conf.py 文件源码

def _fetch_latest_from_memcache(app_version):
  """Get the latest configuration data for this app-version from memcache.

  Args:
    app_version: the major version you want configuration data for.

  Returns:
    A Config class instance for most recently set options or None if none
    could be found in memcache.
  """
  proto_string = memcache.get(app_version, namespace=NAMESPACE)
  if proto_string:
    logging.debug('Loaded most recent conf data from memcache.')
    return db.model_from_protobuf(proto_string)

  logging.debug('Tried to load conf data from memcache, but found nothing.')
  return None