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

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

Author: pre-commit-ci[bot]

jupyter_scheduler/backend_registry.py

@@ -16,7 +16,6 @@
 from jupyter_scheduler.orm import create_tables
 from jupyter_scheduler.scheduler import BaseScheduler
 
-
 logger = logging.getLogger(__name__)
 
 
@@ -98,9 +97,7 @@ def initialize(
         """
         for cfg in self._configs:
             try:
-                instance = self._create_backend(
-                    cfg, root_dir, environments_manager, db_url, config
-                )
+                instance = self._create_backend(cfg, root_dir, environments_manager, db_url, config)
                 self._backends[cfg.id] = instance
 
                 # Build extension map for auto-selection

jupyter_scheduler/backends.py

@@ -9,7 +9,7 @@
 """
 
 from dataclasses import dataclass, field
-from typing import Dict, List, Optional, Any
+from typing import Any, Dict, List, Optional
 
 from jupyter_scheduler.pydantic_v1 import BaseModel
 

jupyter_scheduler/extension.py

@@ -4,7 +4,9 @@
 from jupyter_core.paths import jupyter_data_dir
 from jupyter_server.extension.application import ExtensionApp
 from jupyter_server.transutils import _i18n
-from traitlets import Bool, List as TList, Type, Unicode, default
+from traitlets import Bool
+from traitlets import List as TList
+from traitlets import Type, Unicode, default
 
 from jupyter_scheduler.backend_registry import BackendRegistry
 from jupyter_scheduler.backends import BackendConfig
@@ -74,9 +76,7 @@ def _default_backends(self):
         default_value="jupyter_scheduler.scheduler.Scheduler",
         klass="jupyter_scheduler.scheduler.BaseScheduler",
         config=True,
-        help=_i18n(
-            "The scheduler class to use. Deprecated: use 'backends' configuration instead."
-        ),
+        help=_i18n("The scheduler class to use. Deprecated: use 'backends' configuration instead."),
     )
 
     job_files_manager_class = Type(
@@ -134,9 +134,7 @@ def initialize_settings(self):
         backend_configs = self._build_backend_configs()
 
         # Determine default backend
-        default_id = next(
-            (c.id for c in backend_configs if c.is_default), backend_configs[0].id
-        )
+        default_id = next((c.id for c in backend_configs if c.is_default), backend_configs[0].id)
 
         # Create and initialize the backend registry
         registry = BackendRegistry(backend_configs, default_id)

jupyter_scheduler/tests/test_backend_registry.py

@@ -1,10 +1,15 @@
 """Unit tests for BackendRegistry."""
 
-import pytest
 from unittest.mock import MagicMock, patch
 
+import pytest
+
+from jupyter_scheduler.backend_registry import (
+    BackendInstance,
+    BackendRegistry,
+    import_class,
+)
 from jupyter_scheduler.backends import BackendConfig, DescribeBackend
-from jupyter_scheduler.backend_registry import BackendRegistry, BackendInstance, import_class
 
 
 class TestImportClass:
@@ -298,9 +303,7 @@ def test_list_backends_returns_describe_backend_model(
 
     @patch("jupyter_scheduler.backend_registry.create_tables")
     @patch("jupyter_scheduler.backend_registry.import_class")
-    def test_contains_operator(
-        self, mock_import, mock_create_tables, local_backend_config
-    ):
+    def test_contains_operator(self, mock_import, mock_create_tables, local_backend_config):
         """Contains operator works correctly."""
         mock_scheduler_class = MagicMock()
         mock_scheduler_class.return_value = MagicMock()
@@ -393,9 +396,7 @@ def test_uses_global_db_url_when_backend_has_none(self, mock_import, mock_create
 
     @patch("jupyter_scheduler.backend_registry.create_tables")
     @patch("jupyter_scheduler.backend_registry.import_class")
-    def test_extension_map_normalizes_extensions(
-        self, mock_import, mock_create_tables
-    ):
+    def test_extension_map_normalizes_extensions(self, mock_import, mock_create_tables):
         """Extension map normalizes extensions (lowercase, no leading dot)."""
         config = BackendConfig(
             id="test",