diff --git a/django/conf/__init__.py b/django/conf/__init__.py
index b0a448ca1e..986ea44c72 100644
--- a/django/conf/__init__.py
+++ b/django/conf/__init__.py
@@ -168,7 +168,9 @@ class Settings:
         except ImportError as exc:
             # If the settings module cannot be imported, treat it as a configuration error.
             if exc.name == self.SETTINGS_MODULE:
-                raise ImproperlyConfigured(f"Settings module {self.SETTINGS_MODULE} could not be imported") from exc
+                raise ImproperlyConfigured(
+                    f"Settings module {self.SETTINGS_MODULE} could not be imported"
+                ) from exc
             raise
 
         tuple_settings = (
diff --git a/django/core/management/__init__.py b/django/core/management/__init__.py
index 5e104e098d..aa20424208 100644
--- a/django/core/management/__init__.py
+++ b/django/core/management/__init__.py
@@ -383,8 +383,8 @@ class ManagementUtility:
         except ImproperlyConfigured as exc:
             self.settings_exception = exc
             # The following commands can be run even without a valid settings file configured
-            if subcommand not in {'startproject', 'startapp', 'makemessages'}:
-                sys.stderr.write(str(exc) + '\n')
+            if subcommand not in {"startproject", "startapp", "makemessages"}:
+                sys.stderr.write(str(exc) + "\n")
             self.settings_exception = exc
 
         if settings.configured:
diff --git a/tests/settings_tests/tests.py b/tests/settings_tests/tests.py
index f1b59359b3..d2abbbfb6f 100644
--- a/tests/settings_tests/tests.py
+++ b/tests/settings_tests/tests.py
@@ -340,17 +340,20 @@ class SettingsTests(SimpleTestCase):
 
     def test_unable_to_import_settings_module(self):
         with self.assertRaisesMessage(
-            ImproperlyConfigured, "Settings module fake_settings_module could not be imported"
+            ImproperlyConfigured,
+            "Settings module fake_settings_module could not be imported",
         ):
-            Settings('fake_settings_module')
+            Settings("fake_settings_module")
 
     def test_unable_to_import_a_random_module(self):
         def mock_import_module(_):
-            raise ModuleNotFoundError("No module named 'fake_module'", name="fake_module")
+            raise ModuleNotFoundError(
+                "No module named 'fake_module'", name="fake_module"
+            )
 
         with mock.patch("importlib.import_module", mock_import_module):
             with self.assertRaisesMessage(ImportError, "No module named 'fake_module'"):
-                Settings('fake_settings_module')
+                Settings("fake_settings_module")
 
 
 class TestComplexSettingOverride(SimpleTestCase):