Drop Python 3.8 branches (#13776)

stdlib/unittest/async_case.pyi

@@ -21,5 +21,5 @@ class IsolatedAsyncioTestCase(TestCase):
     def addAsyncCleanup(self, func: Callable[_P, Awaitable[object]], /, *args: _P.args, **kwargs: _P.kwargs) -> None: ...
     if sys.version_info >= (3, 11):
         async def enterAsyncContext(self, cm: AbstractAsyncContextManager[_T]) -> _T: ...
-    if sys.version_info >= (3, 9):
-        def __del__(self) -> None: ...
+
+    def __del__(self) -> None: ...

stdlib/unittest/case.pyi

@@ -5,27 +5,12 @@ from _typeshed import SupportsDunderGE, SupportsDunderGT, SupportsDunderLE, Supp
 from collections.abc import Callable, Container, Iterable, Mapping, Sequence, Set as AbstractSet
 from contextlib import AbstractContextManager
 from re import Pattern
-from types import TracebackType
-from typing import (
-    Any,
-    AnyStr,
-    ClassVar,
-    Final,
-    Generic,
-    NamedTuple,
-    NoReturn,
-    Protocol,
-    SupportsAbs,
-    SupportsRound,
-    TypeVar,
-    overload,
-)
+from types import GenericAlias, TracebackType
+from typing import Any, AnyStr, Final, Generic, NoReturn, Protocol, SupportsAbs, SupportsRound, TypeVar, overload
 from typing_extensions import Never, ParamSpec, Self, TypeAlias
+from unittest._log import _AssertLogsContext, _LoggingWatcher
 from warnings import WarningMessage
 
-if sys.version_info >= (3, 9):
-    from types import GenericAlias
-
 if sys.version_info >= (3, 10):
     from types import UnionType
 
@@ -58,29 +43,6 @@ class _AssertRaisesBaseContext(_BaseTestCaseContext):
     # but it's not possible to construct an overload which expresses that
     def handle(self, name: str, args: list[Any], kwargs: dict[str, Any]) -> Any: ...
 
-if sys.version_info >= (3, 9):
-    from unittest._log import _AssertLogsContext, _LoggingWatcher
-else:
-    # Unused dummy for _AssertLogsContext. Starting with Python 3.10,
-    # this is generic over the logging watcher, but in lower versions
-    # the watcher is hard-coded.
-    _L = TypeVar("_L")
-
-    class _LoggingWatcher(NamedTuple):
-        records: list[logging.LogRecord]
-        output: list[str]
-
-    class _AssertLogsContext(_BaseTestCaseContext, Generic[_L]):
-        LOGGING_FORMAT: ClassVar[str]
-        logger_name: str
-        level: int
-        msg: None
-        def __init__(self, test_case: TestCase, logger_name: str, level: int) -> None: ...
-        def __enter__(self) -> _LoggingWatcher: ...
-        def __exit__(
-            self, exc_type: type[BaseException] | None, exc_value: BaseException | None, tb: TracebackType | None
-        ) -> bool | None: ...
-
 def addModuleCleanup(function: Callable[_P, object], /, *args: _P.args, **kwargs: _P.kwargs) -> None: ...
 def doModuleCleanups() -> None: ...
 
@@ -345,8 +307,7 @@ class _AssertRaisesContext(_AssertRaisesBaseContext, Generic[_E]):
     def __exit__(
         self, exc_type: type[BaseException] | None, exc_value: BaseException | None, tb: TracebackType | None
     ) -> bool: ...
-    if sys.version_info >= (3, 9):
-        def __class_getitem__(cls, item: Any, /) -> GenericAlias: ...
+    def __class_getitem__(cls, item: Any, /) -> GenericAlias: ...
 
 class _AssertWarnsContext(_AssertRaisesBaseContext):
     warning: WarningMessage

stdlib/unittest/mock.pyi

@@ -51,9 +51,6 @@ else:
         "seal",
     )
 
-if sys.version_info < (3, 9):
-    __version__: Final[str]
-
 FILTER_DIR: Any
 
 class _SentinelObject: