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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 _input_handler_decorator(self, data):
 """Adds positional parameters to selected input_handler's results. """

        input_handler = getattr(self, self.__InputHandler)
        input_parts = [
            self.Parameters['taxonomy_file'],
            input_handler(data),
            self.Parameters['training_set_id'],
            self.Parameters['taxonomy_version'],
            self.Parameters['modification_info'],
            self.ModelDir,
        ]
        return self._commandline_join(input_parts)