Drop support for EOL Python and Django

.github/workflows/test.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [2.7, 3.5, 3.6, 3.7, 3.8, 3.9]
+        python-version: [3.6, 3.7, 3.8, 3.9]
 
     steps:
     - uses: actions/checkout@v1

README.rst

@@ -26,7 +26,7 @@ For release notes, see `Changelog <https://raw.githubusercontent.com/modlinltd/d
 Requirements
 ============
 
--  Django >= 1.9 (Django 1.9 - 3.1 on Python 2/3/PyPy3)
+-  Django 2.2, >= 3.1 on Python 3.6+/PyPy3
 -  simplejson >= 3.6.5, < 4
 
 

advanced_filters/admin.py

@@ -5,17 +5,11 @@
 from django.contrib.admin.utils import unquote
 from django.http import HttpResponseRedirect
 from django.shortcuts import resolve_url
+from django.utils.translation import gettext_lazy as _
 
 from .forms import AdvancedFilterForm
 from .models import AdvancedFilter
 
-# django < 1.9 support
-from django import VERSION
-if VERSION >= (2, 0):
-    from django.utils.translation import gettext_lazy as _
-else:
-    from django.utils.translation import ugettext_lazy as _
-
 
 logger = logging.getLogger('advanced_filters.admin')
 
@@ -28,16 +22,20 @@ class AdvancedListFilters(admin.SimpleListFilter):
 
     def lookups(self, request, model_admin):
         if not model_admin:
-            raise Exception('Cannot use AdvancedListFilters without a '
-                            'model_admin')
-        model_name = "%s.%s" % (model_admin.model._meta.app_label,
-                                model_admin.model._meta.object_name)
+            raise Exception(
+                "Cannot use AdvancedListFilters without a model_admin"
+            )
+        model_name = (
+            f"{model_admin.model._meta.app_label}."
+            f"{model_admin.model._meta.object_name}"
+        )
         return AdvancedFilter.objects.filter_by_user(request.user).filter(
             model=model_name).values_list('id', 'title')
 
     def queryset(self, request, queryset):
         if self.value():
             filters = AdvancedFilter.objects.filter(id=self.value())
+            advfilter = None
             if hasattr(filters, 'first'):
                 advfilter = filters.first()
             if not advfilter:
@@ -49,14 +47,17 @@ def queryset(self, request, queryset):
         return queryset
 
 
-class AdminAdvancedFiltersMixin(object):
+class AdminAdvancedFiltersMixin:
     """ Generic AdvancedFilters mixin """
     advanced_change_list_template = "admin/advanced_filters.html"
     advanced_filter_form = AdvancedFilterForm
 
     def __init__(self, *args, **kwargs):
-        super(AdminAdvancedFiltersMixin, self).__init__(*args, **kwargs)
-        self.original_change_list_template = "admin/change_list.html"
+        super().__init__(*args, **kwargs)
+        if self.change_list_template:
+            self.original_change_list_template = self.change_list_template
+        else:
+            self.original_change_list_template = "admin/change_list.html"
         self.change_list_template = self.advanced_change_list_template
         # add list filters to filters
         self.list_filter = (AdvancedListFilters,) + tuple(self.list_filter)
@@ -103,8 +104,7 @@ def changelist_view(self, request, extra_context=None):
             if response:
                 return response
 
-        return super(AdminAdvancedFiltersMixin, self
-                     ).changelist_view(request, extra_context=extra_context)
+        return super().changelist_view(request, extra_context=extra_context)
 
 
 class AdvancedFilterAdmin(admin.ModelAdmin):
@@ -123,20 +123,20 @@ def save_model(self, request, new_object, *args, **kwargs):
         if new_object and not new_object.pk:
             new_object.created_by = request.user
 
-        super(AdvancedFilterAdmin, self).save_model(
+        super().save_model(
             request, new_object, *args, **kwargs)
 
     def change_view(self, request, object_id, form_url='', extra_context=None):
-        orig_response = super(AdvancedFilterAdmin, self).change_view(
+        orig_response = super().change_view(
             request, object_id, form_url, extra_context)
         if '_save_goto' in request.POST:
             obj = self.get_object(request, unquote(object_id))
             if obj:
                 app, model = obj.model.split('.')
-                path = resolve_url('admin:%s_%s_changelist' % (
+                path = resolve_url('admin:{}_{}_changelist'.format(
                     app, model.lower()))
                 url = "{path}{qparams}".format(
-                    path=path, qparams="?_afilter={id}".format(id=object_id))
+                    path=path, qparams=f"?_afilter={object_id}")
                 return HttpResponseRedirect(url)
         return orig_response
 
@@ -147,18 +147,18 @@ def user_has_permission(user):
 
     def get_queryset(self, request):
         if self.user_has_permission(request.user):
-            return super(AdvancedFilterAdmin, self).get_queryset(request)
+            return super().get_queryset(request)
         else:
             return self.model.objects.filter_by_user(request.user)
 
     def has_change_permission(self, request, obj=None):
         if obj is None:
-            return super(AdvancedFilterAdmin, self).has_change_permission(request)
+            return super().has_change_permission(request)
         return self.user_has_permission(request.user) or obj in self.model.objects.filter_by_user(request.user)
 
     def has_delete_permission(self, request, obj=None):
         if obj is None:
-            return super(AdvancedFilterAdmin, self).has_delete_permission(request)
+            return super().has_delete_permission(request)
         return self.user_has_permission(request.user) or obj in self.model.objects.filter_by_user(request.user)
 
