import operator def judge(i, jm=False): all_le_256 = all(map(lambda x: x in range(256), i)) mask_valid = True if jm: bin_mask = "".join([bin(x)[2:].ljust(8, '0') for x in i]) mask_valid = bin_mask.index("0") > bin_mask.rindex("1") return all_le_256 and mask_valid ...