.github/dependabot.yml

@@ -1,13 +0,0 @@
-# Keep GitHub Actions up to date with GitHub's Dependabot...
-# https://docs.github.com/en/code-security/dependabot/working-with-dependabot/keeping-your-actions-up-to-date-with-dependabot
-# https://docs.github.com/en/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file#package-ecosystem
-version: 2
-updates:
-  - package-ecosystem: github-actions
-    directory: /
-    groups:
-      github-actions:
-        patterns:
-          - "*"  # Group all Actions updates into a single larger pull request
-    schedule:
-      interval: weekly

.github/workflows/release.yml

@@ -11,22 +11,22 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
         with:
           fetch-depth: 0
 
       - name: Set up Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v4
         with:
-          python-version: 3.x
+          python-version: 3.8
 
       - name: Get pip cache dir
         id: pip-cache
         run: |
-          echo "dir=$(pip cache dir)" >> $GITHUB_OUTPUT
+          echo "::set-output name=dir::$(pip cache dir)"
 
       - name: Cache
-        uses: actions/cache@v4
+        uses: actions/cache@v3
         with:
           path: ${{ steps.pip-cache.outputs.dir }}
           key: release-${{ hashFiles('**/setup.py') }}
@@ -50,4 +50,4 @@ jobs:
         with:
           user: jazzband
           password: ${{ secrets.JAZZBAND_RELEASE_KEY }}
-          repository-url: https://jazzband.co/projects/django-configurations/upload
+          repository_url: https://jazzband.co/projects/django-configurations/upload

.github/workflows/test.yml

@@ -11,15 +11,15 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false
-      max-parallel: 6
+      max-parallel: 5
       matrix:
-        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13', 'pypy-3.10']
+        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11', 'pypy-3.7', 'pypy-3.8', 'pypy-3.9']
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v3
 
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@v4
       with:
         python-version: ${{ matrix.python-version }}
 
@@ -29,7 +29,7 @@ jobs:
         echo "dir=$(pip cache dir)" >> $GITHUB_OUTPUT
 
     - name: Cache
-      uses: actions/cache@v4
+      uses: actions/cache@v3
       with:
         path: ${{ steps.pip-cache.outputs.dir }}
         key:
@@ -47,11 +47,7 @@ jobs:
         tox --verbose
 
     - name: Upload coverage
-      uses: codecov/codecov-action@v5
+      uses: codecov/codecov-action@v3
       with:
-        name: coverage-data-${{ matrix.python-version }}
-        path: ".coverage.*"
-        include-hidden-files: true
-        merge-multiple: true
+        name: Python ${{ matrix.python-version }}
         fail_ci_if_error: true
-        token: ${{ secrets.CODECOV_TOKEN }}

.readthedocs.yaml

@@ -1,9 +1,9 @@
 ---
 version: 2
 build:
-  os: ubuntu-22.04
+  os: ubuntu-20.04
   tools:
-    python: "3.10"
+    python: "3.9"
 python:
   install:
     - requirements: docs/requirements.txt

README.rst

@@ -137,7 +137,7 @@ Or if you are not serving your app via WSGI but ASGI instead, you need to modify
     import os
 
     os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'mysite.settings')
-    os.environ.setdefault('DJANGO_CONFIGURATION', 'Dev')
+    os.environ.setdefault('DJANGO_CONFIGURATION', 'DEV')
 
     from configurations.asgi import get_asgi_application
 

configurations/base.py

@@ -46,10 +46,6 @@ class ConfigurationBase(type):
             # suppressed, as downstream users are expected to make a decision.
             # https://docs.djangoproject.com/en/3.2/releases/3.2/#customizing-type-of-auto-created-primary-keys
             "DEFAULT_AUTO_FIELD",
-            # FORMS_URLFIELD_ASSUME_HTTPS is a transitional setting introduced
-            # in Django 5.0.
-            # https://docs.djangoproject.com/en/5.0/releases/5.0/#id2
-            "FORMS_URLFIELD_ASSUME_HTTPS"
         }
         # PASSWORD_RESET_TIMEOUT_DAYS is deprecated in favor of
         # PASSWORD_RESET_TIMEOUT in Django 3.1
@@ -70,7 +66,7 @@ class ConfigurationBase(type):
         return super().__new__(cls, name, bases, attrs)
 
     def __repr__(self):
-        return "<Configuration '{}.{}'>".format(self.__module__,
+        return "<Configuration '{0}.{1}'>".format(self.__module__,
                                                   self.__name__)
 
