def dmp_gff_list(f, u, K):
    if not u:
        return dup_gff_list(f, K)
    else:
        raise MultivariatePolynomialError(f)
Use this to set the 'dirty' flag.
dataset/ETHPy150Open sympy/sympy/sympy/polys/sqfreetools.py/dmp_gff_list--crossover with--dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/enterprise/row.py/RowObject.setDirty