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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 __driver_helper(self, line):
 """Driver level helper method. 1. Display help message for the given input. Internally calls self.__get_help_message() to obtain the help message. 2. Re-display the prompt and the input line. Arguments: line: The input line. Raises: Errors from helper methods print stack trace without terminating this shell. Other exceptions will terminate this shell. """

        if line.strip() == '?':
            self.stdout.write('\n')
            self.stdout.write(self.doc_string())
        else:
            toks = shlex.split(line[:-1])
            try:
                msg = self.__get_help_message(toks)
            except Exception as e:
                self.stderr.write('\n')
                self.stderr.write(traceback.format_exc())
                self.stderr.flush()
            self.stdout.write('\n')
            self.stdout.write(msg)
        # Restore the prompt and the original input.
        self.stdout.write('\n')
        self.stdout.write(self.prompt)
        self.stdout.write(line)
        self.stdout.flush()