如何使用boto3获取给定SQS队列的死信队列？

import boto3

sqs_client = boto3.client('sqs')

queue_name = 'your_queue_name'
response = sqs_client.get_queue_url(QueueName=queue_name)
queue_url = response['QueueUrl']

attribute_name = 'RedrivePolicy'
response = sqs_client.get_queue_attributes(QueueUrl=queue_url, AttributeNames=[attribute_name])
redrive_policy = response['Attributes'][attribute_name]

import json
redrive_policy = json.loads(redrive_policy)
dead_letter_queue_url = redrive_policy['deadLetterTargetArn'].split(':')[-1]

attribute_name = 'QueueArn'
response = sqs_client.get_queue_attributes(QueueUrl=dead_letter_queue_url, AttributeNames=[attribute_name])
dead_letter_queue_arn = response['Attributes'][attribute_name]