Pyscript MQTT 发布消息答案

【问题标题】：Pyscript MQTT publishing messagePyscript MQTT 发布消息
【发布时间】：2022-06-14 23:55:01
【问题描述】：

谁能帮我解决这个问题我正在处理 py-script html 页面，我想通过 mqtt 在特定主题中发布消息。我把python代码放在标签里

import asyncio
import os
import signal
import time
    
from gmqtt import Client as MQTTClient
    
STOP = asyncio.Event()
   
    
def on_connect(client, flags, rc, properties):
        print('Connected')
        client.subscribe('TEST/#', qos=0)
    
    
def on_message(client, topic, payload, qos, properties):
        print(payload)
    
    
def on_disconnect(client, packet, exc=None):
        print('Disconnected')
    
def on_subscribe(client, mid, qos, properties):
        print('SUBSCRIBED')
    
 
    
async def main(broker_host):
        client = MQTTClient("3232DZQ")
    
        client.on_connect = on_connect
        client.on_message = on_message
        client.on_disconnect = on_disconnect
        client.on_subscribe = on_subscribe
     
        await client.connect(broker_host)
    
        client.publish('TEST/TIME', 'IZISIUIQY', qos=1)

        await STOP.wait()
        await client.disconnect()

def ask_exit(*args):
    STOP.set()    
    
if __name__ == '__main__':
        loop = asyncio.new_event_loop() 
        host = 'broker.hivemq.com' 
        loop.run_until_complete(main(host))

当我单独运行 python 文件时，它工作正常： python file working fine ，但是当我将代码放在标签中时，我不起作用。我想通过 mqtt 运行和发布消息的 html 页面，使用标记 pyscript 和属性 src="publish.py"

指向 python 文件

<!DOCTYPE html>
<html>
  <head> 

    <title>Publish MQTT</title>
    <link rel="stylesheet" href="https://pyscript.net/alpha/pyscript.css" /> 
<script defer src="https://pyscript.net/alpha/pyscript.js"></script>
    <py-env>
        - gmqtt
    </py-env> 
  </head>

  <body>

  <!--calling publish python code-->
<py-script src="publish.py"></py-script>

  </body>
</html>

error

【问题讨论】：

请任何人在他的机器上运行此代码来发现问题

标签： python async-await python-asyncio mqtt pyscript