def unique(seq):
    seen = set()
    return [seen.add(x) or x for x in seq if x not in seen]
Stub function for incrementing a path by a given value. 
dataset/ETHPy150Open x3omdax/PenBox/Versions/V1.3/penbox.py/unique--crossover with--dataset/ETHPy150Open AppScale/appscale/AppDB/zkappscale/zktransaction_stub.py/ZKTransaction.increment_and_get_counter