在raspberry pi中为Python使用mqtt paho

Question

import paho.mqtt.client as paho


host="messagesight.demos.ibm.com"
port=1883

def on_connect(pahoClient, obj, rc):
# Once connected, publish message
        print "Connected Code = %d"%(rc)
        client.publish("prueba/123", "Hello World", 0)


def on_log(pahoClient, obj, level, string):
        print string

def on_publish(pahoClient, packet, mid):
# Once published, disconnect
        print "Published"
        pahoClient.disconnect()

def on_disconnect(pahoClient, obj, rc):
        print "Disconnected"

# Create a client instance
client=paho.Client()

# Register callbacks
client.on_connect = on_connect
client.on_log = on_log
client.on_publish = on_publish
client.on_disconnnect = on_disconnect

#Set userid and password
client.username_pw_set(userID, password)

#connect
x = client.connect(host, port, 60)

client.loop_forever()

我该怎么修好它？

Answer 1

我只是很快地使代码疲劳，它发布到messagesight.demos.ibm.com。

我所做的唯一一件事就是注释掉用户ID和密码。

#client.username_pw_set(userID, password)

您是否正确安装了Paho Python客户端，也是很好的例子。http://www.eclipse.org/paho/clients/python/