求大佬

维ABCD

letter='qwertyuiopasdfghjklzxcvbnmQWERTYUIOPLKJHGFDSAZXCVBNM'
symbol='!@#$%^&*()_+|}{:>?<*.,;\][=-'
first=0
second=0
third=0
temp=input('请输入密码:')
has_num=False
for apple in temp:
    if apple in num:
        has_num=True
if has_num:
    first+=1
has_letter=False
for apple in temp:
    if apple in letter:
if has_letter:
    first+=1
has_symbol=False
for apple in temp:
    if apple in symbol:
if has_symbol:
    first+=1
length=len(temp)
if length<=8:
    second=1
elif 16>=length>8:
    second=2
elif length>=16:
    second=3
if temp.istitle():
    third=1
while 1:
    if first==1 and second==1:
        print('低')
    elif first==2 and second==2:
        print('中')
    elif first==3 and second==3 and third==1:
        print('高')
    break

为什么报错啊，而且输完密码后不继续进行了