 

advanced_filters/form_helpers.py

@@ -3,8 +3,6 @@
 
 from django import forms
 
-import six
-
 logger = logging.getLogger('advanced_filters.form_helpers')
 
 extra_spaces_pattern = re.compile(r'\s+')
@@ -29,7 +27,7 @@ def to_python(self, value):
         >>> assert field.to_python('and,me') == '(and|me)'
         >>> assert field.to_python('and,me;too') == '(and|me;too)'
         """
-        res = super(VaryingTypeCharField, self).to_python(value)
+        res = super().to_python(value)
         split_res = res.split(self._default_separator)
         if not res or len(split_res) < 2:
             return res.strip()
@@ -40,7 +38,7 @@ def to_python(self, value):
         return res
 
 
-class CleanWhiteSpacesMixin(object):
+class CleanWhiteSpacesMixin:
     """
     This mixin, when added to any form subclass, adds a clean method which
     strips repeating spaces in and around each string value of "clean_data".
@@ -55,9 +53,9 @@ def clean(self):
         >>> assert form.is_valid()
         >>> assert form.cleaned_data == {'some_field': 'a weird value'}
         """
-        cleaned_data = super(CleanWhiteSpacesMixin, self).clean()
+        cleaned_data = super().clean()
         for k in self.cleaned_data:
-            if isinstance(self.cleaned_data[k], six.string_types):
+            if isinstance(self.cleaned_data[k], str):
                 cleaned_data[k] = re.sub(extra_spaces_pattern, ' ',
                                          self.cleaned_data[k] or '').strip()
         return cleaned_data

advanced_filters/forms.py

@@ -15,22 +15,14 @@
 from django.db.models.fields import DateField
 from django.forms.formsets import formset_factory, BaseFormSet
 from django.utils.functional import cached_property
-from six.moves import range, reduce
+from functools import reduce
 from django.utils.text import capfirst
+from django.utils.translation import gettext_lazy as _
 
 from .models import AdvancedFilter
 from .form_helpers import CleanWhiteSpacesMixin,  VaryingTypeCharField
 
-# django < 1.9 support
-from django import VERSION
-if VERSION >= (2, 0):
-    from django.utils.translation import gettext_lazy as _
-else:
-    from django.utils.translation import ugettext_lazy as _
 
-
-# django < 1.9 support
-USE_VENDOR_DIR = VERSION >= (1, 9)
 logger = logging.getLogger('advanced_filters.forms')
 
 # select2 location can be modified via settings
@@ -84,7 +76,7 @@ def _build_field_choices(self, fields):
         Iterate over passed model fields tuple and update initial choices.
         """
         return tuple(sorted(
-            [(fquery, capfirst(fname)) for fquery, fname in fields.items()],
+            ((fquery, capfirst(fname)) for fquery, fname in fields.items()),
             key=lambda f: f[1].lower())
         ) + self.FIELD_CHOICES
 
@@ -166,7 +158,7 @@ def set_range_value(self, data):
         data['value'] = (dtfrom, dtto)
 
     def clean(self):
-        cleaned_data = super(AdvancedFilterQueryForm, self).clean()
+        cleaned_data = super().clean()
         if cleaned_data.get('operator') == "range":
             if ('value_from' in cleaned_data and
                     'value_to' in cleaned_data):
@@ -184,7 +176,7 @@ def make_query(self, *args, **kwargs):
         return query
 
     def __init__(self, model_fields={}, *args, **kwargs):
-        super(AdvancedFilterQueryForm, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
         self.FIELD_CHOICES = self._build_field_choices(model_fields)
         self.fields['field'].choices = self.FIELD_CHOICES
         if not self.fields['field'].initial:
@@ -198,13 +190,13 @@ class AdvancedFilterFormSet(BaseFormSet):
 
     def __init__(self, *args, **kwargs):
         self.model_fields = kwargs.pop('model_fields', {})
-        super(AdvancedFilterFormSet, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
         if self.forms:
             form = self.forms[0]
             self.fields = form.visible_fields()
 
     def get_form_kwargs(self, index):
-        kwargs = super(AdvancedFilterFormSet, self).get_form_kwargs(index)
+        kwargs = super().get_form_kwargs(index)
         kwargs['model_fields'] = self.model_fields
         return kwargs
 
@@ -234,7 +226,7 @@ class Meta:
 
     class Media:
         required_js = [
-            'admin/js/%sjquery.min.js' % ('vendor/jquery/' if USE_VENDOR_DIR else ''),
+            'admin/js/vendor/jquery/jquery.min.js',
             'advanced-filters/jquery_adder.js',
             'orig_inlines%s.js' % ('' if settings.DEBUG else '.min'),
             'magnific-popup/jquery.magnific-popup.js',
@@ -294,7 +286,7 @@ def __init__(self, *args, **kwargs):
         self._filter_fields = filter_fields or getattr(
             model_admin, 'advanced_filter_fields', ())
 
