code: def warn_from_util_logger(msg):
      
      global _LOG
      # This check is necessary to avoid infinite recursion when called from get_config, because
      #   the _read_logging_conf can require reading a conf file.
      if _LOG is None and _LOGGING_CONF is None:
          sys.stderr.write('WARNING: (from peyotl before logging is configured) {}\n'.format(msg))
          return
      if _LOG is None:
          _LOG = get_logger("peyotl.utility")
      _LOG.warn(msg)
docs: Only to be used in this file and peyotl.utility.get_config