[4.0.x] Refs #33476 -- Reformatted code with Black.

Backport of 9c19aff7c7561e3a82978a272ecdaad40dda5c00 from main.

1 files changed, 4 insertions, 4 deletions

diff --git a/tests/test_runner_apps/databases/tests.py b/tests/test_runner_apps/databases/tests.py
index dbb3b46e0b..b3c85564a1 100644
--- a/tests/test_runner_apps/databases/tests.py
+++ b/tests/test_runner_apps/databases/tests.py
@@ -7,17 +7,17 @@ class NoDatabaseTests(unittest.TestCase):
 
 
 class DefaultDatabaseTests(NoDatabaseTests):
-    databases = {'default'}
+    databases = {"default"}
 
 
 class DefaultDatabaseSerializedTests(NoDatabaseTests):
-    databases = {'default'}
+    databases = {"default"}
     serialized_rollback = True
 
 
 class OtherDatabaseTests(NoDatabaseTests):
-    databases = {'other'}
+    databases = {"other"}
 
 
 class AllDatabasesTests(NoDatabaseTests):
-    databases = '__all__'
+    databases = "__all__"