Add loop Energy sensors.

.coveragerc

@@ -139,6 +139,7 @@ omit =
     homeassistant/components/sensor/glances.py
     homeassistant/components/sensor/gtfs.py
     homeassistant/components/sensor/netatmo.py
+    homeassistant/components/sensor/loopenergy.py
     homeassistant/components/sensor/neurio_energy.py
     homeassistant/components/sensor/onewire.py
     homeassistant/components/sensor/openweathermap.py

homeassistant/components/sensor/loopenergy.py

@@ -0,0 +1,121 @@
+"""
+Support for Loop Energy sensors.
+
+For more details about this platform, please refer to the documentation at
+https://home-assistant.io/components/sensor.loop_energy/
+"""
+import logging
+
+from homeassistant.helpers.entity import Entity
+
+_LOGGER = logging.getLogger(__name__)
+
+DOMAIN = "loopenergy"
+
+REQUIREMENTS = ['pyloopenergy==0.0.4']
+
+
+def setup_platform(hass, config, add_devices, discovery_info=None):
+    """Setup the Loop Energy sensors."""
+    import pyloopenergy
+
+    elec_serial = config.get('electricity_serial')
+    elec_secret = config.get('electricity_secret')
+    gas_serial = config.get('gas_serial')
+    gas_secret = config.get('gas_secret')
+
+    if not (elec_serial and elec_secret):
+        _LOGGER.error(
+            "Configuration Error, "
+            "please make sure you have configured electricity "
+            "serial and secret tokens")
+        return None
+
+    if (gas_serial or gas_secret) and not (gas_serial and gas_secret):
+        _LOGGER.error(
+            "Configuration Error, "
+            "please make sure you have configured gas "
+            "serial and secret tokens")
+        return None
+
+    controller = pyloopenergy.LoopEnergy(
+        elec_serial,
+        elec_secret,
+        gas_serial,
+        gas_secret
+        )
+
+    sensors = [LoopEnergyElec(controller)]
+
+    if gas_serial:
+        sensors.append(LoopEnergyGas(controller))
+
+    add_devices(sensors)
+
+
+# pylint: disable=too-many-instance-attributes
+class LoopEnergyDevice(Entity):
+    """Implementation of an Loop Energy base sensor."""
+
+    # pylint: disable=too-many-arguments
+    def __init__(self, controller):
+        """Initialize the sensor."""
+        self._state = None
+        self._unit_of_measurement = 'kW'
+        self._controller = controller
+        self._name = None
+
+    @property
+    def name(self):
+        """Return the name of the sensor."""
+        return self._name
+
+    @property
+    def state(self):
+        """Return the state of the sensor."""
+        return self._state
+
+    @property
+    def should_poll(self):
+        """No polling needed."""
+        return False
+
+    @property
+    def unit_of_measurement(self):
+        """Return the unit of measurement of this entity, if any."""
+        return self._unit_of_measurement
+
+    def _callback(self):
+        self.update_ha_state(True)
+
+
+# pylint: disable=too-many-instance-attributes
+class LoopEnergyElec(LoopEnergyDevice):
+    """Implementation of an Loop Energy Electricity sensor."""
+
+    # pylint: disable=too-many-arguments
+    def __init__(self, controller):
+        """Initialize the sensor."""
+        super(LoopEnergyElec, self).__init__(controller)
+        self._name = 'Power Usage'
+        self._controller.subscribe_elecricity(self._callback)
+
+    def update(self):
+        """Get the cached Loop energy."""
+        self._state = self._controller.electricity_useage
+
+
+# pylint: disable=too-many-instance-attributes
+class LoopEnergyGas(LoopEnergyDevice):
+    """Implementation of an Loop Energy Gas sensor."""
+
+    # pylint: disable=too-many-arguments
+    def __init__(self, controller):
+        """Initialize the sensor."""
+        super(LoopEnergyGas, self).__init__(controller)
+        self._name = 'Gas Usage'
+        self._controller.subscribe_gas(self._callback)
+
+    def update(self):
+        """Get the cached Loop energy."""
+        self._state = self._controller.gas_useage

requirements_all.txt

@@ -182,6 +182,9 @@ pyfttt==0.3
 # homeassistant.components.device_tracker.icloud
 pyicloud==0.7.2
 
+# homeassistant.components.sensor.loopenergy
+pyloopenergy==0.0.4
+
 # homeassistant.components.device_tracker.netgear
 pynetgear==0.3.2