old_contents: import os
  from configurations import Settings
  
  
  class Test(Settings):
      SITE_ID = 1
  
      DATABASES = {
          'default': {
              'ENGINE': 'django.db.backends.sqlite3',
              'NAME': os.path.join(os.path.dirname(__file__), 'test.db'),
          }
      }
  
      INSTALLED_APPS = [
          'django.contrib.sessions',
          'django.contrib.contenttypes',
          'django.contrib.sites',
          'django.contrib.auth',
          'django.contrib.admin',
          'configurations.tests',
      ]
  
      ROOT_URLCONF = 'configurations.tests.urls'
  
      TEST_RUNNER = 'discover_runner.DiscoverRunner'
  
      TEST_SETTING = True
  
      _SOMETHING = 'YEAH'
  
      DEBUG = True
  
      @property
      def LALA(self):
          return 1
  
      def LALA2(self):
          return 1
  
      def TEMPLATE_CONTEXT_PROCESSORS(self):
          return Settings.TEMPLATE_CONTEXT_PROCESSORS + (
              'configurations.tests.settings.base.test_callback',)
  
new_contents: import os
  import uuid
  from configurations import Settings
  
  
  class Test(Settings):
      SITE_ID = 1
  
      SECRET_KEY = str(uuid.uuid4())
  
      DATABASES = {
          'default': {
              'ENGINE': 'django.db.backends.sqlite3',
              'NAME': os.path.join(os.path.dirname(__file__), 'test.db'),
          }
      }
  
      INSTALLED_APPS = [
          'django.contrib.sessions',
          'django.contrib.contenttypes',
          'django.contrib.sites',
          'django.contrib.auth',
          'django.contrib.admin',
          'configurations.tests',
      ]
  
      ROOT_URLCONF = 'configurations.tests.urls'
  
      TEST_RUNNER = 'discover_runner.DiscoverRunner'
  
      TEST_SETTING = True
  
      _SOMETHING = 'YEAH'
  
      DEBUG = True
  
      @property
      def LALA(self):
          return 1
  
      def LALA2(self):
          return 1
  
      def TEMPLATE_CONTEXT_PROCESSORS(self):
          return Settings.TEMPLATE_CONTEXT_PROCESSORS + (
              'configurations.tests.settings.base.test_callback',)
  
subject: Set SECRET_KEY in settings.main