Fix Python 2.7 super arguments

Author: mongkok

graphene_django/tests/test_types.py

@@ -78,7 +78,7 @@ class Meta:
         @classmethod
         def __init_subclass_with_meta__(cls, _meta=None, **options):
             _meta = ArticleTypeOptions(cls)
-            super().__init_subclass_with_meta__(_meta=_meta, **options)
+            super(ArticleType, cls).__init_subclass_with_meta__(_meta=_meta, **options)
 
     class Article(ArticleType):
         class Meta: