensions import Self, TypeAlias
 
 __all__ = [
@@ -41,6 +41,10 @@ _HashableT = TypeVar("_HashableT", bound=Hashable)
 # Used in NormalDist.samples and kde_random
 _Seed: TypeAlias = int | float | str | bytes | bytearray  # noqa: Y041
 
+# Used in linear_regression
+_T_co = TypeVar("_T_co", covariant=True)
+
+class _SizedIterable(Iterable[_T_co], Sized, Protocol[_T_co]): ...
 class StatisticsError(ValueError): ...
 
 if sys.version_info >= (3, 11):
@@ -129,11 +133,13 @@ if sys.version_info >= (3, 10):
 
 if sys.version_info >= (3, 11):
     def linear_regression(
-        regressor: Sequence[_Number], dependent_variable: Sequence[_Number], /, *, proportional: bool = False
+        regressor: _SizedIterable[_Number], dependent_variable: _SizedIterable[_Number], /, *, proportional: bool = False
     ) -> LinearRegression: ...
 
 elif sys.version_info >= (3, 10):
-    def linear_regression(regressor: Sequence[_Number], dependent_variable: Sequence[_Number], /) -> LinearRegression: ...
+    def linear_regression(
+        regressor: _SizedIterable[_Number], dependent_variable: _SizedIterable[_Number], /
+    ) -> LinearRegression: ...
 
 if sys.version_info >= (3, 13):
     _Kernel: TypeAlias = Literal[
diff --git a/mypy/typeshed/stdlib/sys/_monitoring.pyi b/mypy/typeshed/stdlib/sys/_monitoring.pyi
index db799e6f32f8..83f1e7dd0f1d 100644
--- a/mypy/typeshed/stdlib/sys/_monitoring.pyi
+++ b/mypy/typeshed/stdlib/sys/_monitoring.pyi
@@ -59,10 +59,10 @@ class _events:
 def get_events(tool_id: int, /) -> int: ...
 def set_events(tool_id: int, event_set: int, /) -> None: ...
 def get_local_events(tool_id: int, code: CodeType, /) -> int: ...
-def set_local_events(tool_id: int, code: CodeType, event_set: int, /) -> int: ...
+def set_local_events(tool_id: int, code: CodeType, event_set: int, /) -> None: ...
 def restart_events() -> None: ...
 
 DISABLE: Final[object]
 MISSING: Final[object]
 
-def register_callback(tool_id: int, event: int, func: Callable[..., Any] | None, /) -> Callable[..., Any] | None: ...
+def register_callback(tool_id: int, event: int, func: Callable[..., object] | None, /) -> Callable[..., Any] | None: ...
diff --git a/mypy/typeshed/stdlib/syslog.pyi b/mypy/typeshed/stdlib/syslog.pyi
index 1e0d0d383902..b639c28c7f2d 100644
--- a/mypy/typeshed/stdlib/syslog.pyi
+++ b/mypy/typeshed/stdlib/syslog.pyi
@@ -49,7 +49,7 @@ if sys.platform != "win32":
     def LOG_MASK(pri: int, /) -> int: ...
     def LOG_UPTO(pri: int, /) -> int: ...
     def closelog() -> None: ...
-    def openlog(ident: str = ..., logoption: int = ..., facility: int = ...) -> None: ...
+    def openlog(ident: str = ..., logoption: int = 0, facility: int = ...) -> None: ...
     def setlogmask(maskpri: int, /) -> int: ...
     @overload
     def syslog(priority: int, message: str) -> None: ...
diff --git a/mypy/typeshed/stdlib/tarfile.pyi b/mypy/typeshed/stdlib/tarfile.pyi
index 4ef096be330e..5eecdd350c0a 100644
--- a/mypy/typeshed/stdlib/tarfile.pyi
+++ b/mypy/typeshed/stdlib/tarfile.pyi
@@ -127,9 +127,9 @@ class TarFile:
     encoding: str | None
     errors: str
     fileobject: type[ExFileObject]  # undocumented
-    pax_headers: Mapping[str, str] | None
+    pax_headers: Mapping[str, str]
     debug: int | None
-    errorlevel: int | None
+    errorlevel: int
     offset: int  # undocumented
     extraction_filter: _FilterFunction | None
     if sys.version_info >= (3, 13):
diff --git a/mypy/typeshed/stdlib/timeit.pyi b/mypy/typeshed/stdlib/timeit.pyi
index a5da943c8484..61935815f68b 100644
--- a/mypy/typeshed/stdlib/timeit.pyi
+++ b/mypy/typeshed/stdlib/timeit.pyi
@@ -1,3 +1,4 @@
+import time
 from collections.abc import Callable, Sequence
 from typing import IO, Any
 from typing_extensions import TypeAlias
@@ -11,7 +12,11 @@ default_timer: _Timer
 
