new_contents: """
  Django settings for maili project.
  
  Generated by 'django-admin startproject' using Django 1.8.5.
  
  For more information on this file, see
  https://docs.djangoproject.com/en/1.8/topics/settings/
  
  For the full list of settings and their values, see
  https://docs.djangoproject.com/en/1.8/ref/settings/
  """
  
  # Build paths inside the project like this: os.path.join(BASE_DIR, ...)
  import os
  
  BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
  
  
  # Quick-start development settings - unsuitable for production
  # See https://docs.djangoproject.com/en/1.8/howto/deployment/checklist/
  
  # SECURITY WARNING: keep the secret key used in production secret!
  SECRET_KEY = '*&t!&ss7#j@dfb76a%x8#pgl-naf6zkay(e10m12k6n!q+z1f9'
  
  # SECURITY WARNING: don't run with debug turned on in production!
  DEBUG = True
  
  ALLOWED_HOSTS = ["*"]
  
  
  # Application definition
  
  INSTALLED_APPS = (
      'django.contrib.admin',
      'django.contrib.auth',
      'django.contrib.contenttypes',
      'django.contrib.sessions',
      'django.contrib.messages',
      'django.contrib.staticfiles',
      'rest_framework',
      'group',
      'account',
      'rest_framework_swagger',
      'feed',
      'relation',
      'scope',
      'django_nose',
  )
  
  MIDDLEWARE_CLASSES = (
      'django.contrib.sessions.middleware.SessionMiddleware',
      'django.middleware.common.CommonMiddleware',
      'django.middleware.csrf.CsrfViewMiddleware',
      'django.contrib.auth.middleware.AuthenticationMiddleware',
      'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
      'django.contrib.messages.middleware.MessageMiddleware',
      'django.middleware.clickjacking.XFrameOptionsMiddleware',
      'django.middleware.security.SecurityMiddleware',
  )
  
  ROOT_URLCONF = 'maili.urls'
  
  TEMPLATES = [
      {
          'BACKEND': 'django.template.backends.django.DjangoTemplates',
          'DIRS': [],
          'APP_DIRS': True,
          'OPTIONS': {
              'context_processors': [
                  'django.template.context_processors.debug',
                  'django.template.context_processors.request',
                  'django.contrib.auth.context_processors.auth',
                  'django.contrib.messages.context_processors.messages',
              ],
          },
      },
  ]
  
  WSGI_APPLICATION = 'maili.wsgi.application'
  
  
  # Database
  # https://docs.djangoproject.com/en/1.8/ref/settings/#databases
  
  test_db = {
      'ENGINE': 'django.db.backends.sqlite3',
      'NAME': 'test_db'
  }
  
  
  DATABASES = {
      'default': test_db
  }
  
  # Internationalization
  # https://docs.djangoproject.com/en/1.8/topics/i18n/
  
  LANGUAGE_CODE = 'en-us'
  
  TIME_ZONE = 'Asia/Shanghai'
  
  USE_I18N = True
  
  USE_L10N = True
  
  USE_TZ = True
  
  
  # Static files (CSS, JavaScript, Images)
  # https://docs.djangoproject.com/en/1.8/howto/static-files/
  
  STATIC_URL = '/static/'
  
  REST_FRAMEWORK = {
      'DEFAULT_PERMISSION_CLASSES': ('rest_framework.permissions.AllowAny',),
      'PAGE_SIZE': 10
  }
  
  LOGGING = {
      'version': 1,
      'disable_existing_loggers': False,
      'formatters': {
          'verbose': {
              'format':
              '%(levelname)s %(asctime)s %(module)s %(process)d \
               %(thread)d %(message)s'
          },
          'simple': {
              'format': '%(levelname)s %(message)s'
          },
      },
      'handlers': {
          'django': {
              'level': 'ERROR',
              'class': 'logging.handlers.RotatingFileHandler',
              'filename': os.path.join(BASE_DIR, 'logs/error.log'),
              'maxBytes': '16777216',  # 16megabytes
              'formatter': 'verbose'
          }
      }
  }
  
  # Use nose to run all tests
  TEST_RUNNER = 'django_nose.NoseTestSuiteRunner'
  # Tell nose to measure coverage on the 'foo' and 'bar' apps
  NOSE_ARGS = [
      '--with-coverage',
      '--cover-package=foo,bar',
  ]
  
subject: add a test conf