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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 async def set_heater_temp(self, device_id, set_temp):
 """Set heater temp."""

        payload = {"homeType": 0,
                   "timeZoneNum": "+02:00",
                   "deviceId": device_id,
                   "value": int(set_temp),
                   "key": "holidayTemp"}
        await self.request("changeDeviceInfo", payload)