old_contents: from .settings import *
  
  DATABASES = {
      'default': {
          'ENGINE': os.environ.get('DJANGO_ENGINE', 'django.db.backends.mysql'),
          'NAME': 'cities_light_test',                      # Or path to database file if using sqlite3.
          'USER': 'root',                      # Not used with sqlite3.
          'PASSWORD': '',                  # Not used with sqlite3.
          'HOST': '',                      # Set to empty string for localhost. Not used with sqlite3.
          'PORT': '',                      # Set to empty string for default. Not used with sqlite3.
          'OPTIONS': {
            'autocommit': True,
          },
      }
  }
  
  
  
new_contents: import django
  from .settings import *
  
  DATABASES = {
      'default': {
          'ENGINE': 'mysql.connector.django',
          'NAME': 'cities_light_test',                      # Or path to database file if using sqlite3.
          'USER': 'root',                      # Not used with sqlite3.
          'PASSWORD': '',                  # Not used with sqlite3.
          'HOST': '',                      # Set to empty string for localhost. Not used with sqlite3.
          'PORT': '',                      # Set to empty string for default. Not used with sqlite3.
      }
  }
  
subject: Use mysql connector in settings_mysql