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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 exists(c_table_cd: str, tables: I2B2Tables) -> int: """ Return the number of records that exist with the table code. - Ideally this should be zero or one, but the default table doesn't have a key :param c_table_cd: key to test :param tables: :return: number of records found """

        conn = tables.ont_connection
        table = tables.schemes
        return bool(list(conn.execute(table.select().where(table.c.c_table_cd == c_table_cd))))