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

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jupyter_resource_usage/api.py

@@ -1,10 +1,8 @@
 import json
 from concurrent.futures import ThreadPoolExecutor
 
-from jupyter_server.base.handlers import APIHandler
-
 import psutil
-
+from jupyter_server.base.handlers import APIHandler
 from tornado import web
 from tornado.concurrent import run_on_executor
 

jupyter_resource_usage/server_extension.py

@@ -1,12 +1,11 @@
 from jupyter_server.utils import url_path_join
+from tornado import ioloop
 
 from jupyter_resource_usage.api import ApiHandler
 from jupyter_resource_usage.config import ResourceUseDisplay
 from jupyter_resource_usage.metrics import PSUtilMetricsLoader
 from jupyter_resource_usage.prometheus import PrometheusHandler
 
-from tornado import ioloop
-
 
 def load_jupyter_server_extension(server_app):
     """

jupyter_resource_usage/utils.py

@@ -1,5 +1,4 @@
 import six
-
 from traitlets import TraitType
 
 # copy-pasted from the master of Traitlets source