diff --git a/graphene_django/fields.py b/graphene_django/fields.py
index 3537da3..35bd3f0 100644
--- a/graphene_django/fields.py
+++ b/graphene_django/fields.py
@@ -194,7 +194,7 @@ class DjangoConnectionField(ConnectionField):
         enforce_first_or_last,
         root,
         info,
-        **args
+        **args,
     ):
         first = args.get("first")
         last = args.get("last")
diff --git a/graphene_django/filter/fields.py b/graphene_django/filter/fields.py
index f6ad911..2380632 100644
--- a/graphene_django/filter/fields.py
+++ b/graphene_django/filter/fields.py
@@ -36,7 +36,7 @@ class DjangoFilterConnectionField(DjangoConnectionField):
         extra_filter_meta=None,
         filterset_class=None,
         *args,
-        **kwargs
+        **kwargs,
     ):
         self._fields = fields
         self._provided_filterset_class = filterset_class
diff --git a/graphene_django/filter/utils.py b/graphene_django/filter/utils.py
index 339bd48..9ffcc5c 100644
--- a/graphene_django/filter/utils.py
+++ b/graphene_django/filter/utils.py
@@ -145,7 +145,7 @@ def replace_csv_filters(filterset_class):
                 label=filter_field.label,
                 method=filter_field.method,
                 exclude=filter_field.exclude,
-                **filter_field.extra
+                **filter_field.extra,
             )
         elif filter_type == "range":
             filterset_class.base_filters[name] = RangeFilter(
@@ -154,5 +154,5 @@ def replace_csv_filters(filterset_class):
                 label=filter_field.label,
                 method=filter_field.method,
                 exclude=filter_field.exclude,
-                **filter_field.extra
+                **filter_field.extra,
             )
diff --git a/graphene_django/forms/mutation.py b/graphene_django/forms/mutation.py
index 40d1d3c..30b9af4 100644
--- a/graphene_django/forms/mutation.py
+++ b/graphene_django/forms/mutation.py
@@ -23,8 +23,7 @@ def fields_for_form(form, only_fields, exclude_fields):
     for name, field in form.fields.items():
         is_not_in_only = only_fields and name not in only_fields
         is_excluded = (
-            name
-            in exclude_fields  # or
+            name in exclude_fields  # or
             # name in already_created_fields
         )
 
diff --git a/graphene_django/rest_framework/mutation.py b/graphene_django/rest_framework/mutation.py
index 47e7186..f1f1267 100644
--- a/graphene_django/rest_framework/mutation.py
+++ b/graphene_django/rest_framework/mutation.py
@@ -81,7 +81,7 @@ class SerializerMutation(ClientIDMutation):
         convert_choices_to_enum=True,
         _meta=None,
         optional_fields=(),
-        **options
+        **options,
     ):
         if not serializer_class:
             raise Exception("serializer_class is required for the SerializerMutation")
diff --git a/graphene_django/rest_framework/tests/test_mutation.py b/graphene_django/rest_framework/tests/test_mutation.py
index 58bc4ce..17546c6 100644
--- a/graphene_django/rest_framework/tests/test_mutation.py
+++ b/graphene_django/rest_framework/tests/test_mutation.py
@@ -275,7 +275,7 @@ def test_perform_mutate_success():
     result = MyMethodMutation.mutate_and_get_payload(
         None,
         mock_info(),
-        **{"cool_name": "Narf", "last_edited": datetime.date(2020, 1, 4)}
+        **{"cool_name": "Narf", "last_edited": datetime.date(2020, 1, 4)},
     )
 
     assert result.errors is None
diff --git a/graphene_django/types.py b/graphene_django/types.py
index 163fe3f..02b7693 100644
--- a/graphene_django/types.py
+++ b/graphene_django/types.py
@@ -102,10 +102,8 @@ def validate_fields(type_, model, fields, only_fields, exclude_fields):
         if name in all_field_names:
             # Field is a custom field
             warnings.warn(
-                (
-                    'Excluding the custom field "{field_name}" on DjangoObjectType "{type_}" has no effect. '
-                    'Either remove the custom field or remove the field from the "exclude" list.'
-                ).format(field_name=name, type_=type_)
+                f'Excluding the custom field "{name}" on DjangoObjectType "{type_}" has no effect. '
+                'Either remove the custom field or remove the field from the "exclude" list.'
             )
         else:
             if not hasattr(model, name):
diff --git a/graphene_django/utils/testing.py b/graphene_django/utils/testing.py
index 6cd0e3b..2ca1de9 100644
--- a/graphene_django/utils/testing.py
+++ b/graphene_django/utils/testing.py
@@ -63,7 +63,7 @@ def graphql_query(
             graphql_url,
             json.dumps(body),
             content_type="application/json",
-            **header_params
+            **header_params,
         )
     else:
         resp = client.post(