code: def send_to_delivery_stream(events, stream_name):
      
      if not events:
          logger.info("No events provided: nothing delivered to Firehose")
          return
  
      records = []
      for event in events:
          if not isinstance(event, str):
              # csv events already have a newline
              event = json.dumps(event) + "\n"
          records.append({"Data": event})
      firehose = boto3.client("firehose")
      logger.info("Delivering %s records to Firehose stream '%s'",
                  len(records), stream_name)
      resp = firehose.put_record_batch(
          DeliveryStreamName=stream_name,
          Records=records)
      return resp
docs: Sends a list of events to a Firehose delivery stream.