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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:
 def set_shutter_level(self, level=0.0):
 """ sets the shutter level Args: level(float):
 the new level of the shutter. 0.0 = open, 1.0 = closed Returns: the result of the _restCall """

        data = {"channelIndex": 1, "deviceId": self.id, "shutterLevel": level}
        return self._restCall("device/control/setShutterLevel", body=json.dumps(data))