old_contents: """Settings used in the development environment."""
  
  import dj_database_url
  
  from base import *
  
  ## Debug configuration
  # See: https://docs.djangoproject.com/en/dev/ref/settings/#debug
  DEBUG = True
  
  # See: https://docs.djangoproject.com/en/dev/ref/settings/#template-debug
  TEMPLATE_DEBUG = DEBUG
  
  
  ## Email configuration
  # See: https://docs.djangoproject.com/en/dev/ref/settings/#email-backend
  EMAIL_BACKEND = 'django.core.mail.backends.console.EmailBackend'
  
  
  ## Database configuration
  # See: https://docs.djangoproject.com/en/dev/ref/settings/#databases
  DATABASES = {
      # Point to a local sqlite3 instance by default.
      'default': dj_database_url.config(default='sqlite:///%s' % project_path('db.sqlite'))
  }
  
  
  ## Middleware configuration
  # See: https://docs.djangoproject.com/en/dev/ref/settings/#middleware-classes
  MIDDLEWARE_CLASSES += (
      'debug_toolbar.middleware.DebugToolbarMiddleware',
  )
  
  
  ## Installed app configuration
  # See: https://docs.djangoproject.com/en/dev/ref/settings/#installed-apps
  INSTALLED_APPS += (
      # See: https://docs.djangoproject.com/en/dev/ref/contrib/admin/
      'django.contrib.admin',
      # https://docs.djangoproject.com/en/dev/ref/contrib/admin/admindocs/
      'django.contrib.admindocs',
  
      # django-debug-toolbar
      'debug_toolbar',
  )
  
  
  ## Internal IPs configuration
  # See: https://docs.djangoproject.com/en/dev/ref/settings/#internal-ips
  INTERNAL_IPS = (
      '127.0.0.1',
  )
  
new_contents: """Settings used in the development environment."""
  
  import dj_database_url
  
  from base import *
  
  ## Debug configuration
  # See: https://docs.djangoproject.com/en/dev/ref/settings/#debug
  DEBUG = True
  
  # See: https://docs.djangoproject.com/en/dev/ref/settings/#template-debug
  TEMPLATE_DEBUG = DEBUG
  
  
  ## Email configuration
  # See: https://docs.djangoproject.com/en/dev/ref/settings/#email-backend
  EMAIL_BACKEND = 'django.core.mail.backends.console.EmailBackend'
  
  
  ## Database configuration
  # See: https://docs.djangoproject.com/en/dev/ref/settings/#databases
  DATABASES = {
      # Point to a local sqlite3 instance by default.
      'default': dj_database_url.config(default='sqlite:///%s' % project_path('db.sqlite'))
  }
  
  
  ## Middleware configuration
  # See: https://docs.djangoproject.com/en/dev/ref/settings/#middleware-classes
  MIDDLEWARE_CLASSES += (
      'debug_toolbar.middleware.DebugToolbarMiddleware',
  )
  
  
  ## Cache configuration
  # See: https://docs.djangoproject.com/en/dev/ref/settings/#caches
  CACHES_DEV = {
      'default': {
          'BACKEND': 'django.core.cache.backends.dummy.DummyCache',
      },
  }
  
  if CACHES is None:
      CACHES = dict()
  CACHES.update(CACHES_DEV)
  
  
  ## Installed app configuration
  # See: https://docs.djangoproject.com/en/dev/ref/settings/#installed-apps
  INSTALLED_APPS += (
      # See: https://docs.djangoproject.com/en/dev/ref/contrib/admin/
      'django.contrib.admin',
      # https://docs.djangoproject.com/en/dev/ref/contrib/admin/admindocs/
      'django.contrib.admindocs',
  
      # django-debug-toolbar
      'debug_toolbar',
  )
  
  
  ## Internal IPs configuration
  # See: https://docs.djangoproject.com/en/dev/ref/settings/#internal-ips
  INTERNAL_IPS = (
      '127.0.0.1',
  )
  
subject: Use the DummyCache backend in the development environment.