old_contents: import os
  
  ROOT_DIR = os.path.abspath(os.path.join(os.path.dirname(__file__), os.pardir))
  
  SQLALCHEMY_DATABASE_URI = 'postgresql://postgres:postgres@localhost/rtrss_dev'
  
  # directory to store runtime data, write access required
  DATA_DIR = os.path.join(ROOT_DIR, 'data')
  
  DEBUG = True
  
  SECRET_KEY = 'development key'
  
  FILESTORAGE_URL = 'file://{}'.format(DATA_DIR)
  
  SERVER_NAME = os.environ.get('C9_HOSTNAME', 'localhost:8080')
  PORT = int(os.environ.get('C9_PORT', 8080))
  IP = os.environ.get('C9_IP', '0.0.0.0')
  
new_contents: import os
  
  ROOT_DIR = os.path.abspath(os.path.join(os.path.dirname(__file__), os.pardir))
  
  SQLALCHEMY_DATABASE_URI = 'postgresql://postgres:postgres@localhost/rtrss_dev'
  
  # directory to store runtime data, write access required
  DATA_DIR = os.path.join(ROOT_DIR, 'data')
  
  DEBUG = True
  
  SECRET_KEY = 'development key'
  
  FILESTORAGE_URL = 'file://{}'.format(DATA_DIR)
  
  PORT = int(os.environ.get('C9_PORT', 8080))
  IP = os.environ.get('C9_IP', '0.0.0.0')
  
subject: Remove HOST_NAME from development config