code: def set_stream_logger(log_level=logging.DEBUG, format_string=None, logger_name='smc'): 
       
      if format_string is None: 
          format_string = LOG_FORMAT
   
      logger = logging.getLogger(logger_name) 
      logger.setLevel(log_level)
      
      # create console handler and set level
      ch = logging.StreamHandler() 
      ch.setLevel(log_level)
      # create formatter
      formatter = logging.Formatter(format_string)
      # add formatter to ch
      ch.setFormatter(formatter) 
      logger.addHandler(ch)
docs: Stream logger convenience function to log to console
      
      :param int log_level: A log level as specified in the `logging` module
      :param str format_string: Optional format string as specified in the 
          `logging` module