[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

tests/services/kernels/test_config.py

@@ -1,7 +1,6 @@
 import pytest
-from traitlets.config import Config
-
 from jupyter_server_kernels.kernels.kernelmanager import AsyncMappingKernelManager
+from traitlets.config import Config
 
 
 @pytest.fixture

tests/services/kernels/test_connection.py

@@ -4,13 +4,13 @@
 
 from jupyter_client.jsonutil import json_clean, json_default
 from jupyter_client.session import Session
+from jupyter_server_kernels.kernels.connection.channels import (
+    ZMQChannelsWebsocketConnection,
+)
 from tornado.httpserver import HTTPRequest
 from tornado.websocket import WebSocketHandler
 
 from jupyter_server.serverapp import ServerApp
-from jupyter_server_kernels.kernels.connection.channels import (
-    ZMQChannelsWebsocketConnection,
-)
 
 
 async def test_websocket_connection(jp_serverapp):

tests/services/sessions/test_api.py

@@ -10,12 +10,12 @@
 import pytest
 import tornado
 from jupyter_client.ioloop import AsyncIOLoopKernelManager
+from jupyter_server_kernels.kernels.kernelmanager import AsyncMappingKernelManager
 from nbformat import writes
 from nbformat.v4 import new_notebook
 from tornado.httpclient import HTTPClientError
 from traitlets import default
 
-from jupyter_server_kernels.kernels.kernelmanager import AsyncMappingKernelManager
 from jupyter_server.utils import url_path_join
 
 from ...utils import expected_http_error

tests/services/sessions/test_manager.py

@@ -1,18 +1,18 @@
 import asyncio
 
 import pytest
-from tornado import web
-from traitlets import TraitError
-
-from jupyter_server._tz import isoformat, utcnow
-from jupyter_server.services.contents.manager import ContentsManager
 from jupyter_server_kernels.kernels.kernelmanager import MappingKernelManager
 from jupyter_server_kernels.sessions.sessionmanager import (
     KernelSessionRecord,
     KernelSessionRecordConflict,
     KernelSessionRecordList,
     SessionManager,
 )
+from tornado import web
+from traitlets import TraitError
+
+from jupyter_server._tz import isoformat, utcnow
+from jupyter_server.services.contents.manager import ContentsManager
 
 
 class DummyKernel:

tests/test_serialize.py

@@ -2,7 +2,6 @@
 import os
 
 from jupyter_client.session import Session
-
 from jupyter_server_kernels.kernels.connection.base import (
     deserialize_binary_message,
     serialize_binary_message,