Replaced super(ClassName, self) with super().

django_filters/exceptions.py

@@ -4,6 +4,6 @@
 
 class FieldLookupError(FieldError):
     def __init__(self, model_field, lookup_expr):
-        super(FieldLookupError, self).__init__(
+        super().__init__(
             "Unsupported lookup '%s' for field '%s'." % (lookup_expr, model_field)
         )

django_filters/fields.py

@@ -25,7 +25,7 @@ def __init__(self, fields=None, *args, **kwargs):
             fields = (
                 forms.DecimalField(),
                 forms.DecimalField())
-        super(RangeField, self).__init__(fields, *args, **kwargs)
+        super().__init__(fields, *args, **kwargs)
 
     def compress(self, data_list):
         if data_list:
@@ -40,7 +40,7 @@ def __init__(self, *args, **kwargs):
         fields = (
             forms.DateField(),
             forms.DateField())
-        super(DateRangeField, self).__init__(fields, *args, **kwargs)
+        super().__init__(fields, *args, **kwargs)
 
     def compress(self, data_list):
         if data_list:
@@ -66,7 +66,7 @@ def __init__(self, *args, **kwargs):
         fields = (
             forms.DateTimeField(),
             forms.DateTimeField())
-        super(DateTimeRangeField, self).__init__(fields, *args, **kwargs)
+        super().__init__(fields, *args, **kwargs)
 
 
 class TimeRangeField(RangeField):
@@ -76,7 +76,7 @@ def __init__(self, *args, **kwargs):
         fields = (
             forms.TimeField(),
             forms.TimeField())
-        super(TimeRangeField, self).__init__(fields, *args, **kwargs)
+        super().__init__(fields, *args, **kwargs)
 
 
 class Lookup(namedtuple('Lookup', ('value', 'lookup_type'))):
@@ -99,7 +99,7 @@ def __init__(self, field, lookup_choices, *args, **kwargs):
         widget = LookupTypeWidget(**defaults)
         kwargs['widget'] = widget
         kwargs['help_text'] = field.help_text
-        super(LookupTypeField, self).__init__(fields, *args, **kwargs)
+        super().__init__(fields, *args, **kwargs)
 
     def compress(self, data_list):
         if len(data_list) == 2:
@@ -127,7 +127,7 @@ def strptime(self, value, format):
             if parsed is None:  # Continue with other formats if doesn't match
                 raise ValueError
             return handle_timezone(parsed)
-        return super(IsoDateTimeField, self).strptime(value, format)
+        return super().strptime(value, format)
 
 
 class BaseCSVField(forms.Field):
@@ -146,7 +146,7 @@ def __init__(self, *args, **kwargs):
         widget = kwargs.get('widget') or self.widget
         kwargs['widget'] = self._get_widget_class(widget)
 
-        super(BaseCSVField, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
     def _get_widget_class(self, widget):
         # passthrough, allows for override
@@ -179,7 +179,7 @@ class BaseRangeField(BaseCSVField):
     }
 
     def clean(self, value):
-        value = super(BaseRangeField, self).clean(value)
+        value = super().clean(value)
 
         if value is not None and len(value) != 2:
             raise forms.ValidationError(
@@ -219,7 +219,7 @@ class ModelChoiceIterator(forms.models.ModelChoiceIterator):
     # empty choice, but before the remainder of the choices.
 
     def __iter__(self):
-        iterable = super(ModelChoiceIterator, self).__iter__()
+        iterable = super().__iter__()
 
         if self.field.empty_label is not None:
             yield next(iterable)
@@ -232,21 +232,21 @@ def __iter__(self):
 
     def __len__(self):
         add = 1 if self.field.null_label is not None else 0
-        return super(ModelChoiceIterator, self).__len__() + add
+        return super().__len__() + add
 
 
 class ChoiceIteratorMixin(object):
     def __init__(self, *args, **kwargs):
         self.null_label = kwargs.pop('null_label', settings.NULL_CHOICE_LABEL)
         self.null_value = kwargs.pop('null_value', settings.NULL_CHOICE_VALUE)
 
