ruff format

Author: csrbarber

tests/test_session.py

@@ -785,6 +785,6 @@ def get_client():
 
         first_client = clients[0]
         for client in clients[1:]:
-            assert (
-                client is first_client
-            ), "All concurrent calls should return the same instance"
+            assert client is first_client, (
+                "All concurrent calls should return the same instance"
+            )