How to use the pymssql.DATETIME function in pymssql

def _guess_variable(self, field_name, field_metadata, inspect_table):
        # pylint: disable=import-error
        from pymssql import STRING, NUMBER, DATETIME, DECIMAL

        type_code, *_ = field_metadata

        if type_code in (NUMBER, DECIMAL):
            return ContinuousVariable(field_name)

        if type_code == DATETIME:
            tv = TimeVariable(field_name)
            tv.have_date = True
            tv.have_time = True
            return tv

        if type_code == STRING:
            if inspect_table:
                values = self.get_distinct_values(field_name, inspect_table)
                if values:
                    return DiscreteVariable(field_name, values)

        return StringVariable(field_name)