Upgrade to isort 5 (#4323)

This now also reformats imports not at the top of files.

stdlib/3/asyncio/__init__.pyi

@@ -89,13 +89,10 @@ else:
         from asyncio.events import SendfileNotAvailableError as SendfileNotAvailableError
     from asyncio.futures import (
         CancelledError as CancelledError,
-        TimeoutError as TimeoutError,
         InvalidStateError as InvalidStateError,
+        TimeoutError as TimeoutError,
     )
-    from asyncio.streams import (
-        IncompleteReadError as IncompleteReadError,
-        LimitOverrunError as LimitOverrunError,
-    )
+    from asyncio.streams import IncompleteReadError as IncompleteReadError, LimitOverrunError as LimitOverrunError
 
 if sys.version_info >= (3, 7):
     from asyncio.protocols import BufferedProtocol as BufferedProtocol
@@ -104,11 +101,7 @@ if sys.version_info >= (3, 7):
     from asyncio.runners import run as run
 
 if sys.version_info >= (3, 7):
-    from asyncio.tasks import (
-        all_tasks as all_tasks,
-        create_task as create_task,
-        current_task as current_task,
-    )
+    from asyncio.tasks import all_tasks as all_tasks, create_task as create_task, current_task as current_task
 if sys.version_info >= (3, 9):
     from asyncio.threads import to_thread as to_thread
 
@@ -117,10 +110,8 @@ if sys.platform == "win32":
     from asyncio.windows_events import *
 
 if sys.platform != "win32":
-    from asyncio.streams import (
-        open_unix_connection as open_unix_connection,
-        start_unix_server as start_unix_server,
-    )
+    from asyncio.streams import open_unix_connection as open_unix_connection, start_unix_server as start_unix_server
+
     from .unix_events import (
         AbstractChildWatcher as AbstractChildWatcher,
         FastChildWatcher as FastChildWatcher,

stdlib/3/asyncio/futures.pyi

@@ -5,8 +5,7 @@ from typing import Any, Awaitable, Callable, Generator, Iterable, List, Optional
 from .events import AbstractEventLoop
 
 if sys.version_info < (3, 8):
-    from concurrent.futures import CancelledError as CancelledError
-    from concurrent.futures import TimeoutError as TimeoutError
+    from concurrent.futures import CancelledError as CancelledError, TimeoutError as TimeoutError
     class InvalidStateError(Error): ...
 
 if sys.version_info >= (3, 7):

stdlib/3/collections/__init__.pyi

@@ -41,10 +41,7 @@ from typing import (
 from . import abc
 
 if sys.version_info >= (3, 6):
-    from typing import (
-        Collection as Collection,
-        AsyncGenerator as AsyncGenerator,
-    )
+    from typing import AsyncGenerator as AsyncGenerator, Collection as Collection
 
 _S = TypeVar("_S")
 _T = TypeVar("_T")

stdlib/3/collections/abc.pyi

@@ -29,8 +29,4 @@ from . import (
 )
 
 if sys.version_info >= (3, 6):
-    from . import (
-        Collection as Collection,
-        Reversible as Reversible,
-        AsyncGenerator as AsyncGenerator,
-    )
+    from . import AsyncGenerator as AsyncGenerator, Collection as Collection, Reversible as Reversible

stdlib/3/importlib/resources.pyi

@@ -3,10 +3,9 @@ import sys
 # This is a >=3.7 module, so we conditionally include its source.
 if sys.version_info >= (3, 7):
     import os
-
     from pathlib import Path
     from types import ModuleType
-    from typing import ContextManager, Iterator, Union, BinaryIO, TextIO
+    from typing import BinaryIO, ContextManager, Iterator, TextIO, Union
 
     Package = Union[str, ModuleType]
     Resource = Union[str, os.PathLike]

stdlib/3/multiprocessing/managers.pyi

@@ -25,7 +25,7 @@ from typing import (
 from .context import BaseContext
 
 if sys.version_info >= (3, 8):
-    from .shared_memory import ShareableList, SharedMemory, _SLT
+    from .shared_memory import _SLT, ShareableList, SharedMemory
 
 _T = TypeVar("_T")
 _KT = TypeVar("_KT")

stdlib/3/re.pyi

@@ -10,9 +10,9 @@ from typing import Any, AnyStr, Callable, Iterator, List, Optional, Tuple, Union
 
 # ----- re variables and constants -----
 if sys.version_info >= (3, 7):
-    from typing import Pattern as Pattern, Match as Match
+    from typing import Match as Match, Pattern as Pattern
 else:
-    from typing import Pattern, Match
+    from typing import Match, Pattern
 
 if sys.version_info >= (3, 6):
     import enum