Apologies for this, it is somewhat hidden. Once you have the Python MQTT library installed via the instructions in this readme, you can get the sort of detailed documentation you’re looking for with the command
Ultimately, you’ll notice that functions like
luxWrite() are just shorthand for the more generic
virtualWrite() function. The former allow you to skip specifying the data and unit types, where as the latter being generic wants you to explicitly define them. For a really quick example,
client.virtualWrite(2, 25.2, "temp", "c")
are directly equivalent – both will pass 25.2˚C as a value to MQTT channel 2.
You’ll likely find this thread useful if you want to see what your data/unit options are for populating
If you edit this file on your local install, you can define your own functions that wrap
virtualWrite() as well.