List of all 'domains', 'entities',

Configuration
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it all started here Template to display loaded components on HA instance?

this is the python_script currently:

##############################################################################################################
# python script to show the loaded components on a  Hassio instance, and order them alphabetically, grouping
# components that have sub components (attributes)
# this script gets its data from the rest_sensor:
#   - platform: rest
#     name: Hassio Rpi4 config
#     resource: !secret resource_hassio_rpi4_config
#     authentication: basic
#     value_template: >
#       {{ value_json.version }}
#     json_attributes:
#       - components
#       - unit_system
#       - config_dir
#     headers:
#       Content-Type: application/json
#       Authorization: !secret api_bearer_token
#       User-Agent: Home Assistant REST sensor

# https://community.home-assistant.io/t/template-to-display-loaded-components-on-ha-instance/114402/59
# @123 and @apop pointed to the rest sensor, and made that availabe in Lovelace
# @petro had a great hand in creating the script
# thanks for joining in on a great HA community!
# @mariusthvdb 20190504
##############################################################################################################
attributes = {}
components = hass.states.get('sensor.hassio_rpi4_config').attributes['components']
cnt = len(components)
components.sort()

# Make a dictionary of all main domains, add each sub domain to the main domain list.
compdict = {}
for component in components:
    if component.count('.') == 0 and component not in compdict:
        compdict[component] = []
    if component.count('.') == 1:
        domain, subdomain = component.split('.')
        compdict[domain].append(subdomain)

# Make the dictionary into a flat list of strings.

complist = []

for key, value in compdict.items():
    if value:
        value.sort()
        # Adding a domain & series of sub domains
        complist.append('- {}: \n --> {}'.format(key, ', '.join(value)))
    else:
        complist.append('- {}'.format(key))

# join each component with a carriage return
complist = '\n'.join(complist)

text = '{} Loaded Components:\n' \
       '{}'.format(cnt, complist)

attributes['friendly_name'] = 'Components'
attributes['icon'] = 'mdi:format-list-bulleted-type'
attributes['Components'] = cnt
attributes['---------------'] = '--------'

attributes['text'] = complist #text

hass.states.set('sensor.overview_components', cnt, attributes)

# hass.states.set('sensor.overview_components', cnt, {
#     'icon': 'mdi:format-list-bulleted-type',
#     'friendly_name': 'Components',
#     'text': text
#     })
##############################################################################################################
# first attempt, simply creating an unordered list of components
# components = hass.states.get('sensor.hassio_main_config').attributes['components']
# count = len(components)
# components.sort()
# list = ', '.join(components)
#
# text = '*========== {} Loaded Components ========\n' \
#         '+{}' \
#           .format(count,
#                   list)

left in some comments, might be interesting to see what’s happening.

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