Refs #23919 -- Replaced super(...) with super() in metaclasses.

django/forms/forms.py

@@ -30,7 +30,7 @@ class DeclarativeFieldsMetaclass(MediaDefiningClass):
                 attrs.pop(key)
         attrs['declared_fields'] = dict(current_fields)
 
-        new_class = super(DeclarativeFieldsMetaclass, mcs).__new__(mcs, name, bases, attrs)
+        new_class = super().__new__(mcs, name, bases, attrs)
 
         # Walk through the MRO.
         declared_fields = {}

django/forms/models.py

@@ -214,7 +214,7 @@ class ModelFormMetaclass(DeclarativeFieldsMetaclass):
 
         formfield_callback = attrs.pop('formfield_callback', base_formfield_callback)
 
-        new_class = super(ModelFormMetaclass, mcs).__new__(mcs, name, bases, attrs)
+        new_class = super().__new__(mcs, name, bases, attrs)
 
         if bases == (BaseModelForm,):
             return new_class

django/forms/widgets.py

@@ -183,7 +183,7 @@ class MediaDefiningClass(type):
     Metaclass for classes that can have media definitions.
     """
     def __new__(mcs, name, bases, attrs):
-        new_class = super(MediaDefiningClass, mcs).__new__(mcs, name, bases, attrs)
+        new_class = super().__new__(mcs, name, bases, attrs)
 
         if 'media' not in attrs:
             new_class.media = media_property(new_class)

tests/model_regress/tests.py

@@ -226,7 +226,7 @@ class ModelTests(TestCase):
         """
         class HorseBase(models.base.ModelBase):
             def __init__(cls, name, bases, attrs):
-                super(HorseBase, cls).__init__(name, bases, attrs)
+                super().__init__(name, bases, attrs)
                 cls.horns = (1 if 'magic' in attrs else 0)
 
         class Horse(models.Model, metaclass=HorseBase):