首页if message.topic == fire/testTopic: NameError: name 'message' is not defined. Did you mean: 'on message' ?

if message.topic == fire/testTopic: NameError: name 'message' is not defined. Did you mean: 'on message' ?

时间: 2024-05-19 19:13:25 浏览: 106

dash-mqtt:带有Dash Plotly的MQTT

使用MQTT短跑 dash_mqtt是Dash组件库，用于向您的Dash应用程序添加MQTT消息传递功能。实际上，它是的包装。用法使用测试MQTT代理的简单回显示例。 import dash_mqtt import dash from dash.dependencies import Input, Output, State import dash_html_components as html import dash_core_components as dcc TEST_SERVER = 'broker.emqx.io' TEST_SERVER_PORT = 8083 TEST_SERVER_PATH = 'mqtt' MESSAGE_OUT_TOPIC = 'testtopic' MESSAGE_IN_TOPIC = 'testtopic' app = dash.Dash(__

This error message suggests that the variable 'message' has not been defined in the current scope. It also suggests that there might be a typo in the code, and that the intended reference might be to a function called 'on_message'. To fix this error, you should ensure that the variable 'message' is defined before it is used in the if statement. Additionally, if you intended to reference a function called 'on_message', you should update the code accordingly.

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