 
@@ -107,7 +103,7 @@ class Configuration(metaclass=ConfigurationBase):
         environment variables from a .env file located in the project root
         or provided directory.
 
-        https://wellfire.co/learn/easier-12-factor-django/
+        http://www.wellfireinteractive.com/blog/easier-12-factor-django/
         https://gist.github.com/bennylope/2999704
         """
         # check if the class has DOTENV set whether with a path or None
@@ -119,7 +115,7 @@ class Configuration(metaclass=ConfigurationBase):
 
         # now check if we can access the file since we know we really want to
         try:
-            with open(dotenv) as f:
+            with open(dotenv, 'r') as f:
                 content = f.read()
         except OSError as e:
             raise ImproperlyConfigured("Couldn't read .env file "

configurations/importer.py

@@ -1,4 +1,4 @@
-from importlib.machinery import PathFinder
+import imp
 import logging
 import os
 import sys
@@ -46,12 +46,12 @@ def install(check_options=False):
             return parser
 
         base.BaseCommand.create_parser = create_parser
-        importer = ConfigurationFinder(check_options=check_options)
+        importer = ConfigurationImporter(check_options=check_options)
         sys.meta_path.insert(0, importer)
         installed = True
 
 
-class ConfigurationFinder(PathFinder):
+class ConfigurationImporter:
     modvar = SETTINGS_ENVIRONMENT_VARIABLE
     namevar = CONFIGURATION_ENVIRONMENT_VARIABLE
     error_msg = ("Configuration cannot be imported, "
@@ -70,7 +70,7 @@ class ConfigurationFinder(PathFinder):
             self.announce()
 
     def __repr__(self):
-        return "<ConfigurationFinder for '{}.{}'>".format(self.module,
+        return "<ConfigurationImporter for '{0}.{1}'>".format(self.module,
                                                               self.name)
 
     @property
@@ -121,60 +121,58 @@ class ConfigurationFinder(PathFinder):
             if (self.argv[1] == 'runserver'
                     and os.environ.get('RUN_MAIN') == 'true'):
 
-                message = ("django-configurations version {}, using "
-                           "configuration {}".format(__version__ or "",
+                message = ("django-configurations version {0}, using "
+                           "configuration {1}".format(__version__ or "",
                                                       self.name))
                 self.logger.debug(stylize(message))
 
-    def find_spec(self, fullname, path=None, target=None):
+    def find_module(self, fullname, path=None):
         if fullname is not None and fullname == self.module:
-            spec = super().find_spec(fullname, path, target)
-            if spec is not None:
-                wrap_loader(spec.loader, self.name)
-                return spec
+            module = fullname.rsplit('.', 1)[-1]
+            return ConfigurationLoader(self.name,
+                                       imp.find_module(module, path))
+        return None
+
+
+class ConfigurationLoader:
+
+    def __init__(self, name, location):
+        self.name = name
+        self.location = location
+
+    def load_module(self, fullname):
+        if fullname in sys.modules:
+            mod = sys.modules[fullname]  # pragma: no cover
         else:
-            return None
+            mod = imp.load_module(fullname, *self.location)
+        cls_path = '{0}.{1}'.format(mod.__name__, self.name)
 
+        try:
+            cls = getattr(mod, self.name)
+        except AttributeError as err:  # pragma: no cover
+            reraise(err, "Couldn't find configuration '{0}' "
+                         "in module '{1}'".format(self.name,
+                                                  mod.__package__))
+        try:
+            cls.pre_setup()
+            cls.setup()
+            obj = cls()
+            attributes = uppercase_attributes(obj).items()
+            for name, value in attributes:
+                if callable(value) and not getattr(value, 'pristine', False):
+                    value = value()
+                    # in case a method returns a Value instance we have
+                    # to do the same as the Configuration.setup method
+                    if isinstance(value, Value):
+                        setup_value(mod, name, value)
+                        continue
+                setattr(mod, name, value)
 
