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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 __arguments(self, ttype, tvalue):
 """Arguments parsing method Entry point for command arguments parsing. The parser must call this method for each parsed command (either a control, action or test). Syntax: *argument [ test / test-list ] :param ttype: current token type :param tvalue: current token value :return: False if an error is encountered, True otherwise """

        if ttype == "identifier":
            test = get_command_instance(tvalue.decode("ascii"), self.__curcommand)
            self.__curcommand.check_next_arg("test", test)
            self.__expected = test.get_expected_first()
            self.__curcommand = test
            return self.__check_command_completion(testsemicolon=False)

        if ttype == "left_parenthesis":
            self.__set_expected("identifier")
            return True

        if ttype == "comma":
            self.__set_expected("identifier")
            return True

        if ttype == "right_parenthesis":
            self.__up()
            return True

        if self.__argument(ttype, tvalue):
            return self.__check_command_completion(testsemicolon=False)

        return False