 class Timer:
     def __init__(
-        self, stmt: _Stmt = "pass", setup: _Stmt = "pass", timer: _Timer = ..., globals: dict[str, Any] | None = None
+        self,
+        stmt: _Stmt = "pass",
+        setup: _Stmt = "pass",
+        timer: _Timer = time.perf_counter,
+        globals: dict[str, Any] | None = None,
     ) -> None: ...
     def print_exc(self, file: IO[str] | None = None) -> None: ...
     def timeit(self, number: int = 1000000) -> float: ...
@@ -19,12 +24,16 @@ class Timer:
     def autorange(self, callback: Callable[[int, float], object] | None = None) -> tuple[int, float]: ...
 
 def timeit(
-    stmt: _Stmt = "pass", setup: _Stmt = "pass", timer: _Timer = ..., number: int = 1000000, globals: dict[str, Any] | None = None
+    stmt: _Stmt = "pass",
+    setup: _Stmt = "pass",
+    timer: _Timer = time.perf_counter,
+    number: int = 1000000,
+    globals: dict[str, Any] | None = None,
 ) -> float: ...
 def repeat(
     stmt: _Stmt = "pass",
     setup: _Stmt = "pass",
-    timer: _Timer = ...,
+    timer: _Timer = time.perf_counter,
     repeat: int = 5,
     number: int = 1000000,
     globals: dict[str, Any] | None = None,
diff --git a/mypy/typeshed/stdlib/tkinter/__init__.pyi b/mypy/typeshed/stdlib/tkinter/__init__.pyi
index ef57faa2b009..90225a8a3652 100644
--- a/mypy/typeshed/stdlib/tkinter/__init__.pyi
+++ b/mypy/typeshed/stdlib/tkinter/__init__.pyi
@@ -1,6 +1,6 @@
 import _tkinter
 import sys
-from _typeshed import Incomplete, MaybeNone, StrOrBytesPath
+from _typeshed import FileDescriptorLike, Incomplete, MaybeNone, StrOrBytesPath
 from collections.abc import Callable, Iterable, Mapping, Sequence
 from tkinter.constants import *
 from tkinter.font import _FontDescription
@@ -1005,34 +1005,43 @@ class Tk(Misc, Wm):
     # Tk has __getattr__ so that tk_instance.foo falls back to tk_instance.tk.foo
     # Please keep in sync with _tkinter.TkappType.
     # Some methods are intentionally missing because they are inherited from Misc instead.
-    def adderrorinfo(self, msg: str, /): ...
+    def adderrorinfo(self, msg: str, /) -> None: ...
     def call(self, command: Any, /, *args: Any) -> Any: ...
-    def createcommand(self, name: str, func, /): ...
+    # TODO: Figure out what arguments the following `func` callbacks should accept
+    def createcommand(self, name: str, func: Callable[..., object], /) -> None: ...
     if sys.platform != "win32":
-        def createfilehandler(self, file, mask: int, func, /): ...
-        def deletefilehandler(self, file, /) -> None: ...
+        def createfilehandler(self, file: FileDescriptorLike, mask: int, func: Callable[..., object], /) -> None: ...
+        def deletefilehandler(self, file: FileDescriptorLike, /) -> None: ...
 
-    def createtimerhandler(self, milliseconds: int, func, /): ...
-    def dooneevent(self, flags: int = 0, /): ...
+    def createtimerhandler(self, milliseconds: int, func: Callable[..., object], /): ...
+    def dooneevent(self, flags: int = 0, /) -> int: ...
     def eval(self, script: str, /) -> str: ...
-    def evalfile(self, fileName: str, /): ...
-    def exprboolean(self, s: str, /): ...
-    def exprdouble(self, s: str, /): ...
-    def exprlong(self, s: str, /): ...
-    def exprstring(self, s: str, /): ...
+    def evalfile(self, fileName: str, /) -> str: ...
+    def exprboolean(self, s: str, /) -> Literal[0, 1]: ...
+    def exprdouble(self, s: str, /) -> float: ...
+    def exprlong(self, s: str, /) -> int: ...
+    def exprstring(self, s: str, /) -> str: ...
     def globalgetvar(self, *args, **kwargs): ...
     def globalsetvar(self, *args, **kwargs): ...
     def globalunsetvar(self, *args, **kwargs): ...
     def interpaddr(self) -> int: ...
     def loadtk(self) -> None: ...
-    def record(self, script: str, /): ...
+    def record(self, script: str, /) -> str: ...
     if sys.version_info < (3, 11):
         @deprecated("Deprecated since Python 3.9; removed in Python 3.11. Use `splitlist()` instead.")
         def split(self, arg, /): ...
 
