def rowmul(matlist, index, k,  K):
    for i in range(len(matlist[index])):
        matlist[index][i] = k*matlist[index][i]
    return matlist
add attribute
dataset/ETHPy150Open sympy/sympy/sympy/matrices/densetools.py/rowmul--crossover with--dataset/ETHPy150Open plivo/plivohelper-python/tests/test_restxml.py/TestRecord.testRecordAddAttribute