-def wrap_loader(loader, class_name):
-    class ConfigurationLoader(loader.__class__):
-        def exec_module(self, module):
-            super().exec_module(module)
+            setattr(mod, 'CONFIGURATION', '{0}.{1}'.format(fullname,
+                                                           self.name))
+            cls.post_setup()
 
-            mod = module
+        except Exception as err:
+            reraise(err, "Couldn't setup configuration '{0}'".format(cls_path))
 
-            cls_path = f'{mod.__name__}.{class_name}'
-
-            try:
-                cls = getattr(mod, class_name)
-            except AttributeError as err:  # pragma: no cover
-                reraise(
-                    err,
-                    (
-                        f"Couldn't find configuration '{class_name}' in "
-                        f"module '{mod.__package__}'"
-                    ),
-                )
-            try:
-                cls.pre_setup()
-                cls.setup()
-                obj = cls()
-                attributes = uppercase_attributes(obj).items()
-                for name, value in attributes:
-                    if callable(value) and not getattr(value, 'pristine', False):
-                        value = value()
-                        # in case a method returns a Value instance we have
-                        # to do the same as the Configuration.setup method
-                        if isinstance(value, Value):
-                            setup_value(mod, name, value)
-                            continue
-                    setattr(mod, name, value)
-
-                setattr(mod, 'CONFIGURATION', '{0}.{1}'.format(module.__name__,
-                                                               class_name))
-                cls.post_setup()
-
-            except Exception as err:
-                reraise(err, f"Couldn't setup configuration '{cls_path}'")
-
-    loader.__class__ = ConfigurationLoader
+        return mod

configurations/utils.py

@@ -29,21 +29,21 @@ def import_by_path(dotted_path, error_prefix=''):
     try:
         module_path, class_name = dotted_path.rsplit('.', 1)
     except ValueError:
-        raise ImproperlyConfigured("{}{} doesn't look like "
+        raise ImproperlyConfigured("{0}{1} doesn't look like "
                                    "a module path".format(error_prefix,
                                                           dotted_path))
     try:
         module = import_module(module_path)
     except ImportError as err:
-        msg = '{}Error importing module {}: "{}"'.format(error_prefix,
+        msg = '{0}Error importing module {1}: "{2}"'.format(error_prefix,
                                                             module_path,
                                                             err)
         raise ImproperlyConfigured(msg).with_traceback(sys.exc_info()[2])
     try:
         attr = getattr(module, class_name)
     except AttributeError:
-        raise ImproperlyConfigured('{}Module "{}" does not define a '
-                                   '"{}" attribute/class'.format(error_prefix,
+        raise ImproperlyConfigured('{0}Module "{1}" does not define a '
+                                   '"{2}" attribute/class'.format(error_prefix,
                                                                   module_path,
                                                                   class_name))
     return attr
@@ -61,7 +61,7 @@ def reraise(exc, prefix=None, suffix=None):
         suffix = ''
     elif not (suffix.startswith('(') and suffix.endswith(')')):
         suffix = '(' + suffix + ')'
-    exc.args = (f'{prefix} {args[0]} {suffix}',) + args[1:]
+    exc.args = ('{0} {1} {2}'.format(prefix, args[0], suffix),) + args[1:]
     raise exc
 