-    def splitlist(self, arg, /): ...
+    def splitlist(self, arg, /) -> tuple[Incomplete, ...]: ...
     def unsetvar(self, *args, **kwargs): ...
-    def wantobjects(self, *args, **kwargs): ...
+    if sys.version_info >= (3, 14):
+        @overload
+        def wantobjects(self) -> Literal[0, 1]: ...
+    else:
+        @overload
+        def wantobjects(self) -> bool: ...
+
+    @overload
+    def wantobjects(self, wantobjects: Literal[0, 1] | bool, /) -> None: ...
     def willdispatch(self) -> None: ...
 
 def Tcl(screenName: str | None = None, baseName: str | None = None, className: str = "Tk", useTk: bool = False) -> Tk: ...
diff --git a/mypy/typeshed/stdlib/tkinter/ttk.pyi b/mypy/typeshed/stdlib/tkinter/ttk.pyi
index 1d72acd99512..7143c7cce592 100644
--- a/mypy/typeshed/stdlib/tkinter/ttk.pyi
+++ b/mypy/typeshed/stdlib/tkinter/ttk.pyi
@@ -2,10 +2,10 @@ import _tkinter
 import sys
 import tkinter
 from _typeshed import MaybeNone
-from collections.abc import Callable, Iterable
+from collections.abc import Callable, Iterable, Sequence
 from tkinter.font import _FontDescription
-from typing import Any, Literal, TypedDict, overload, type_check_only
-from typing_extensions import Never, TypeAlias, Unpack
+from typing import Any, Literal, TypedDict, TypeVar, overload, type_check_only
+from typing_extensions import Never, ParamSpec, TypeAlias, Unpack
 
 __all__ = [
     "Button",
@@ -54,6 +54,9 @@ _Statespec: TypeAlias = tuple[Unpack[tuple[str, ...]], Any]
 _ImageStatespec: TypeAlias = tuple[Unpack[tuple[str, ...]], tkinter._Image | str]
 _VsapiStatespec: TypeAlias = tuple[Unpack[tuple[str, ...]], int]
 
+_P = ParamSpec("_P")
+_T = TypeVar("_T")
+
 class _Layout(TypedDict, total=False):
     side: Literal["left", "right", "top", "bottom"]
     sticky: str  # consists of letters 'n', 's', 'w', 'e', may contain repeats, may be empty
@@ -201,10 +204,15 @@ class Style:
     def theme_use(self, themename: None = None) -> str: ...
 
 class Widget(tkinter.Widget):
-    def __init__(self, master: tkinter.Misc | None, widgetname, kw=None) -> None: ...
+    def __init__(self, master: tkinter.Misc | None, widgetname: str | None, kw: dict[str, Any] | None = None) -> None: ...
     def identify(self, x: int, y: int) -> str: ...
-    def instate(self, statespec, callback=None, *args, **kw): ...
-    def state(self, statespec=None): ...
+    @overload
+    def instate(self, statespec: Sequence[str], callback: None = None) -> bool: ...
+    @overload
+    def instate(
+        self, statespec: Sequence[str], callback: Callable[_P, _T], *args: _P.args, **kw: _P.kwargs
+    ) -> Literal[False] | _T: ...
+    def state(self, statespec: Sequence[str] | None = None) -> tuple[str, ...]: ...
 
