python（14）- 简单练习：登录账户失败三次，账户自动锁定

#读取注册用户的信息，用户名，密码，输错次数，写入字典中

user={}

with open("DB1",encoding="utf8") as f:

    for line in f:

        username_list=line.strip().split("|")      #username_list--->['egon', '123', '2']

        user[username_list[0]]={"name":username_list[0],

                 "pwd":username_list[1],

                 "times":username_list[2]}

# print(user)  #-->{'egon': {'name': 'egon', 'pwd': '123', 'times': '2'}, 'xuyaping': {'name': 'xuyaping', 'pwd': '123', 'times': '0'}, 'xyy': {'name': 'xyy', 'pwd': '123', 'times': '1'}}

#读取黑名单用户，将黑名单用户加入列表中

with open("black_lockname",encoding="utf8") as f1:

    black_list=[]

    for line in f1:

        black_list.append(line.strip())

# print(black_list)

while True:

    username = input("please input your username:").strip()

    passwd = input("please input your passwd:").strip()

    #用户在黑名单中

    if username in black_list:

        print("该用户为黑名单用户，请滚")

        break

    # 用户为注册用户

    elif username in user:

        user[username]["times"]=int(user[username]["times"])

        if user[username]["times"]<3 and passwd==user[username]["pwd"]:

            print("登录成功")

            user[username]["times"]=0

            #将修改后的信息重新写入DB1中

            with open("DB1","w",encoding="utf8") as f3:

                for i in user:

                    f3.write(i + "|" + user[i]["pwd"] + "|" + str(user[i]["times"]) + "\n")

            break

        else:

            user[username]["times"]+=1

            print("登录错误")

            # 将修改后的信息重新写入DB1中

            with open("DB1", "w", encoding="utf8") as f3:

                for i in user:

                    f3.write(i + "|" + user[i]["pwd"] + "|" + str(user[i]["times"]) + "\n")

            if user[username]["times"]==3:

                black_list.append(username)

                print("账户被锁定")

                # 将修改后的信息重新写入black_lockname中

                with open("black_lockname","w",encoding="utf8") as f4:

                    for j in black_list:

                        f4.write(j+ "\n")

                break

    #用户不是注册用户

    else:

        print("该用户没有注册")

        break

xuyaping|123|0

egon|123|1

xuyuanyuan|123|2

DB1

alex

black_lockname