Count lights on Home Assistant mushroom card

card.yaml

type: custom:mushroom-template-card
primary: >-
  {% if (states.light | selectattr('state', 'eq', 'on') | list | count |float) >
  0 %}

  {{ states.light | selectattr('state', 'eq', 'on') | list | count }} lys på


  {% else %}

  Ingen lys på

  {%endif%}
secondary: ''
icon: mdi:lightbulb
layout: vertical
icon_color: >-
  {% if (states.light | selectattr('state', 'eq', 'on') | list | count |float) >
  0 %}

  yellow 

  {% else %}

  grey

  {%endif%}
badge_icon: ''
fill_container: true