better algorithm for computing unique_id

homeassistant/components/konnected/switch.py

@@ -7,7 +7,7 @@
 
 from . import (
     CONF_ACTIVATION, CONF_MOMENTARY, CONF_PAUSE, CONF_REPEAT,
-    DOMAIN as KONNECTED_DOMAIN, PIN_TO_ZONE, STATE_HIGH, STATE_LOW)
+    DOMAIN as KONNECTED_DOMAIN, STATE_HIGH, STATE_LOW)
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -41,7 +41,8 @@ def __init__(self, device_id, pin_num, data):
         self._pause = self._data.get(CONF_PAUSE)
         self._repeat = self._data.get(CONF_REPEAT)
         self._state = self._boolean_state(self._data.get(ATTR_STATE))
-        self._unique_id = '{}-{}'.format(device_id, PIN_TO_ZONE[pin_num])
+        self._unique_id = '{}-{}'.format(device_id, hash(frozenset(
+            {self._pin_num, self._momentary, self._pause, self._repeat})))
         self._name = self._data.get(CONF_NAME)
 
     @property