python redis 消息队列

redis 安装完成后，以下代码可以直接运行

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on Wed Sep  5 16:08:51 2018

@author: luogan
"""

import json
import redis

import datetime
import sys
import json
import multiprocessing
import time
import redis
###
from datetime import date


#以下代码是向redis 发命令
QUEUE = "code"
#redisPool = redis.ConnectionPool(host=config.get_redis_host(), port=6379, db=config.get_redis_db())
redisPool = redis.ConnectionPool(host='localhost', port=6379, db=8)
client = redis.Redis(connection_pool=redisPool)

def send_cmd(seaweed):
    json_cmd = json.dumps(seaweed, ensure_ascii=False)
    client.rpush(QUEUE, json_cmd)

ll=list(range(100))
get_weekend('20180325')})
if __name__ == "__main__":
    for k in ll:

        send_cmd({"label":k,'timd':20160503,'timm':20170430})



#以下代码是向redis 取命令，并且采用多进程来实现计算
def func(a,b,c):
    print(a,b)


def worker(pname):
    client = redis.Redis(connection_pool=redisPool)
    while True:
        try:
            cmd = client.lpop(QUEUE)
        except:
            cmd = None
        if cmd is None:
            return

        else:
            cmd = format_cmd(cmd)
            try:
                func( cmd["label"],cmd['timd'],cmd['timm'])
                #price_fix.update(cmd["city"], cmd["region"], cmd["name"])
                print(pname + ":", cmd, "计算成功")
            except Exception as ex:
                print(ex)
                print(pname + ":", cmd, "计算失败")


def format_cmd(cmd):
    return json.loads(cmd)


if __name__ == "__main__":

    pro_num = 20
    pool = multiprocessing.Pool(processes=pro_num)
    for pid in range(1, pro_num):
        pid = "PROC" + str(pid).zfill(3)
        pool.apply_async(worker, (pid,))
    pool.close()
    pool.join()