-        super(ChoiceIteratorMixin, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
     def _get_choices(self):
-        return super(ChoiceIteratorMixin, self)._get_choices()
+        return super()._get_choices()
 
     def _set_choices(self, value):
-        super(ChoiceIteratorMixin, self)._set_choices(value)
+        super()._set_choices(value)
         value = self.iterator(self, self._choices)
 
         self._choices = self.widget.choices = value
@@ -259,15 +259,15 @@ class ChoiceField(ChoiceIteratorMixin, forms.ChoiceField):
 
     def __init__(self, *args, **kwargs):
         self.empty_label = kwargs.pop('empty_label', settings.EMPTY_CHOICE_LABEL)
-        super(ChoiceField, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
 
 class MultipleChoiceField(ChoiceIteratorMixin, forms.MultipleChoiceField):
     iterator = ChoiceIterator
 
     def __init__(self, *args, **kwargs):
         self.empty_label = None
-        super(MultipleChoiceField, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
 
 class ModelChoiceField(ChoiceIteratorMixin, forms.ModelChoiceField):
@@ -277,7 +277,7 @@ def to_python(self, value):
         # bypass the queryset value check
         if self.null_label is not None and value == self.null_value:
             return value
-        return super(ModelChoiceField, self).to_python(value)
+        return super().to_python(value)
 
 
 class ModelMultipleChoiceField(ChoiceIteratorMixin, forms.ModelMultipleChoiceField):
@@ -288,6 +288,6 @@ def _check_values(self, value):
         if null:  # remove the null value and any potential duplicates
             value = [v for v in value if v != self.null_value]
 
-        result = list(super(ModelMultipleChoiceField, self)._check_values(value))
+        result = list(super()._check_values(value))
         result += [self.null_value] if null else []
         return result

django_filters/filters.py

@@ -188,11 +188,11 @@ class ChoiceFilter(Filter):
 
     def __init__(self, *args, **kwargs):
         self.null_value = kwargs.get('null_value', settings.NULL_CHOICE_VALUE)
-        super(ChoiceFilter, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
     def filter(self, qs, value):
         if value != self.null_value:
-            return super(ChoiceFilter, self).filter(qs, value)
+            return super().filter(qs, value)
 
         qs = self.get_method(qs)(**{'%s__%s' % (self.field_name, self.lookup_expr): None})
         return qs.distinct() if self.distinct else qs
@@ -237,7 +237,7 @@ def __init__(self, *args, **kwargs):
         kwargs.setdefault('distinct', True)
         self.conjoined = kwargs.pop('conjoined', False)
         self.null_value = kwargs.get('null_value', settings.NULL_CHOICE_VALUE)
-        super(MultipleChoiceFilter, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
     def is_noop(self, qs, value):
         """
@@ -342,7 +342,7 @@ class EmployeeFilter(filters.FilterSet):
     """
     def __init__(self, *args, **kwargs):
         self.queryset = kwargs.get('queryset')
-        super(QuerySetRequestMixin, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
     def get_request(self):
         try:
@@ -365,15 +365,15 @@ def field(self):
         if queryset is not None:
             self.extra['queryset'] = queryset
 
