def _pre_startup():
 _setup_logging()
 if _options.verbose:
  logging.getLogger().setLevel(logging.DEBUG)
 if _options.enable_openflow:
  pox.openflow.launch()

def _pre_startup ( ) : _setup_logging ( ) if _options . verbose : logging . getLogger ( ) . setLevel ( logging . DEBUG ) if _options . enable_openflow : pox . openflow . launch ( )
this function is called after all the pox options have been read in but before any components are loaded .