def METHOD_NAME(self, datas: list, columns: list):
    list = []
    for index, value in enumerate(datas):
        if value is None:
            list.append(None)
        else:
            data = str(value);
            column = columns[index]
            log.info("column is:{}".format(column))
            list.append(self.convertData(data, column))
    return list