rabbitmq python封装

import pika

class Rabbitmq():
    __new = None
    __init = True

    def __new__(cls, *args, **kwargs):
        if cls.__new is None:
            cls.__new = object.__new__(cls)
        return cls.__new

    def __init__(self,queue):
        '''
        :param queue: 队列名称
        '''
        self.queue = queue
        if Rabbitmq.__init:
            #链接rabbitmq
            pika.PlainCredentials(username='用户名', password='密码')
            self.connection = pika.BlockingConnection(pika.ConnectionParameters(host='IP地址', port=端口号))
            self.channel = self.connection.channel()
            self.channel.basic_qos(prefetch_count=1)    #公平分发
            self.channel.queue_declare(queue=queue)     #创建队列
            Rabbitmq.__init = False

    def basic_publish(self,body):
        '''
        :param body: 需要插入的数据
        :return:插入数据
        '''
        self.channel.basic_publish(
            exchange='',
            routing_key=self.queue,
            body=body)

    def basic_consume(self,callback):
        '''
        :return: 确认监听队列
        auto_ck:默认应答方式
        '''
        self.channel.basic_consume(
            queue=self.queue,
            auto_ack=True,
            on_message_callback=callback)

    def consume(self):
        '''
        :return:正式监听
        '''
        self.channel.start_consuming()

    def close(self):
        '''
        :return:关闭链接
        '''
        self.connection.close()

if __name__ == '__main__':
    queue = 'ceshi3'
    rbmq = Rabbitmq(queue)
    for i in range(10000):
        print(i)
        rbmq.basic_publish('holler word hahahah'+str(i))

    def callback(ch, method, properties, body):
        print("[x]:", body)

    rbmq.basic_consume(callback)
    rbmq.consume()
    rbmq.close()