def distance(left,right):
    return sum([1 for (l,r) in zip(left, right) if l !=r ])
    

34b1c89311c4e661042ac3e333aab8f06ec92f95
<mask token>

def distance(left, right):
    return sum([(1) for l, r in zip(left, right) if l != r])

def distance(left,right):
    return sum([1 for (l,r) in zip(left, right) if l !=r ])
    
