Cleanup unused imports

jupyterlab_server/app.py

@@ -4,16 +4,11 @@
 # Copyright (c) Jupyter Development Team.
 # Distributed under the terms of the Modified BSD License.
 
-import os, jinja2
-from traitlets import Unicode
-from jinja2 import Environment, FileSystemLoader
-from traitlets import Bool, Unicode, default, observe
 from jupyter_server.extension.application import ExtensionApp, ExtensionAppJinjaMixin
-from traitlets import Unicode, Integer, Dict
+from traitlets import Dict, Integer, Unicode, observe
 
 from ._version import __version__
-from .server import url_path_join as ujoin
-from .handlers import add_handlers, LabConfig
+from .handlers import LabConfig, add_handlers
 
 
 class LabServerApp(ExtensionAppJinjaMixin, LabConfig, ExtensionApp):

jupyterlab_server/config.py

@@ -4,20 +4,18 @@
 # Copyright (c) Jupyter Development Team.
 # Distributed under the terms of the Modified BSD License.
 
+import json
+import os.path as osp
 from glob import iglob
 from itertools import chain
-import json
 from os.path import join as pjoin
-import os.path as osp
-import os
 
-from jupyter_core.paths import jupyter_path, jupyter_config_dir, SYSTEM_CONFIG_PATH
+from jupyter_core.paths import SYSTEM_CONFIG_PATH, jupyter_config_dir, jupyter_path
 from jupyter_server.services.config.manager import ConfigManager, recursive_update
 from traitlets import Bool, HasTraits, List, Unicode, default
 
 from .server import url_path_join as ujoin
 
-
 # -----------------------------------------------------------------------------
 # Module globals
 # -----------------------------------------------------------------------------

jupyterlab_server/handlers.py

@@ -3,15 +3,10 @@
 
 # Copyright (c) Jupyter Development Team.
 # Distributed under the terms of the Modified BSD License.
-from glob import glob
-import json
 import os
-import os.path as osp
 from urllib.parse import urlparse
 
-from jinja2 import FileSystemLoader, TemplateError
 from tornado import template, web
-from traitlets import Bool, HasTraits, List, Unicode, default
 
 from jupyter_server.extension.handler import ExtensionHandlerMixin, ExtensionHandlerJinjaMixin
 

jupyterlab_server/listings_handler.py

@@ -3,19 +3,12 @@
 # Copyright (c) Jupyter Development Team.
 # Distributed under the terms of the Modified BSD License.
 
-import os
-import time
 import json
-import re
-import tornado
-
-from .server import APIHandler
-
-from traitlets import Instance
-
 
 import requests
+import tornado
 
+from .server import APIHandler
 
 LISTINGS_URL_SUFFIX='@jupyterlab/extensionmanager-extension/listings.json'
 
@@ -55,7 +48,7 @@ class ListingsHandler(APIHandler):
 
     """Below fields are class level fields that are accessed and populated
     by the initialization and the fetch_listings methods.
-    Some fields are initialized before the handler creation in the 
+    Some fields are initialized before the handler creation in the
     handlers.py#add_handlers method.
     Having those fields predefined reduces the guards in the methods using
     them.

jupyterlab_server/process_app.py

@@ -2,17 +2,12 @@
 """A lab app that runs a sub process for a demo or a test."""
 import sys
 
+from jupyter_server.extension.application import ExtensionApp, ExtensionAppJinjaMixin
 from tornado.ioloop import IOLoop
-from traitlets import Bool
 
-from .server import ServerApp
-from .handlers import add_handlers, LabConfig
+from .handlers import LabConfig, add_handlers
 from .process import Process
 
-from traitlets import Unicode
-
-from jupyter_server.extension.application import ExtensionApp, ExtensionAppJinjaMixin
-
 
 class ProcessApp(ExtensionAppJinjaMixin, LabConfig, ExtensionApp):
     """A jupyterlab app that runs a separate process and exits on completion."""