-        return super(QuerySetRequestMixin, self).field
+        return super().field
 
 
 class ModelChoiceFilter(QuerySetRequestMixin, ChoiceFilter):
     field_class = ModelChoiceField
 
     def __init__(self, *args, **kwargs):
         kwargs.setdefault('empty_label', settings.EMPTY_CHOICE_LABEL)
-        super(ModelChoiceFilter, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
 
 class ModelMultipleChoiceFilter(QuerySetRequestMixin, MultipleChoiceFilter):
@@ -457,7 +457,7 @@ def __init__(self, *args, **kwargs):
         # empty/null choices not relevant
         kwargs.setdefault('empty_label', None)
         kwargs.setdefault('null_label', None)
-        super(DateRangeFilter, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
     def filter(self, qs, value):
         try:
@@ -490,7 +490,7 @@ def field(self):
         qs = self.model._default_manager.distinct()
         qs = qs.order_by(self.field_name).values_list(self.field_name, flat=True)
         self.extra['choices'] = [(o, o) for o in qs]
-        return super(AllValuesFilter, self).field
+        return super().field
 
 
 class AllValuesMultipleFilter(MultipleChoiceFilter):
@@ -499,7 +499,7 @@ def field(self):
         qs = self.model._default_manager.distinct()
         qs = qs.order_by(self.field_name).values_list(self.field_name, flat=True)
         self.extra['choices'] = [(o, o) for o in qs]
-        return super(AllValuesMultipleFilter, self).field
+        return super().field
 
 
 class BaseCSVFilter(Filter):
@@ -510,7 +510,7 @@ class BaseCSVFilter(Filter):
 
     def __init__(self, *args, **kwargs):
         kwargs.setdefault('help_text', _('Multiple values may be separated by commas.'))
-        super(BaseCSVFilter, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
         class ConcreteCSVField(self.base_field_class, self.field_class):
             pass
@@ -551,15 +551,15 @@ class BaseInFilter(BaseCSVFilter):
 
     def __init__(self, *args, **kwargs):
         kwargs.setdefault('lookup_expr', 'in')
-        super(BaseInFilter, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
 
 class BaseRangeFilter(BaseCSVFilter):
     base_field_class = BaseRangeField
 
     def __init__(self, *args, **kwargs):
         kwargs.setdefault('lookup_expr', 'range')
-        super(BaseRangeFilter, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
 
 class OrderingFilter(BaseCSVFilter, ChoiceFilter):
@@ -607,7 +607,7 @@ def __init__(self, *args, **kwargs):
         kwargs.setdefault('label', _('Ordering'))
         kwargs.setdefault('help_text', '')
         kwargs.setdefault('null_label', None)
-        super(OrderingFilter, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
     def get_ordering_value(self, param):
         descending = param.startswith('-')

django_filters/filterset.py

@@ -54,7 +54,7 @@ class FilterSetMetaclass(type):
     def __new__(cls, name, bases, attrs):
         attrs['declared_filters'] = cls.get_declared_filters(bases, attrs)
 
-        new_class = super(FilterSetMetaclass, cls).__new__(cls, name, bases, attrs)
+        new_class = super().__new__(cls, name, bases, attrs)
         new_class._meta = FilterSetOptions(getattr(new_class, 'Meta', None))
         new_class.base_filters = new_class.get_filters()
 

django_filters/rest_framework/filters.py

@@ -7,4 +7,4 @@ class BooleanFilter(BooleanFilter):
     def __init__(self, *args, **kwargs):
         kwargs.setdefault('widget', BooleanWidget)
 
-        super(BooleanFilter, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)

django_filters/rest_framework/filterset.py

@@ -20,7 +20,7 @@ class FilterSet(filterset.FilterSet):
 
     @property
     def form(self):
-        form = super(FilterSet, self).form
+        form = super().form
 
         if compat.is_crispy():
             from crispy_forms.helper import FormHelper

django_filters/views.py

@@ -94,7 +94,7 @@ def object_filter(request, model=None, queryset=None, template_name=None,
     class ECFilterView(FilterView):
         """Handle the extra_context from the functional object_filter view"""
         def get_context_data(self, **kwargs):
-            context = super(ECFilterView, self).get_context_data(**kwargs)
+            context = super().get_context_data(**kwargs)
             extra_context = self.kwargs.get('extra_context') or {}
             for k, v in extra_context.items():
                 if callable(v):

django_filters/widgets.py

@@ -14,12 +14,12 @@
 
 class LinkWidget(forms.Widget):
     def __init__(self, attrs=None, choices=()):
-        super(LinkWidget, self).__init__(attrs)
+        super().__init__(attrs)
 
         self.choices = choices
 
     def value_from_datadict(self, data, files, name):
-        value = super(LinkWidget, self).value_from_datadict(data, files, name)
+        value = super().value_from_datadict(data, files, name)
         self.data = data
         return value
 
