自定义函数实现密码强度分级

是要补充的
def codelevel(s):
.
while True:
code＝input('密码：')
.

def codelevel(s):
    isdigit = False
    isupper = False
    islower = False
    for i in s:
        if 48<=ord(i)<=57:
            isdigit = True
        elif 65<=ord(i)<=90:
            isupper = True
        elif 97<=ord(i)<=122:
            islower = True
    return (isdigit + isupper + islower + (len(s)>=8))
    
s = input('请输入测试密码（直接回车为退出）：').strip()
while True:
    if s =='':break
    print(codelevel(s))
    s = input('请输入测试密码（直接回车为退出）：').strip()