 

configurations/values.py

@@ -92,7 +92,7 @@ class Value:
         else:
             environ_name = name.upper()
         if self.environ_prefix:
-            environ_name = f'{self.environ_prefix}_{environ_name}'
+            environ_name = '{0}_{1}'.format(self.environ_prefix, environ_name)
         return environ_name
 
     def setup(self, name):
@@ -102,8 +102,8 @@ class Value:
             if full_environ_name in os.environ:
                 value = self.to_python(os.environ[full_environ_name])
             elif self.environ_required:
-                raise ValueError('Value {!r} is required to be set as the '
-                                 'environment variable {!r}'
+                raise ValueError('Value {0!r} is required to be set as the '
+                                 'environment variable {1!r}'
                                  .format(name, full_environ_name))
         self.value = value
         return value
@@ -128,7 +128,7 @@ class BooleanValue(Value):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
         if self.default not in (True, False):
-            raise ValueError('Default value {!r} is not a '
+            raise ValueError('Default value {0!r} is not a '
                              'boolean value'.format(self.default))
 
     def to_python(self, value):
@@ -139,7 +139,7 @@ class BooleanValue(Value):
             return False
         else:
             raise ValueError('Cannot interpret '
-                             'boolean value {!r}'.format(value))
+                             'boolean value {0!r}'.format(value))
 
 
 class CastingMixin:
@@ -152,12 +152,12 @@ class CastingMixin:
             try:
                 self._caster = import_string(self.caster)
             except ImportError as err:
-                msg = f"Could not import {self.caster!r}"
+                msg = "Could not import {!r}".format(self.caster)
                 raise ImproperlyConfigured(msg) from err
         elif callable(self.caster):
             self._caster = self.caster
         else:
-            error = 'Cannot use caster of {} ({!r})'.format(self,
+            error = 'Cannot use caster of {0} ({1!r})'.format(self,
                                                               self.caster)
             raise ValueError(error)
         try:
@@ -345,13 +345,13 @@ class ValidationMixin:
             try:
                 self._validator = import_string(self.validator)
             except ImportError as err:
-                msg = f"Could not import {self.validator!r}"
+                msg = "Could not import {!r}".format(self.validator)
                 raise ImproperlyConfigured(msg) from err
         elif callable(self.validator):
             self._validator = self.validator
         else:
             raise ValueError('Cannot use validator of '
-                             '{} ({!r})'.format(self, self.validator))
+                             '{0} ({1!r})'.format(self, self.validator))
         if self.default:
             self.to_python(self.default)
 
@@ -397,7 +397,7 @@ class PathValue(Value):
         value = super().setup(name)
         value = os.path.expanduser(value)
         if self.check_exists and not os.path.exists(value):
-            raise ValueError(f'Path {value!r} does not exist.')
+            raise ValueError('Path {0!r} does not exist.'.format(value))
         return os.path.abspath(value)
 
 
@@ -414,7 +414,7 @@ class SecretValue(Value):
     def setup(self, name):
         value = super().setup(name)
         if not value:
-            raise ValueError(f'Secret value {name!r} is not set')
+            raise ValueError('Secret value {0!r} is not set'.format(name))
         return value
 
 

configurations/version.py

@@ -1,4 +1,7 @@
-from importlib.metadata import PackageNotFoundError, version
+try:
+    from importlib.metadata import PackageNotFoundError, version
+except ImportError:
+    from importlib_metadata import PackageNotFoundError, version
 
 try:
     __version__ = version("django-configurations")

docs/changes.rst

@@ -3,30 +3,6 @@
 Changelog
 ---------
 
-Unreleased
-^^^^^^^^^^
-
-- Prevent warning about ``FORMS_URLFIELD_ASSUME_HTTPS`` on Django 5.0.
-
-v2.5.1 (2023-11-30)
-^^^^^^^^^^^^^^^^^^^
-
-- Add compatibility with Python 3.12
-
-v2.5 (2023-10-20)
-^^^^^^^^^^^^^^^^^
-
-- Update Github actions and fix pipeline warnings
-- Add compatibility with Django 5.0
-- **BACKWARD INCOMPATIBLE** Drop compatibility for Django 4.0
-- **BACKWARD INCOMPATIBLE** Drop compatibility for Python 3.7 and PyPy < 3.10
-
-v2.4.2 (2023-09-27)
-^^^^^^^^^^^^^^^^^^^
-
-- Replace imp (due for removal in Python 3.12) with importlib
-- Test on PyPy 3.10.
-
 v2.4.1 (2023-04-04)
 ^^^^^^^^^^^^^^^^^^^
 

