If decimal_places is 0, cast to int after rounding

homeassistant/components/sensor/arest.py

@@ -132,6 +132,8 @@ class ArestSensor(Entity):
                 value = float(value) * float(self._corr_factor)
             if self._decimal_places is not None:
                 value = round(value, self._decimal_places)
+            if self._decimal_places == 0:
+                value = int(value)
             return value
         else:
             return values.get(self._variable, 'n/a')

homeassistant/components/sensor/command_sensor.py

@@ -79,6 +79,8 @@ class CommandSensor(Entity):
                     value = float(value) * float(self._corr_factor)
                 if self._decimal_places is not None:
                     value = round(value, self._decimal_places)
+                if self._decimal_places == 0:
+                    value = int(value)
                 self._state = value
         except ValueError:
             self._state = value

homeassistant/components/sensor/rest.py

@@ -140,6 +140,8 @@ class RestSensor(Entity):
                         value = float(value) * float(self._corr_factor)
                     if self._decimal_places is not None:
                         value = round(value, self._decimal_places)
+                    if self._decimal_places == 0:
+                        value = int(value)
                     self._state = value
             except ValueError:
                 self._state = RestSensor.extract_value(value, self._variable)