三次锁定（文件加强版）

#author:徐征
f= open("acount",mode="r",encoding="utf8")
x = f.readlines()
p=[]
d={}
for i in range(len(x)):
    p.append(x[i].strip().split("---"))
    d[p[i][0]] = p[i][1]

f1=open("lock",mode="a+",encoding="utf8")
lock_name=f1.readlines()

flag=True
count=0
while flag :
    user=input("username:")
    pwds=input("password:")
    if lock_name.count(user)==3:
        print("The user is locked!")
        continue
    while True:
        if list(d.keys()).count(user)!=0:
            if list(d.values()).count(pwds)!=0:
                print("success!")
                exit()
            else:
                print("Password is not correct!")
                lock_name.append(user)
                break
        else:
            print("The user does not exist!")
            break