setup.py

@@ -31,8 +31,9 @@ setup(
     },
     install_requires=[
         'django>=3.2',
+        'importlib-metadata;python_version<"3.8"',
     ],
-    python_requires='>=3.9, <4.0',
+    python_requires='>=3.7, <4.0',
     extras_require={
         'cache': ['django-cache-url'],
         'database': ['dj-database-url'],
@@ -49,21 +50,20 @@ setup(
         'Development Status :: 5 - Production/Stable',
         'Framework :: Django',
         'Framework :: Django :: 3.2',
+        'Framework :: Django :: 4.0',
         'Framework :: Django :: 4.1',
         'Framework :: Django :: 4.2',
-        'Framework :: Django :: 5.0',
-        'Framework :: Django :: 5.1',
         'Intended Audience :: Developers',
         'License :: OSI Approved :: BSD License',
         'Operating System :: OS Independent',
         'Programming Language :: Python',
         'Programming Language :: Python :: 3',
         'Programming Language :: Python :: 3 :: Only',
+        'Programming Language :: Python :: 3.7',
+        'Programming Language :: Python :: 3.8',
         'Programming Language :: Python :: 3.9',
         'Programming Language :: Python :: 3.10',
         'Programming Language :: Python :: 3.11',
-        'Programming Language :: Python :: 3.12',
-        'Programming Language :: Python :: 3.13',
         'Programming Language :: Python :: Implementation :: PyPy',
         'Topic :: Utilities',
     ],

tests/settings/dot_env.py

@@ -6,6 +6,3 @@ class DotEnvConfiguration(Configuration):
     DOTENV = 'test_project/.env'
 
     DOTENV_VALUE = values.Value()
-
-    def DOTENV_VALUE_METHOD(self):
-        return values.Value(environ_name="DOTENV_VALUE")

tests/settings/error.py

@@ -1,8 +0,0 @@
-from configurations import Configuration
-
-
-class ErrorConfiguration(Configuration):
-
-    @classmethod
-    def pre_setup(cls):
-        raise ValueError("Error in pre_setup")

tests/settings/main.py

@@ -1,7 +1,9 @@
 import os
 import uuid
+import django
 
 from configurations import Configuration, pristinemethod
+from configurations.values import BooleanValue
 
 
 class Test(Configuration):
@@ -9,6 +11,8 @@ class Test(Configuration):
         os.path.join(os.path.dirname(
             os.path.abspath(__file__)), os.pardir))
 
+    ENV_LOADED = BooleanValue(False)
+
     DEBUG = True
 
     SITE_ID = 1
@@ -32,6 +36,9 @@ class Test(Configuration):
 
     ROOT_URLCONF = 'tests.urls'
 
+    if django.VERSION[:2] < (1, 6):
+        TEST_RUNNER = 'discover_runner.DiscoverRunner'
+
     @property
     def ALLOWED_HOSTS(self):
         allowed_hosts = super().ALLOWED_HOSTS[:]

tests/test_env.py

@@ -11,5 +11,4 @@ class DotEnvLoadingTests(TestCase):
     def test_env_loaded(self):
         from tests.settings import dot_env
         self.assertEqual(dot_env.DOTENV_VALUE, 'is set')
-        self.assertEqual(dot_env.DOTENV_VALUE_METHOD, 'is set')
         self.assertEqual(dot_env.DOTENV_LOADED, dot_env.DOTENV)

tests/test_error.py

@@ -1,22 +0,0 @@
-import os
-from django.test import TestCase
-from unittest.mock import patch
-
-
-class ErrorTests(TestCase):
-
-    @patch.dict(os.environ, clear=True,
-                DJANGO_CONFIGURATION='ErrorConfiguration',
-                DJANGO_SETTINGS_MODULE='tests.settings.error')
-    def test_env_loaded(self):
-        with self.assertRaises(ValueError) as cm:
-            from tests.settings import error  # noqa: F401
-
-        self.assertIsInstance(cm.exception, ValueError)
-        self.assertEqual(
-            cm.exception.args,
-            (
-                "Couldn't setup configuration "
-                "'tests.settings.error.ErrorConfiguration':  Error in pre_setup ",
-            )
-        )

tests/test_main.py

@@ -7,7 +7,7 @@ from django.core.exceptions import ImproperlyConfigured
 
 from unittest.mock import patch
 
-from configurations.importer import ConfigurationFinder
+from configurations.importer import ConfigurationImporter
 
