src/transformers/pipelines/base.py/PipedPipelineDataFormat/__iter__
class PipedPipelineDataFormat:    def __iter__(self):
        for line in sys.stdin:
            # Split for multi-columns
            if "\t" in line:
                line = line.split("\t")
                if self.column:
                    # Dictionary to map arguments
                    yield {kwargs: l for (kwargs, _), l in zip(self.column, line)}
                else:
                    yield tuple(line)

            # No dictionary to map arguments
            else:
                yield line