长度为0的时候不要输出就好了

while(1):
    try:
        num = list(map(str, input().split()))
        n = len(num)
        for i in range(n):
            k = list(num[i])
            if (i == n - 1):
                if(len(k)-1==0):
                    {

                    }
                else:
                    print(len(k) - 1, end=' ')
            else:
                print(len(k), end=' ')
    except:
        break