 ROOT_DIR = os.path.dirname(os.path.dirname(__file__))
 TEST_PROJECT_DIR = os.path.join(ROOT_DIR, 'test_project')
@@ -42,14 +42,12 @@ class MainTests(TestCase):
 
     @patch.dict(os.environ, clear=True, DJANGO_CONFIGURATION='Test')
     def test_empty_module_var(self):
-        with self.assertRaises(ImproperlyConfigured):
-            ConfigurationFinder()
+        self.assertRaises(ImproperlyConfigured, ConfigurationImporter)
 
     @patch.dict(os.environ, clear=True,
                 DJANGO_SETTINGS_MODULE='tests.settings.main')
     def test_empty_class_var(self):
-        with self.assertRaises(ImproperlyConfigured):
-            ConfigurationFinder()
+        self.assertRaises(ImproperlyConfigured, ConfigurationImporter)
 
     def test_global_settings(self):
         from configurations.base import Configuration
@@ -72,21 +70,21 @@ class MainTests(TestCase):
                 DJANGO_SETTINGS_MODULE='tests.settings.main',
                 DJANGO_CONFIGURATION='Test')
     def test_initialization(self):
-        finder = ConfigurationFinder()
-        self.assertEqual(finder.module, 'tests.settings.main')
-        self.assertEqual(finder.name, 'Test')
+        importer = ConfigurationImporter()
+        self.assertEqual(importer.module, 'tests.settings.main')
+        self.assertEqual(importer.name, 'Test')
         self.assertEqual(
-            repr(finder),
-            "<ConfigurationFinder for 'tests.settings.main.Test'>")
+            repr(importer),
+            "<ConfigurationImporter for 'tests.settings.main.Test'>")
 
     @patch.dict(os.environ, clear=True,
                 DJANGO_SETTINGS_MODULE='tests.settings.inheritance',
                 DJANGO_CONFIGURATION='Inheritance')
     def test_initialization_inheritance(self):
-        finder = ConfigurationFinder()
-        self.assertEqual(finder.module,
+        importer = ConfigurationImporter()
+        self.assertEqual(importer.module,
                          'tests.settings.inheritance')
-        self.assertEqual(finder.name, 'Inheritance')
+        self.assertEqual(importer.name, 'Inheritance')
 
     @patch.dict(os.environ, clear=True,
                 DJANGO_SETTINGS_MODULE='tests.settings.main',
@@ -95,12 +93,12 @@ class MainTests(TestCase):
                                 '--settings=tests.settings.main',
                                 '--configuration=Test'])
     def test_configuration_option(self):
-        finder = ConfigurationFinder(check_options=False)
-        self.assertEqual(finder.module, 'tests.settings.main')
-        self.assertEqual(finder.name, 'NonExisting')
-        finder = ConfigurationFinder(check_options=True)
-        self.assertEqual(finder.module, 'tests.settings.main')
-        self.assertEqual(finder.name, 'Test')
+        importer = ConfigurationImporter(check_options=False)
+        self.assertEqual(importer.module, 'tests.settings.main')
+        self.assertEqual(importer.name, 'NonExisting')
+        importer = ConfigurationImporter(check_options=True)
+        self.assertEqual(importer.module, 'tests.settings.main')
+        self.assertEqual(importer.name, 'Test')
 
     def test_configuration_argument_in_cli(self):
         """

tests/test_values.py

@@ -34,7 +34,7 @@ class ValueTests(TestCase):
 
     def test_value_with_default(self):
         value = Value('default', environ=False)
-        self.assertEqual(type(value), str)
+        self.assertEqual(type(value), type('default'))
         self.assertEqual(value, 'default')
         self.assertEqual(str(value), 'default')
 