@@ -82,7 +82,7 @@ class SuffixedMultiWidget(forms.MultiWidget):
     suffixes = []
 
     def __init__(self, *args, **kwargs):
-        super(SuffixedMultiWidget, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
         assert len(self.widgets) == len(self.suffixes)
         assert len(self.suffixes) == len(set(self.suffixes))
@@ -91,7 +91,7 @@ def suffixed(self, name, suffix):
         return '_'.join([name, suffix]) if suffix else name
 
     def get_context(self, name, value, attrs):
-        context = super(SuffixedMultiWidget, self).get_context(name, value, attrs)
+        context = super().get_context(name, value, attrs)
         for subcontext, suffix in zip(context['widget']['subwidgets'], self.suffixes):
             subcontext['name'] = self.suffixed(name, suffix)
 
@@ -129,7 +129,7 @@ class RangeWidget(SuffixedMultiWidget):
 
     def __init__(self, attrs=None):
         widgets = (forms.TextInput, forms.TextInput)
-        super(RangeWidget, self).__init__(widgets, attrs)
+        super().__init__(widgets, attrs)
 
     def decompress(self, value):
         if value:
@@ -159,7 +159,7 @@ def __init__(self, attrs=None):
         choices = (('', _('Unknown')),
                    ('true', _('Yes')),
                    ('false', _('No')))
-        super(BooleanWidget, self).__init__(attrs, choices)
+        super().__init__(attrs, choices)
 
     def render(self, name, value, attrs=None):
         try:
@@ -171,7 +171,7 @@ def render(self, name, value, attrs=None):
             }[value]
         except KeyError:
             value = ''
-        return super(BooleanWidget, self).render(name, value, attrs)
+        return super().render(name, value, attrs)
 
     def value_from_datadict(self, data, files, name):
         value = data.get(name, None)
@@ -193,7 +193,7 @@ def _isiterable(self, value):
         return isinstance(value, Iterable) and not isinstance(value, str)
 
     def value_from_datadict(self, data, files, name):
-        value = super(BaseCSVWidget, self).value_from_datadict(data, files, name)
+        value = super().value_from_datadict(data, files, name)
 
         if value is not None:
             if value == '':  # empty value should parse as an empty list
@@ -208,7 +208,7 @@ def render(self, name, value, attrs=None):
         if len(value) <= 1:
             # delegate to main widget (Select, etc...) if not multiple values
             value = value[0] if value else ''
-            return super(BaseCSVWidget, self).render(name, value, attrs)
+            return super().render(name, value, attrs)
 
         # if we have multiple values, we need to force render as a text input
         # (otherwise, the additional values are lost)

tests/models.py

@@ -36,7 +36,7 @@ def get_internal_type(self):
     def formfield(self, **kwargs):
         defaults = {'form_class': forms.GenericIPAddressField}
         defaults.update(kwargs)
-        return super(SubnetMaskField, self).formfield(**defaults)
+        return super().formfield(**defaults)
 
 
 class User(models.Model):

tests/test_filtering.py

@@ -640,7 +640,7 @@ class Meta:
                 fields = ['favorite_books']
 
             def __init__(self, *args, **kwargs):
-                super(F, self).__init__(*args, **kwargs)
+                super().__init__(*args, **kwargs)
                 # This filter has a limited number of choices.
                 self.filters['favorite_books'].extra.update({
                     'queryset': Book.objects.filter(id__in=[1, 2])