def db_insert_record(self, table_name, columns):
        """Insert records into DB.

        Args:
            table_name (str): The name of the table.
            columns (list): List of columns for insert statement.
        """
        bindings = ('?,' * len(columns)).strip(',')
        values = [None] * len(columns)
        sql = 'INSERT INTO {} ({}) VALUES ({})'.format(table_name, ', '.join(columns), bindings)
        cur = self.db_conn.cursor()
        cur.execute(sql, values)
Insert records into DB.

        Args:
            table_name (str): The name of the table.
            columns (list): List of columns for insert statement.