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

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
 
credentials = pika.PlainCredentials(username, pwd)
connection = pika.BlockingConnection(pika.ConnectionParameters(ip_addr, port_num, \'/\', credentials))
channel = connection.channel()
 
# 消费成功的回调函数
def callback(ch, method, properties, body):
  print(\" [%s] Received %r\" % (time.time(), body))
  # time.sleep(0.2)
 
 
# 开始依次消费balance队列中的消息
channel.basic_consume(queue=\'balance\', on_message_callback=callback, auto_ack=True)
 
print(\' [*] Waiting for messages. To exit press CTRL+C\')
channel.start_consuming() # 启动消费