home-assistant.io/source/developers/python_api.markdown

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layout	title	description	date	sidebar	comments	sharing	footer
page	Python Remote API	Home Assistant Python Remote API documentation	2015-05-11 12:00	true	false	true	true

In the package homeassistant.remote a Python API on top of the HTTP API can be found.

This page is not a full documentation it's more a collection of some example. A simple way to get all current entities is to visit the "Set State" page in the "Developer Tools". For the examples below just choose one from the available entries. Here the sensor sensor.office_temperature and the switch switch.livingroom_pin_2 are used.

First, import the module and setup the basics.

import homeassistant.remote as remote

api = remote.API('127.0.0.1', 'password')
print(remote.validate_api(api))

This snippet shows how to use the homeassistant.remote package in another way.

import homeassistant.remote as remote

api = remote.API('127.0.0.1', 'password')
hass = remote.HomeAssistant(api)
hass.start()
living_room = hass.states.get('group.living_room')

{% linkable_title Get configuration %}

Get the current configuration of a Home Assistant instance.

import homeassistant.remote as remote

api = remote.API('127.0.0.1', 'password')

print(remote.get_config(api))

{% linkable_title Get details about services, events, and entitites %}

Similar to the output in the "Developer Tools" of the frontend.

import homeassistant.remote as remote

api = remote.API('127.0.0.1', 'YOUR_PASSWORD')

print('-- Available services:')
services = remote.get_services(api)
for service in services:
    print(service['services'])

print('\n-- Available events:')
events = remote.get_event_listeners(api)
for event in events:
    print(event)

print('\n-- Available entities:')
entities = remote.get_states(api)
for entity in entities:
    print(entity)

{% linkable_title Get the state of an entity %}

To get the details of a single entity the get_state method is used.

import homeassistant.remote as remote

api = remote.API('127.0.0.1', 'YOUR_PASSWORD')
office_temperature = remote.get_state(api, 'sensor.office_temperature')
print('{} is {} {}.'.format(office_temperature.attributes['friendly_name'],
                            office_temperature.state,
                            office_temperature.attributes['unit_of_measurement']
                            )
      )

The output is composed out of the details which are stored for this entity.

Office Temperature is 19 °C.

The exact same thing is working for a switch. The difference is that both entities have different attributes.

import homeassistant.remote as remote

api = remote.API('127.0.0.1', 'YOUR_PASSWORD')
switch_livingroom = remote.get_state(api, 'switch.livingroom_pin_2')
print('{} is {}.'.format(switch_livingroom.attributes['friendly_name'],
                         switch_livingroom.state
                         )
      )

{% linkable_title Set the state of an entity %}

Of course, it's possible to set the state.

import homeassistant.remote as remote
from homeassistant.const import STATE_ON

api = remote.API('127.0.0.1', 'YOUR_PASSWORD')
remote.set_state(api, 'sensor.office_temperature', new_state=123)
remote.set_state(api, 'switch.livingroom_pin_2', new_state=STATE_ON)

The state will be set to those value until the next update occurs.

{% linkable_title Blinking all entities of a domain %}

If you want to turn on all entities of a domain, just use a service which was retrieved by get_services.

import time
import homeassistant.remote as remote

api = remote.API('127.0.0.1', 'YOUR_PASSWORD')
domain = 'switch'

remote.call_service(api, domain, 'turn_on')
time.sleep(10)
remote.call_service(api, domain, 'turn_off')

{% linkable_title Control a single entity %}

To turn on or off a single switch. The ID of the entity is needed as an attribute.

import time
import homeassistant.remote as remote

api = remote.API('127.0.0.1', 'YOUR_PASSWORD')
domain = 'switch'
switch_name = 'switch.livingroom_pin_2'

remote.call_service(api, domain, 'turn_on', {'entity_id': '{}'.format(switch_name)})
time.sleep(5)
remote.call_service(api, domain, 'turn_off', {'entity_id': '{}'.format(switch_name)})

{% linkable_title Specify a timeout %}

The default timeout for an API call with call_service is 5 seconds. Service taking longer than this to return will raise homeassistant.exceptions.HomeAssistantError: Timeout unless provided with a longer timeout.

import homeassistant.remote as remote

api = remote.API('host', 'password')
domain = 'switch'

# Assuming switch.timeout_switch takes 10 seconds to return
switch_name = 'switch.timeout_switch'

# Raises homeassistant.exceptions.HomeAssistantError: Timeout when talking to
remote.call_service(api, domain, 'turn_on', {'entity_id': switch_name})

# Runs withous exception
remote.call_service(api, domain, 'turn_on', {'entity_id': switch_name},
                    timeout=11)

{% linkable_title Send a notification %}

The example uses the jabber notification platform to send a single message to the given recipient in the configuration.yaml file.

import homeassistant.remote as remote

api = remote.API('127.0.0.1', 'YOUR_PASSWORD')
domain = 'notify'
data = {"title":"Test", "message":"A simple test message from HA."}

remote.call_service(api, domain, 'jabber', data)

For more details please check the source of homeassistant.remote.