Count lights on but with a specific brightness

Configuration
1

I have a simple template sensor to check all lights on and display it. But how do I also get it to display the ones that have a specific current brightness, for example 1% ?

Current code for the sensor below:

sensor:
  - platform: template
      lights_on:
        friendly_name: "Lights on:"
        icon_template: mdi:light      
        value_template: >
          {{ states.light |selectattr('state', 'eq', 'on') 
            |list |count }}
2

You can add another selectattr filter to filter by brightness like this:

{{ states.light | selectattr('state', 'eq', 'on') | selectattr('attributes.brightness', 'eq', 1) | list | count }}

I don’t have brightness_pct for my lights, so I can’t test if you can replace brightness with brightness_pct

3

Thanks, that’s one of the variations I actually tried but I get this error (in Template editor):

UndefinedError: 'homeassistant.util.read_only_dict.ReadOnlyDict object' has no attribute 'brightness'
4

Weird, because it works with me, in developer tools, to test, I have:

{{ states.light | selectattr('state', 'eq', 'on') | list | count }}
{{ states.light | selectattr('state', 'eq', 'on') | selectattr('attributes.brightness', '>=', 50) | list | count }}

And the result, when I turn one light at the minimum brightness is

1
0

image
image1146Ă—229 20.9 KB

5

Yeah, weird. Copied your exact code and still same error. I thought that it could perhaps be because I have some switches made into lights, so I tried to reject those with:

|reject('search', 'switch.tellus_plug|switch.wall| ....

But the error remains:

Screenshot 2023-04-14 at 10.48.51
Screenshot 2023-04-14 at 10.48.512320Ă—598 72.3 KB

6

Shouldn’t you put the reject regex before trying to read attributes?

7

No, I’d assume not. If I just remove the “new” line below, I get the correct number of lights on.

| selectattr('attributes.brightness', '>=', 50

Screenshot 2023-04-14 at 11.02.15
Screenshot 2023-04-14 at 11.02.151968Ă—610 62.3 KB

EDIT: I incorrectly wrote switch instead of light on those entities. But still, same error.

8

If you remove the count and look at the list here, you’ll probably see some entries that doesn’t have a brightness attribute.

These are the one you have to exclude before trying to read the brightness attribute. Or try to put a default to assume their brightness.

9

Or select the one with a brightness attribute

{{ states.light | selectattr('state', 'eq', 'on') | selectattr('attributes.brightness', 'defined') | selectattr('attributes.brightness', '>=', 50) | list | count }}

Not sure about that one, trying to help

10

Yes! That one (also) works! Marking that as the solution.

I did it like this before seeing your answer, which also works but feels more messy.

{{ states.light | selectattr('state', 'eq', 'on') 
|reject('search', 'light.switches_that_were_made_into_lights....')
| selectattr('attributes.brightness', 'eq', 1)
| list | count }}

Thanks for all the help!

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