Add attributes (#11698)

homeassistant/components/sensor/random.py

@@ -9,14 +9,17 @@ import logging
 
 import voluptuous as vol
 
-import homeassistant.helpers.config_validation as cv
 from homeassistant.components.sensor import PLATFORM_SCHEMA
 from homeassistant.const import (
-    CONF_NAME, CONF_MINIMUM, CONF_MAXIMUM, CONF_UNIT_OF_MEASUREMENT)
+    CONF_MAXIMUM, CONF_MINIMUM, CONF_NAME, CONF_UNIT_OF_MEASUREMENT)
+import homeassistant.helpers.config_validation as cv
 from homeassistant.helpers.entity import Entity
 
 _LOGGER = logging.getLogger(__name__)
 
+ATTR_MAXIMUM = 'maximum'
+ATTR_MINIMUM = 'minimum'
+
 DEFAULT_NAME = 'Random Sensor'
 DEFAULT_MIN = 0
 DEFAULT_MAX = 20
@@ -40,14 +43,13 @@ def async_setup_platform(hass, config, async_add_devices, discovery_info=None):
     unit = config.get(CONF_UNIT_OF_MEASUREMENT)
 
     async_add_devices([RandomSensor(name, minimum, maximum, unit)], True)
-    return True
 
 
 class RandomSensor(Entity):
     """Representation of a Random number sensor."""
 
     def __init__(self, name, minimum, maximum, unit_of_measurement):
-        """Initialize the sensor."""
+        """Initialize the Random sensor."""
         self._name = name
         self._minimum = minimum
         self._maximum = maximum
@@ -74,6 +76,14 @@ class RandomSensor(Entity):
         """Return the unit this state is expressed in."""
         return self._unit_of_measurement
 
+    @property
+    def device_state_attributes(self):
+        """Return the attributes of the sensor."""
+        return {
+            ATTR_MAXIMUM: self._maximum,
+            ATTR_MINIMUM: self._minimum,
+        }
+
     @asyncio.coroutine
     def async_update(self):
         """Get a new number and updates the states."""