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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 __argument(self, ttype, tvalue):
 """Argument parsing method This method acts as an entry point for 'argument' parsing. Syntax: string-list / number / tag :param ttype: current token type :param tvalue: current token value :return: False if an error is encountered, True otherwise """

        if ttype in ["multiline", "string"]:
            return self.__curcommand.check_next_arg("string", tvalue.decode("utf-8"))

        if ttype in ["number", "tag"]:
            return self.__curcommand.check_next_arg(ttype, tvalue.decode("ascii"))

        if ttype == "left_bracket":
            self.__cstate = self.__stringlist
            self.__curstringlist = []
            self.__set_expected("string")
            return True

        condition = (
            ttype in ["left_cbracket", "comma"] and
            self.__curcommand.non_deterministic_args
        )
        if condition:
            self.__curcommand.reassign_arguments()
            # rewind lexer
            self.lexer.pos -= 1
            return True

        return False