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Based on the initial example script by @jburdy in #66, improved a bit on the stability of the MQTT publishing and added a possibility to have the script "loop" forever, so that it can be used as part of a systemd service or a Docker deployment without the repeated overhead of starting up the Python runtime.
Note that the script will currently still "crash" while in
--loop
if anything goes wrong with reading the data. So it is sensible to have the calling service or wrapper re-start it in a loop. I personally use it in a Docker file like this: