def _blockedPairs(self, blocks):

        block, blocks = core.peek(blocks)
        self._checkBlock(block)

        product = itertools.product

        pairs = (product(base, target) for base, target in blocks)

        return itertools.chain.from_iterable(pairs)
Converts the value returned by the database into the desired
dataset/ETHPy150Open datamade/dedupe/dedupe/api.py/RecordLinkMatching._blockedPairs--crossover with--dataset/ETHPy150Open Teradata/PyTd/teradata/datatypes.py/DefaultDataTypeConverter.convertValue