Python rabbitMQ如何实现生产消费者模式

import pika
import sys
import time
 
# 远程rabbitmq服务的配置信息
username = 'admin' # 指定远程rabbitmq的用户名密码
pwd = 'admin'
ip_addr = '10.1.7.7'
port_num = 5672
 
# 消息队列服务的连接和队列的创建
credentials = pika.PlainCredentials(username, pwd)
connection = pika.BlockingConnection(pika.ConnectionParameters(ip_addr, port_num, '/', credentials))
channel = connection.channel()
# 创建一个名为balance的队列，对queue进行durable持久化设为True(持久化第一步)
channel.queue_declare(queue='balance', durable=True)
 
message_str = 'Hello World!'
for i in range(100000000):
  # n RabbitMQ a message can never be sent directly to the queue, it always needs to go through an exchange.
  channel.basic_publish(
    exchange='',
    routing_key='balance', # 写明将消息发送给队列balance
    body=message_str, # 要发送的消息
    properties=pika.BasicProperties(delivery_mode=2, ) # 设置消息持久化(持久化第二步)，将要发送的消息的属性标记为2，表示该消息要持久化
  ) # 向消息队列发送一条消息
  print(" [%s] Sent 'Hello World!'" % i)
  # time.sleep(0.2)
connection.close() # 关闭消息队列服务的连接