Paho Mqtt Client

import paho.mqtt.client as paho
import os
import time
from random import randint
import json


myhash = randint(20000,30000)

broker = "127.0.0.1"
port = 1883

mypid = os.getpid()
client_uniq = client_uniq = "client123"
mqttc = paho.Client(client_uniq, True)

# Connect with timeout
mqttc.connect(broker, port, 60)

def on_message( mosq, obj, msg):
    print "what's payload: ", msg.payload

# Subscribe
mqttc.subscribe('mqtt-subscription-client123qos1',1)
mqttc.on_message = on_message


while mqttc.loop()==0:
    msg = 13

    mqttc.publish("request", msg , qos=1, retain=False) # qos = 0,
    print "Message Published"
    time.sleep(1)