Update imports after dropping Python 3.9 (#20322)

Ref: #20154

Author: cdce8p

misc/analyze_cache.py

@@ -7,8 +7,7 @@
 import os.path
 from collections import Counter
 from collections.abc import Iterable
-from typing import Any, Final
-from typing_extensions import TypeAlias as _TypeAlias
+from typing import Any, Final, TypeAlias as _TypeAlias
 
 ROOT: Final = ".mypy_cache/3.5"
 

misc/incremental_checker.py

@@ -44,8 +44,7 @@
 import textwrap
 import time
 from argparse import ArgumentParser, Namespace, RawDescriptionHelpFormatter
-from typing import Any, Final
-from typing_extensions import TypeAlias as _TypeAlias
+from typing import Any, Final, TypeAlias as _TypeAlias
 
 CACHE_PATH: Final = ".incremental_checker_cache.json"
 MYPY_REPO_URL: Final = "https://github.com/python/mypy.git"

misc/perf_checker.py

@@ -8,7 +8,7 @@
 import subprocess
 import textwrap
 import time
-from typing import Callable
+from collections.abc import Callable
 
 
 class Command:

mypy/api.py

@@ -46,8 +46,9 @@
 from __future__ import annotations
 
 import sys
+from collections.abc import Callable
 from io import StringIO
-from typing import Callable, TextIO
+from typing import TextIO
 
 
 def _run(main_wrapper: Callable[[TextIO, TextIO], None]) -> tuple[str, str, int]:

mypy/applytype.py

@@ -1,7 +1,6 @@
 from __future__ import annotations
 
-from collections.abc import Iterable, Sequence
-from typing import Callable
+from collections.abc import Callable, Iterable, Sequence
 
 import mypy.subtypes
 from mypy.erasetype import erase_typevars

mypy/argmap.py

@@ -2,8 +2,8 @@
 
 from __future__ import annotations
 
-from collections.abc import Sequence
-from typing import TYPE_CHECKING, Callable
+from collections.abc import Callable, Sequence
+from typing import TYPE_CHECKING
 
 from mypy import nodes
 from mypy.maptype import map_instance_to_supertype

mypy/binder.py

@@ -3,8 +3,7 @@
 from collections import defaultdict
 from collections.abc import Iterator
 from contextlib import contextmanager
-from typing import NamedTuple
-from typing_extensions import TypeAlias as _TypeAlias
+from typing import NamedTuple, TypeAlias as _TypeAlias
 
 from mypy.erasetype import remove_instance_last_known_values
 from mypy.literals import Key, extract_var_from_literal_hash, literal, literal_hash, subkeys

mypy/build.py

@@ -24,9 +24,17 @@
 import sys
 import time
 import types
-from collections.abc import Iterator, Mapping, Sequence, Set as AbstractSet
-from typing import TYPE_CHECKING, Any, Callable, ClassVar, Final, NoReturn, TextIO, TypedDict
-from typing_extensions import TypeAlias as _TypeAlias
+from collections.abc import Callable, Iterator, Mapping, Sequence, Set as AbstractSet
+from typing import (
+    TYPE_CHECKING,
+    Any,
+    ClassVar,
+    Final,
+    NoReturn,
+    TextIO,
+    TypeAlias as _TypeAlias,
+    TypedDict,
+)
 
 from librt.internal import cache_version
 

mypy/cache.py

@@ -48,8 +48,7 @@
 from __future__ import annotations
 
 from collections.abc import Sequence
-from typing import Any, Final
-from typing_extensions import TypeAlias as _TypeAlias
+from typing import Any, Final, TypeAlias as _TypeAlias
 
 from librt.internal import (
     ReadBuffer as ReadBuffer,

mypy/checker.py

@@ -4,10 +4,19 @@
 
 import itertools
 from collections import defaultdict
-from collections.abc import Iterable, Iterator, Mapping, Sequence, Set as AbstractSet
+from collections.abc import Callable, Iterable, Iterator, Mapping, Sequence, Set as AbstractSet
 from contextlib import ExitStack, contextmanager
-from typing import Callable, Final, Generic, Literal, NamedTuple, TypeVar, cast, overload
-from typing_extensions import TypeAlias as _TypeAlias, TypeGuard
+from typing import (
+    Final,
+    Generic,
+    Literal,
+    NamedTuple,
+    TypeAlias as _TypeAlias,
+    TypeGuard,
+    TypeVar,
+    cast,
+    overload,
+)
 
 import mypy.checkexpr
 from mypy import errorcodes as codes, join, message_registry, nodes, operators