 class Button(Widget):
     def __init__(
diff --git a/mypy/typeshed/stdlib/types.pyi b/mypy/typeshed/stdlib/types.pyi
index 0293e5cb0b4b..568f6ea68d0b 100644
--- a/mypy/typeshed/stdlib/types.pyi
+++ b/mypy/typeshed/stdlib/types.pyi
@@ -400,7 +400,7 @@ class GeneratorType(Generator[_YieldT_co, _SendT_contra, _ReturnT_co]):
     @property
     def gi_code(self) -> CodeType: ...
     @property
-    def gi_frame(self) -> FrameType: ...
+    def gi_frame(self) -> FrameType | None: ...
     @property
     def gi_running(self) -> bool: ...
     @property
@@ -429,7 +429,7 @@ class AsyncGeneratorType(AsyncGenerator[_YieldT_co, _SendT_contra]):
     @property
     def ag_code(self) -> CodeType: ...
     @property
-    def ag_frame(self) -> FrameType: ...
+    def ag_frame(self) -> FrameType | None: ...
     @property
     def ag_running(self) -> bool: ...
     __name__: str
@@ -462,13 +462,8 @@ class CoroutineType(Coroutine[_YieldT_co, _SendT_nd_contra, _ReturnT_nd_co]):
     def cr_await(self) -> Any | None: ...
     @property
     def cr_code(self) -> CodeType: ...
-    if sys.version_info >= (3, 12):
-        @property
-        def cr_frame(self) -> FrameType | None: ...
-    else:
-        @property
-        def cr_frame(self) -> FrameType: ...
-
+    @property
+    def cr_frame(self) -> FrameType | None: ...
     @property
     def cr_running(self) -> bool: ...
     @property
diff --git a/mypy/typeshed/stdlib/typing.pyi b/mypy/typeshed/stdlib/typing.pyi
index 8b36ff7b1a92..5521055bdef3 100644
--- a/mypy/typeshed/stdlib/typing.pyi
+++ b/mypy/typeshed/stdlib/typing.pyi
@@ -952,7 +952,7 @@ if sys.version_info >= (3, 14):
         localns: Mapping[str, Any] | None = None,
         include_extras: bool = False,
         *,
-        format: Format | None = None,
+        format: Format | None = None,  # Default: Format.VALUE
     ) -> dict[str, Any]: ...  # AnnotationForm
 
 else:
diff --git a/mypy/typeshed/stdlib/urllib/request.pyi b/mypy/typeshed/stdlib/urllib/request.pyi
index a00e7406ee1e..f7e1f278d3e6 100644
--- a/mypy/typeshed/stdlib/urllib/request.pyi
+++ b/mypy/typeshed/stdlib/urllib/request.pyi
@@ -6,7 +6,7 @@ from email.message import Message
 from http.client import HTTPConnection, HTTPMessage, HTTPResponse
 from http.cookiejar import CookieJar
 from re import Pattern
-from typing import IO, Any, ClassVar, NoReturn, Protocol, TypeVar, overload, type_check_only
+from typing import IO, Any, ClassVar, Literal, NoReturn, Protocol, TypeVar, overload, type_check_only
 from typing_extensions import TypeAlias, deprecated
 from urllib.error import HTTPError as HTTPError
 from urllib.response import addclosehook, addinfourl
@@ -65,16 +65,32 @@ if sys.version_info >= (3, 13):
     ) -> _UrlopenRet: ...
 
 else:
+    @overload
     def urlopen(
         url: str | Request,
         data: _DataType | None = None,
         timeout: float | None = ...,
         *,
-        cafile: str | None = None,
-        capath: str | None = None,
-        cadefault: bool = False,
+        cafile: None = None,
+        capath: None = None,
+        cadefault: Literal[False] = False,
         context: ssl.SSLContext | None = None,
     ) -> _UrlopenRet: ...
+    @overload
+    @deprecated(
+        "The `cafile`, `capath`, `cadefault` parameters are deprecated since Python 3.6; "
+        "removed in Python 3.13. Use `context` parameter instead."
+    )
+    def urlopen(
+        url: str | Request,
+        data: _DataType | None = None,
+        timeout: float | None = ...,
+        *,
+        cafile: StrOrBytesPath | None = None,
+        capath: StrOrBytesPath | None = None,
+        cadefault: bool = False,
+        context: None = None,
+    ) -> _UrlopenRet: ...
 
 def install_opener(opener: OpenerDirector) -> None: ...
 def build_opener(*handlers: BaseHandler | Callable[[], BaseHandler]) -> OpenerDirector: ...
diff --git a/mypy/typeshed/stdlib/urllib/response.pyi b/mypy/typeshed/stdlib/urllib/response.pyi
index 65df9cdff58f..459b9d1bbdda 100644
--- a/mypy/typeshed/stdlib/urllib/response.pyi
+++ b/mypy/typeshed/stdlib/urllib/response.pyi
@@ -4,6 +4,7 @@ from collections.abc import Callable, Iterable
 from email.message import Message
 from types import TracebackType
 from typing import IO, Any
+from typing_extensions import deprecated
 
 __all__ = ["addbase", "addclosehook", "addinfo", "addinfourl"]
 
@@ -32,9 +33,13 @@ class addinfo(addbase):
 
 class addinfourl(addinfo):
     url: str
-    code: int | None
+    code: int | None  # Deprecated since Python 3.9. Use `addinfourl.status` attribute instead.
     @property
     def status(self) -> int | None: ...
     def __init__(self, fp: IO[bytes], headers: Message, url: str, code: int | None = None) -> None: ...
+    @deprecated("Deprecated since Python 3.9. Use `addinfourl.url` attribute instead.")
     def geturl(self) -> str: ...
+    @deprecated("Deprecated since Python 3.9. Use `addinfourl.headers` attribute instead.")
+    def info(self) -> Message: ...
+    @deprecated("Deprecated since Python 3.9. Use `addinfourl.status` attribute instead.")
     def getcode(self) -> int | None: ...
diff --git a/mypy/typeshed/stdlib/xml/etree/ElementTree.pyi b/mypy/typeshed/stdlib/xml/etree/ElementTree.pyi
index 18fcaed37625..5c16bcc4ff23 100644
--- a/mypy/typeshed/stdlib/xml/etree/ElementTree.pyi
+++ b/mypy/typeshed/stdlib/xml/etree/ElementTree.pyi
@@ -258,6 +258,10 @@ class _IterParseIterator(Iterator[tuple[str, Element]], Protocol):
     if sys.version_info >= (3, 11):
         def __del__(self) -> None: ...
 
+@overload
+def iterparse(source: _FileRead, events: Sequence[str] | None = None) -> _IterParseIterator: ...
+@overload
+@deprecated("The `parser` parameter is deprecated since Python 3.4.")
 def iterparse(source: _FileRead, events: Sequence[str] | None = None, parser: XMLParser | None = None) -> _IterParseIterator: ...
 
 _EventQueue: TypeAlias = tuple[str] | tuple[str, tuple[str, str]] | tuple[str, None]
diff --git a/mypy/typeshed/stdlib/zipfile/__init__.pyi b/mypy/typeshed/stdlib/zipfile/__init__.pyi
index df53cdedb4f8..19d8117a621f 100644
--- a/mypy/typeshed/stdlib/zipfile/__init__.pyi
+++ b/mypy/typeshed/stdlib/zipfile/__init__.pyi
@@ -363,8 +363,8 @@ else:
             encoding: str | None = None,
             errors: str | None = None,
             newline: str | None = None,
-            line_buffering: bool = ...,
-            write_through: bool = ...,
+            line_buffering: bool = False,
+            write_through: bool = False,
             *,
             pwd: bytes | None = None,
         ) -> TextIOWrapper: ...
@@ -381,11 +381,11 @@ else:
         def exists(self) -> bool: ...
         def read_text(
             self,
-            encoding: str | None = ...,
-            errors: str | None = ...,
-            newline: str | None = ...,
-            line_buffering: bool = ...,
-            write_through: bool = ...,
+            encoding: str | None = None,
+            errors: str | None = None,
+            newline: str | None = None,
+            line_buffering: bool = False,
+            write_through: bool = False,
         ) -> str: ...
         def read_bytes(self) -> bytes: ...
         if sys.version_info >= (3, 10):
diff --git a/mypy/typeshed/stdlib/zipfile/_path/__init__.pyi b/mypy/typeshed/stdlib/zipfile/_path/__init__.pyi
index 4c7b39ec4c6c..c936c4494c7c 100644
--- a/mypy/typeshed/stdlib/zipfile/_path/__init__.pyi
+++ b/mypy/typeshed/stdlib/zipfile/_path/__init__.pyi
@@ -52,8 +52,8 @@ if sys.version_info >= (3, 12):
             encoding: str | None = None,
             errors: str | None = None,
             newline: str | None = None,
-            line_buffering: bool = ...,
-            write_through: bool = ...,
+            line_buffering: bool = False,
+            write_through: bool = False,
             *,
             pwd: bytes | None = None,
         ) -> TextIOWrapper: ...
@@ -65,11 +65,11 @@ if sys.version_info >= (3, 12):
         def exists(self) -> bool: ...
         def read_text(
             self,
-            encoding: str | None = ...,
-            errors: str | None = ...,
-            newline: str | None = ...,
-            line_buffering: bool = ...,
-            write_through: bool = ...,
+            encoding: str | None = None,
+            errors: str | None = None,
+            newline: str | None = None,
+            line_buffering: bool = False,
+            write_through: bool = False,
         ) -> str: ...
         def read_bytes(self) -> bytes: ...
         def joinpath(self, *other: StrPath) -> Path: ...