Check if sensor already exists

Configuration
1

Hi,

how can I avoid this error:

Jul 03 09:21:00 tower hass[11827]: ERROR:homeassistant.helpers.template:Error parsing value: list object has no element 1 (value: 'NoneType' object has no attribute 'registers', template: {{float(value.split ('=')[1]) / 60 / 24}})

The sensor is not yet available after startup because it gets filled by a script that calls data via ModBus. So I’ll need something like a “try catch” thingy.

- platform: command_line
  name: Filter change remaining time
  value_template: "{{float(value.split ('=')[1]) / 60 / 24}}"
  command: '/home/homeassistant/.homeassistant/helios/helios.py helios.fritz.box 10 v01033'

And, second question: how can I format the result to two decimals. Currently the value can get quite long based on the result of the division.

Thanks!

2

Can’t help with the loading error, but for the decimal you just have to use the round(n) function (n being the number of decimals).

So this should do the trick :

value_template: "{{float(value.split ('=')[1]) / 60 / 24 | round(2) }}"

2 Likes
3

That was too easy, thx :slight_smile: