Set attributes only

 

How to change an attribute of an entity within an automation（）

 

Python script

 

# /config/python_scripts/update_entity_attributes.py
# author：matterxiaomi
# blog：

entity_id = data.get('entity_id')
attributes_to_update = data.get('attributes')

if entity_id is None:
    logger.error("entity_id is required for updating attributes.")
elif attributes_to_update is None:
    logger.warning("No attributes provided to update for entity: %s", entity_id)
else:
    # Get current state and attributes
    current_state_object = hass.states.get(entity_id)

    if current_state_object:
        current_state = current_state_object.state
        current_attributes = dict(current_state_object.attributes) # Create a mutable copy

        # Update only the specified attributes
        current_attributes.update(attributes_to_update)

        # Set the state back with updated attributes, preserving the original state
        hass.states.set(entity_id, current_state, current_attributes)
        logger.info("Attributes updated for entity %s", entity_id)
    else:
        logger.warning("Entity %s not found. Cannot update attributes.", entity_id)

Explanation:

1.Set attributes only

2.The existing state will be preserved unless explicitly provided in the state parameter.

 

Developer tools 

action: python_script.update_entity_attributes
data: 
  entity_id: sensor.my_map
  attributes:
    friendly_name: new_value

 

use this script in an automation or another script:

- service: python_script.update_entity_attributes
  data:
    entity_id: sensor.my_entity
    attributes:
      new_attribute_1: value_1
      another_attribute: new_value

Explanation:

To update only attributes of an entity in Home Assistant using a Python script, you can leverage the hass.states.set() function, passing in the entity_id and the new_attributes you want to set. The existing state will be preserved unless explicitly provided in the state parameter.

 

homeassistant.update_entity

script:
  update_travel_time:
    alias: "Manually update travel time sensor"
    sequence:
      - service: homeassistant.update_entity
        target:
          entity_id: sensor.google_travel_time_home_work # Replace with your sensor's entity ID

 

 

useful links

Python script for Home Assistant to handle state and attributes of existing sensors and entities.

https://github.com/pmazz/ps_hassio_entities