def diffheaders(t1, t2):

    t1h = set(header(t1))
    t2h = set(header(t2))
    return t2h - t1h, t1h - t2h
Return the difference between the headers of the two tables as a pair of
dataset/ETHPy150Open alimanfoo/petl/petl/util/misc.py/diffheaders