diff --git a/tests/migrations/test_operations.py b/tests/migrations/test_operations.py
index c755ff0305..1390638270 100644
--- a/tests/migrations/test_operations.py
+++ b/tests/migrations/test_operations.py
@@ -485,6 +485,7 @@ class OperationTests(MigrationTestBase):
             Pony = models.get_model("test_runpython", "Pony")
             Pony.objects.create(pink=1, weight=3.55)
             Pony.objects.create(weight=5)
+
         def inner_method_reverse(models, schema_editor):
             Pony = models.get_model("test_runpython", "Pony")
             Pony.objects.filter(pink=1, weight=3.55).delete()
@@ -517,7 +518,6 @@ class OperationTests(MigrationTestBase):
                 no_reverse_operation.database_backwards("test_runpython", editor, new_state, project_state)
 
 
-
 class MigrateNothingRouter(object):
     """
     A router that sends all writes to the other database.