code: def get_logger(logger_name):
      
  
      # Use default global logger
      if logger_name is None:
          return __instance
  
      assert isinstance(logger_name, str), 'Logger name must be a string!'
  
      with __lock:
          if logger_name in __loggers:
              return __loggers[logger_name]
  
          logger_instance = LogOne(logger_name=logger_name)
          __loggers[logger_name] = logger_instance
          return logger_instance
docs: Return a logger with the specified name, creating it if necessary.