In terms of pure readability I find breaking the list comprehensions helps in more complex cases (and is still valid Python), e.g.: octets = [bbs[i:i+8]

In terms of pure readability I find breaking the list comprehensions helps in more complex cases (and is still valid Python), e.g.: octets = [bbs[i:i+8] for i in range(0, len(bbs), 8) if i%2 != 0]