题解 | #字符串分隔#

chars = input()
remainder = len(chars) % 8
if remainder:
    chars += (8-remainder)*'0'
idx = 1
oct_group = ''
for v in chars:
    if idx % 8:
        oct_group += v
    else:
        oct_group += v
        print(oct_group)
        oct_group = ''
    idx += 1

避免边界判断，直接在末尾加上（8-余数）个0