def sync_keys(dsk1, dsk2):

    return _sync_keys(dsk1, dsk2, toposort(dsk2))
Get the comment attribute from the card image if not already set.
dataset/ETHPy150Open dask/dask/dask/optimize.py/sync_keys--crossover with--dataset/ETHPy150Open spacetelescope/PyFITS/pyfits/card.py/Card.comment