-        super(AdvancedFilterForm, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
         # populate existing or empty forms formset
         data = None
@@ -305,15 +297,15 @@ def __init__(self, *args, **kwargs):
         self.initialize_form(instance, self._model, data, extra_form)
 
     def clean(self):
-        cleaned_data = super(AdvancedFilterForm, self).clean()
+        cleaned_data = super().clean()
         if not self.fields_formset.is_valid():
             logger.debug(
                 "Errors validating advanced query filters: %s",
                 pformat([(f.errors, f.non_field_errors())
                          for f in self.fields_formset.forms]))
             raise forms.ValidationError("Error validating filter forms")
-        cleaned_data['model'] = "%s.%s" % (self._model._meta.app_label,
-                                           self._model._meta.object_name)
+        cleaned_data['model'] = "{}.{}".format(self._model._meta.app_label,
+                                               self._model._meta.object_name)
         return cleaned_data
 
     @property
@@ -364,4 +356,4 @@ def initialize_form(self, instance, model, data=None, extra=None):
     def save(self, commit=True):
         self.instance.query = self.generate_query()
         self.instance.model = self.cleaned_data.get('model')
-        return super(AdvancedFilterForm, self).save(commit)
+        return super().save(commit)

advanced_filters/migrations/0001_initial.py

@@ -1,6 +1,4 @@
-# -*- coding: utf-8 -*-
 # Generated by Django 1.9.4 on 2016-03-07 23:02
-from __future__ import unicode_literals
 
 from django.conf import settings
 from django.db import migrations, models

advanced_filters/migrations/0002_advancedfilter_created_at.py

@@ -1,6 +1,3 @@
-# -*- coding: utf-8 -*-
-from __future__ import unicode_literals
-
 from django.db import models, migrations
 
 

advanced_filters/mixins.py

@@ -16,13 +16,8 @@
     from django.utils.encoding import force_text as force_string
 from django.views.decorators.csrf import csrf_exempt
 
-try:
-    from django.utils import six
-except ImportError:
-    import six
-
 
-class CsrfExemptMixin(object):
+class CsrfExemptMixin:
     """
     Exempts the view from CSRF requirements.
     NOTE:
@@ -31,10 +26,10 @@ class CsrfExemptMixin(object):
 
     @method_decorator(csrf_exempt)
     def dispatch(self, *args, **kwargs):
-        return super(CsrfExemptMixin, self).dispatch(*args, **kwargs)
+        return super().dispatch(*args, **kwargs)
 
 
-class AccessMixin(object):
+class AccessMixin:
     """
     'Abstract' mixin that gives access mixins the same customizable
     functionality.
@@ -104,11 +99,11 @@ def dispatch(self, request, *args, **kwargs):
         if not request.user.is_staff:
             return self.handle_no_permission(request)
 
-        return super(StaffuserRequiredMixin, self).dispatch(
+        return super().dispatch(
             request, *args, **kwargs)
 
 
-class JSONResponseMixin(object):
+class JSONResponseMixin:
     """
     A mixin that allows you to easily serialize simple data such as a dict or
     Django models.
@@ -120,7 +115,7 @@ class JSONResponseMixin(object):
     def get_content_type(self):
         if (self.content_type is not None and
             not isinstance(self.content_type,
-                           (six.string_types, six.text_type))):
+                           ((str,), str))):
             raise ImproperlyConfigured(
                 '{0} is missing a content type. Define {0}.content_type, '
                 'or override {0}.get_content_type().'.format(

advanced_filters/models.py

@@ -1,16 +1,10 @@
 from django.conf import settings
 from django.db import models
 from django.db.models import Q
+from django.utils.translation import gettext_lazy as _
 
 from .q_serializer import QSerializer
 
-# django < 1.9 support
-from django import VERSION
-if VERSION >= (2, 0):
-    from django.utils.translation import gettext_lazy as _
-else:
-    from django.utils.translation import ugettext_lazy as _
-
 
 class UserLookupManager(models.Manager):
     def filter_by_user(self, user):

advanced_filters/q_serializer.py

@@ -3,7 +3,6 @@
 import base64
 import time
 
-import six
 from django.db.models import Q
 from django.core.serializers.base import SerializationError
 
@@ -25,7 +24,7 @@ def dt2ts(obj):
     return time.mktime(obj.timetuple()) if isinstance(obj, date) else obj
 
 
-class QSerializer(object):
+class QSerializer:
     """
     A Q object serializer base class. Pass base64=True when initializing
     to Base-64 encode/decode the returned/passed string.
@@ -121,7 +120,7 @@ def dumps(self, obj):
             raise SerializationError
         string = json.dumps(self.serialize(obj), default=dt2ts)
         if self.b64_enabled:
-            return base64.b64encode(six.b(string)).decode("utf-8")
+            return base64.b64encode(string.encode("latin-1")).decode("utf-8")
         return string
 
     def loads(self, string, raw=False):