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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 add_sensors(self, sensor_infos):
 """Add fake sensors sensor_infos is a dict <sensor-name> : ( <description>, <unit>, <sensor-type>, <params>*) The sensor info is string-reprs of whatever they are, as they would be on the wire in a real KATCP connection. Values are passed to a katcp.Message object, so some automatic conversions are done, hence it is OK to pass numbers without stringifying them. """

        # Check sensor validity. parse_type() and parse_params should raise if not OK
        for s_name, s_info in sensor_infos.items():
            s_type = Sensor.parse_type(s_info[2])
            s_params = Sensor.parse_params(s_type, s_info[3:])
        self.fake_sensor_infos.update(sensor_infos)
        self._fic._interface_changed.set()