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54 lines
1.1 KiB
Plaintext
54 lines
1.1 KiB
Plaintext
---
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id: mqtt-python
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title: Python
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sidebar_label: Python
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sidebar_position: 2
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---
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### Sending/receiving messages on mosquitto server using python
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Here is an example publish message in python:
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```python
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#!/usr/bin/env python3
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import paho.mqtt.client as mqtt
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from random import randrange, uniform
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import time
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client = mqtt.Client("some_client_id")
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client.connect('localhost')
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while True:
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randNumber = uniform(20.0, 21.0)
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client.publish("env/test/TEMPERATURE", randNumber)
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print("Just published " + str(randNumber) + " to topic TEMPERATURE")
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time.sleep(1)
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```
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Here is example subscribe in python:
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```python
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#!/usr/bin/env python3
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import paho.mqtt.client as paho
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def on_message(mosq, obj, msg):
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print("%-20s %d %s" % (msg.topic, msg.qos, msg.payload))
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mosq.publish('pong', 'ack', 0)
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def on_publish(mosq, obj, mid):
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pass
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if __name__ == '__main__':
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client = paho.Client()
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client.on_message = on_message
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client.on_publish = on_publish
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client.connect("localhost", 1883, 60)
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client.subscribe("env/test/TEMPERATURE", 0)
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while client.loop() == 0:
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pass
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```
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