Python是一門功能強大的編程語言，被廣泛使用于各種應用程序的開發。其中，物聯網是當前最熱門的領域之一，Python在物聯網應用開發中也扮演著舉足輕重的角色。Python物聯網框架提供了許多強大的工具和函數，使得開發物聯網應用變得更加簡單和高效。

以下是幾個Python物聯網框架的例子和代碼：

# Example 1
# 使用paho-mqtt框架實現設備和服務器之間的通信
import paho.mqtt.client as mqtt
# connect to server
client = mqtt.Client()
client.connect("iot.eclipse.org", 1883, 60)
# publish message
client.publish("topic", "hello world")
# subscribe to a topic
def on_connect(client, userdata, flags, rc):
print("Connected with result code "+str(rc))
client.subscribe("topic")
# receive message
def on_message(client, userdata, msg):
print(msg.topic+" "+str(msg.payload))
client.on_connect = on_connect
client.on_message = on_message
client.loop_forever()

# Example 2
# 使用Twisted框架進行異步編程
from twisted.internet.protocol import Protocol, ClientFactory
class EchoClientProtocol(Protocol):
def connectionMade(self):
self.transport.write("hello world")
def dataReceived(self, data):
print("Server response: {}".format(data))
self.transport.loseConnection()
class EchoClientFactory(ClientFactory):
def buildProtocol(self, addr):
return EchoClientProtocol()
def clientConnectionFailed(self, connector, reason):
print("Connection failed.")
reactor.stop()
def clientConnectionLost(self, connector, reason):
print("Connection lost.")
reactor.stop()
from twisted.internet import reactor
reactor.connectTCP("localhost", 8000, EchoClientFactory())
reactor.run()

以上是兩個Python物聯網框架的簡單例子，希望對你有所幫助。