aiomqtt 2.4.0

The idiomatic asyncio MQTT client

The idiomatic asyncio MQTT client 🙌

Documentation: https://aiomqtt.bo3hm.com

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Write code like this:

Publish

async with Client("test.mosquitto.org") as client:
    await client.publish("temperature/outside", payload=28.4)

Subscribe

async with Client("test.mosquitto.org") as client:
    await client.subscribe("temperature/#")
    async for message in client.messages:
        print(message.payload)

Key features

• No more callbacks! 👍
• No more return codes (welcome to the MqttError)
• Graceful disconnection (forget about on_unsubscribe, on_disconnect, etc.)
• Supports MQTT versions 5.0, 3.1.1 and 3.1
• Fully type-hinted
• Did we mention no more callbacks?

Installation

pip install aiomqtt

The only dependency is paho-mqtt.

If you can't wait for the latest version, install directly from GitHub with:

pip install git+https://github.com/empicano/aiomqtt

Note for Windows users

Since Python 3.8, the default asyncio event loop is the ProactorEventLoop. Said loop doesn't support the add_reader method that is required by aiomqtt. Please switch to an event loop that supports the add_reader method such as the built-in SelectorEventLoop:

# Change to the "Selector" event loop if platform is Windows
if sys.platform.lower() == "win32" or os.name.lower() == "nt":
    from asyncio import set_event_loop_policy, WindowsSelectorEventLoopPolicy
    set_event_loop_policy(WindowsSelectorEventLoopPolicy())
# Run your async application as usual
asyncio.run(main())

License

This project is licensed under the BSD 3-clause License.

Note that the underlying paho-mqtt library is dual-licensed. One of the licenses is the Eclipse Distribution License v1.0, which is almost identical to the BSD 3-clause License. The only differences are:

• One use of "COPYRIGHT OWNER" (EDL) instead of "COPYRIGHT HOLDER" (BSD)
• One use of "Eclipse Foundation, Inc." (EDL) instead of "copyright holder" (BSD)

Contributing

We're happy about contributions to aiomqtt! 🎉 Get started by reading CONTRIBUTING.md.

Versioning

This project adheres to Semantic Versioning. Breaking changes will only occur in major X.0.0 releases.

Changelog

See CHANGELOG.md, which follows the principles of Keep a Changelog.