jupyterlab_server/pytest_plugin.py

@@ -1,16 +1,14 @@
-import pytest, shutil, os
 import json
+import os
 import os.path as osp
+import shutil
 from os.path import join as pjoin
 
-from jupyterlab_server import LabServerApp, LabConfig
+import pytest
 
-from traitlets import Unicode
-
-from jupyterlab_server.tests.utils import here
+from jupyterlab_server import LabServerApp
 from jupyterlab_server.app import LabServerApp
 
-
 pytest_plugins = [
     "jupyter_server.pytest_plugin"
 ]

jupyterlab_server/settings_handler.py

@@ -4,18 +4,16 @@
 # Distributed under the terms of the Modified BSD License.
 import json
 import os
-
 from glob import glob
+
 import json5
-from jsonschema import ValidationError
 from jsonschema import Draft4Validator as Validator
-from tornado import web
-
-from jupyter_server.extension.handler import ExtensionHandlerMixin, ExtensionHandlerJinjaMixin
+from jsonschema import ValidationError
+from jupyter_server.extension.handler import ExtensionHandlerJinjaMixin, ExtensionHandlerMixin
 from jupyter_server.services.config.manager import ConfigManager, recursive_update
+from tornado import web
 
-from .server import APIHandler, json_errors, tz
-
+from .server import APIHandler, tz
 
 # The JupyterLab settings file extension.
 SETTINGS_EXTENSION = '.jupyterlab-settings'

jupyterlab_server/themes_handler.py

@@ -3,13 +3,14 @@
 # Copyright (c) Jupyter Development Team.
 # Distributed under the terms of the Modified BSD License.
 
-from glob import glob
-from os import path as osp
 import os
 import re
+from glob import glob
+from os import path as osp
 from urllib.parse import urlparse
 
-from .server import FileFindHandler, url_path_join as ujoin
+from .server import FileFindHandler
+from .server import url_path_join as ujoin
 
 
 class ThemesHandler(FileFindHandler):
@@ -24,7 +25,7 @@ def initialize(self, path, default_filename=None,
         for ext_dir in labextensions_path:
             theme_pattern = ext_dir + '/**/themes'
             ext_paths.extend([path for path in glob(theme_pattern, recursive=True)])
-        
+
         # Add the core theme path last
         if not isinstance(path, list):
             path = [path]

jupyterlab_server/translation_utils.py

@@ -4,8 +4,8 @@
 """
 
 import gettext
-import json
 import importlib
+import json
 import os
 import subprocess
 import sys
@@ -621,7 +621,7 @@ def load(cls, domain: str) -> TranslationBundle:
         ----------
         domain: str
             The translations domain. The normalized python package name.
-        
+
         Returns
         -------
         Translator

jupyterlab_server/translations_handler.py

@@ -6,16 +6,15 @@
 """
 
 import json
-import os
 import traceback
 
 import tornado
-from tornado import gen, web
+from tornado import gen
 
+from .server import APIHandler
 from .settings_handler import get_settings
 from .translation_utils import get_language_pack, get_language_packs, is_valid_locale, translator
 
-from .server import APIHandler, url_path_join
 
 SCHEMA_NAME = '@jupyterlab/translation-extension:plugin'
 

jupyterlab_server/workspaces_handler.py

@@ -8,12 +8,12 @@
 import re
 import unicodedata
 import urllib
-from datetime import datetime
-from tornado import web
 
-from .server import APIHandler, json_errors, url_path_join as ujoin, tz
+from jupyter_server.extension.handler import ExtensionHandlerJinjaMixin, ExtensionHandlerMixin
+from tornado import web
 
-from jupyter_server.extension.handler import ExtensionHandlerMixin, ExtensionHandlerJinjaMixin
+from .server import APIHandler, tz
+from .server import url_path_join as ujoin
 
 # The JupyterLab workspace file extension.
 WORKSPACE_EXTENSION = '.jupyterlab-workspace'