@@ -44,17 +44,17 @@ class ValueTests(TestCase):
         with env(DJANGO_TEST='override'):
             self.assertEqual(value.setup('TEST'), 'default')
             value = Value(environ_name='TEST')
-            self.assertEqual(type(value), str)
+            self.assertEqual(type(value), type('override'))
             self.assertEqual(value, 'override')
             self.assertEqual(str(value), 'override')
-            self.assertEqual(f'{value}', 'override')
+            self.assertEqual('{0}'.format(value), 'override')
             self.assertEqual('%s' % value, 'override')
 
             value = Value(environ_name='TEST', late_binding=True)
             self.assertEqual(type(value), Value)
             self.assertEqual(value.value, 'override')
             self.assertEqual(str(value), 'override')
-            self.assertEqual(f'{value}', 'override')
+            self.assertEqual('{0}'.format(value), 'override')
             self.assertEqual('%s' % value, 'override')
 
             self.assertEqual(repr(value), repr('override'))
@@ -373,23 +373,17 @@ class ValueTests(TestCase):
         value = DatabaseURLValue()
         self.assertEqual(value.default, {})
         with env(DATABASE_URL='sqlite://'):
-            settings_value = value.setup('DATABASE_URL')
-            # Compare the embedded dicts in the "default" entry so that the difference can be seen if
-            # it fails ... DatabaseURLValue(|) uses an external app that can add additional entries
-            self.assertDictEqual(
-                {
+            self.assertEqual(value.setup('DATABASE_URL'), {
+                'default': {
                     'CONN_HEALTH_CHECKS': False,
                     'CONN_MAX_AGE': 0,
-                    'DISABLE_SERVER_SIDE_CURSORS': False,
                     'ENGINE': 'django.db.backends.sqlite3',
                     'HOST': '',
                     'NAME': ':memory:',
                     'PASSWORD': '',
                     'PORT': '',
                     'USER': '',
-                },
-                settings_value['default']
-            )
+                }})
 
     def test_database_url_additional_args(self):
 

tox.ini

@@ -3,22 +3,23 @@ skipsdist = true
 usedevelop = true
 minversion = 1.8
 envlist =
-    py311-checkqa
+    py37-checkqa
     docs
-    py{39}-dj{32,41,42}
-    py{310,py310}-dj{32,41,42,50,main}
-    py{311}-dj{41,42,50,51,main}
-    py{312}-dj{50,51,main}
-    py{313}-dj{50,51,main}
+    py{37,py37}-dj{32}
+    py{38,py38,39,py39}-dj{32,40,41,42}
+    py{310}-dj{32,40,41,42,main}
+    py{311}-dj{41,42,main}
 
 [gh-actions]
 python =
+    3.7: py37,flake8,readme
+    3.8: py38
     3.9: py39
     3.10: py310
-    3.11: py311,flake8,readme
-    3.12: py312
-    3.13: py313
-    pypy-3.10: pypy310
+    3.11: py311
+    pypy-3.7: pypy37
+    pypy-3.8: pypy38
+    pypy-3.9: pypy39
 
 [testenv]
 usedevelop = true
@@ -28,15 +29,10 @@ setenv =
     COVERAGE_PROCESS_START = {toxinidir}/setup.cfg
 deps =
     dj32: django~=3.2.9
+    dj40: django~=4.0.0
     dj41: django~=4.1.3
     dj42: django~=4.2.0
-    dj50: django~=5.0.0
-    dj51: django~=5.1.0
     djmain: https://github.com/django/django/archive/main.tar.gz
-    py312: setuptools
-    py312: wheel
-    py313: setuptools
-    py313: wheel
     coverage
     coverage_enable_subprocess
 extras = testing
@@ -47,7 +43,7 @@ commands =
     coverage report -m --skip-covered
     coverage xml
 
-[testenv:py311-checkqa]
+[testenv:py37-checkqa]
 commands =
     flake8 {toxinidir}
     check-manifest -v