python入门 第一节 作业一

作业一：编写登录接口
 1）输入有户名密码
 2）认证成功后显示欢迎信息
 3）输错三次后锁定

程序

username_dict={"wangzhuoqun":"wangzhuoqun1","xuehao":"xuehao1","xiewenwu":"xiewenwu1","shenshunqi":"shenshunqi1","wangxuheng":"wangxuheng1"}

n=1
a=0
b=0
c=0
d=0
e=0
while n>0:
    username = input("Username:")
    password = input("Password:")
    g=open('D:\\locked2.txt','r')
    content = g.read()
    if username in content:
        print("Your username have been locked!!!")
    else:
        if username not in username_dict:
            print("No this username!!!")
        else:
            if username_dict[username] == password:
                print("Welcome!!!")
                break
            else:
                print("The password is error!!!")
                n += 1
                if username == "wangzhuoqun":
                    a += 1
                    if a == 3:
                        print("Your username have been locked!!!")
                        f = open('D:\\locked2.txt', 'a')
                        f.write(username)
                        f.write('\n')
                        f.close()
                elif username == "xuehao":
                    b += 1
                    if b == 3:
                        print("Your username have been locked!!!")
                        f = open('D:\\locked2.txt', 'a')
                        f.write(username)
                        f.write('\n')
                        f.close()
                elif username == "xiewenwu":
                    c += 1
                    if c == 3:
                        print("Your username have been locked!!!")
                        f = open('D:\\locked2.txt', 'a')
                        f.write(username)
                        f.write('\n')
                        f.close()
                elif username == "shenshunqi":
                    d += 1
                    if d == 3:
                        print("Your username have been locked!!!")
                        f = open('D:\\locked2.txt', 'a')
                        f.write(username)
                        f.write('\n')
                        f.close()
                else:
                    e += 1
                    if e == 3:
                        print("Your username have been locked!!!")
                        f = open('D:\\locked2.txt', 'a')
                        f.write(username)
                        f.write('\n')
                        f.close()