def combineNames(k1, k2):
    if k1 is None:
        return k2
    elif k2 is None:
        return k1
    else:
        return (k1, k2) % "%s.%s"
dataset/ETHPy150Open hoytak/lazyrunner/lazyrunner/parameters/common.py/combineNames/swapped operands of `%`