Sync crypto-currency platforms (#7906)

homeassistant/components/sensor/etherscan.py

@@ -4,23 +4,36 @@ Support for Etherscan sensors.
 For more details about this platform, please refer to the documentation at
 https://home-assistant.io/components/sensor.etherscan/
 """
-from homeassistant.components.sensor import PLATFORM_SCHEMA
-from homeassistant.helpers.entity import Entity
-import homeassistant.helpers.config_validation as cv
+from datetime import timedelta
+
 import voluptuous as vol
 
+import homeassistant.helpers.config_validation as cv
+from homeassistant.components.sensor import PLATFORM_SCHEMA
+from homeassistant.const import (CONF_NAME, ATTR_ATTRIBUTION)
+from homeassistant.helpers.entity import Entity
+
 REQUIREMENTS = ['python-etherscan-api==0.0.1']
+
 CONF_ADDRESS = 'address'
+CONF_ATTRIBUTION = "Data provided by etherscan.io"
+
+DEFAULT_NAME = 'Ethereum Balance'
+
+SCAN_INTERVAL = timedelta(minutes=5)
 
 PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
-    vol.Required(CONF_ADDRESS): cv.string
+    vol.Required(CONF_ADDRESS): cv.string,
+    vol.Optional(CONF_NAME, default=DEFAULT_NAME): cv.string,
 })
 
 
 def setup_platform(hass, config, add_devices, discovery_info=None):
-    """Set up the etherscan sensors."""
-    add_devices([EtherscanSensor('Ethereum Balance',
-                                 config.get(CONF_ADDRESS))])
+    """Set up the Etherscan.io sensors."""
+    address = config.get(CONF_ADDRESS)
+    name = config.get(CONF_NAME)
+
+    add_devices([EtherscanSensor(name, address)], True)
 
 
 class EtherscanSensor(Entity):
@@ -32,7 +45,6 @@ class EtherscanSensor(Entity):
         self.address = address
         self._state = None
         self._unit_of_measurement = 'ETH'
-        self.update()
 
     @property
     def name(self):
@@ -49,6 +61,13 @@ class EtherscanSensor(Entity):
         """Return the unit of measurement this sensor expresses itself in."""
         return self._unit_of_measurement
 
+    @property
+    def device_state_attributes(self):
+        """Return the state attributes of the sensor."""
+        return {
+            ATTR_ATTRIBUTION: CONF_ATTRIBUTION,
+        }
+
     def update(self):
         """Get the latest state of the sensor."""
         from pyetherscan import get_balance