| 复制代码num = '1,2,3,4,5,6,7,8,9,0'
letter = 'a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z'
str1 = r'''~`!@#$%^&*()_+=-\|]}[{"':;?/>.<,'''
def check(password):
    global level 
    level = 0
    for each in password:
        if each in num:
            level += 1
            break
    for each in password:
        if each in letter:
            level += 1
            break
    for each in password:
        if each in str1:
            level += 1
            break
    return level
tip = (
"请按以下方式提升您的密码安全级别:\n"
"\t1.密码必须由数字、字母及特殊字符三种组合\n"
"\t2.密码只能由字母开头\n"
"\t3.密码长度不能低于16位\n")             
while 1:
    global level
    password = input('请输入密码:')
    long = len(password)
    check(password)
    if password[0] not in letter or long <= 8 or level == 1:
        print('您的密码安全级别评定为:低')
        print(tip)
        continue
    elif password[0] in letter and long > 8 and level == 2:
        print('您的密码安全级别评定为:中')
        print(tip)
        continue
    elif password[0] in letter and long > 16 and level == 3:
        print('您的密码安全级别评定为:高')
        print('请继续保持')
        break
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