Python3 's Landing

Requirements:

1, can see the detection login name and password,

2. Password input error 3 times, lock the login name to death

# Author:jujue
Import time

Username_list=[]
Password_list=[]
Username_lock_list=[]
#创建登录名的. txt text
F_username=open (' Login_username.txt ', ' w+ ')
F_username.write (' Sumeng,yixin,jujue ')
F_username=open (' Login_username.txt ', ' R ')
#读取 the contents of the. txt text, stored in a string
For line in F_username:
User=line
#关闭文本, freeing up resources
F_username.close ()
#建立密码. txt text
F_password=open (' Login_password.txt ', ' w+ ')
F_password.write (' 123456,abcabc,abc123 ')
#读取 the contents of the. txt text, stored in a string
F_password=open (' Login_password.txt ', ' R ')
For line in F_password:
Passwd=line
#释放资源
F_password.close ()
#将字符串转换成列表, implementing the STR conversion list
Username_list=user.strip (', '). Split (', ')
Password_list=passwd.strip (', '). Split (', ')
#c创建锁定文本
F_login_username_lock=open (' Login_username_lock.txt ', ' A + ')
F_login_username_lock=open (' Login_username_lock.txt ', ' R ')
For line in F_login_username_lock:
#判断文本内容是否为空, is empty
If Line.strip () = = ": #为空
username_lock_list=line# Empty list
Else
#不为空 to read the text contents of the string
Username_lock=line
# Convert a string to a list to implement the STR convert list
Username_lock_list = Username_lock.strip (', '). Split (', ')
#释放内存
F_login_username_lock.close ()

#创建保存输入次数错误三次的登录名, to lock the login name
Print (' Please input username and password...\n ')
Count=0
#输入登录名和密码
Username = input (' username: ')
Password = input (' Password: ')
#检测登录名是否在锁定文本内
If username in username_lock_list: #在
Print (' Landing ... ')
Time.sleep (1) #等1s
Print (' This login name is locked due to too many output password errors ... ', username)
#登录名不在锁定文本内
Else
While Count <3:
#登录名是否在允许登陆的文本内, in:
If username in username_list:
#确定登录名对应密码在字符串中的位置
Username_position = Username_list.index (username)
#判断输入密码是否和登录名对应的密码一致, consistent with the success of this landing site
If password_list[username_position] = = Password:
Print (' Landing ... ')
Time.sleep (1)
Print (' Login successful!!! ‘)
Break
#密码错误
Else
Print (' Landing ... ')
Time.sleep (1)
Print (' Login failed ... Input password is wrong, please re-enter the password ... ')
Password = input (' Password: ')
Count+=1
#当密码输入错误三次时
if Count = = 3:
Print (' Input password error too many times ... ')
#将登录名写入锁定登录名的文本中死锁登录名
F_login_username_lock = open (' Login_username_lock.txt ', ' A + ')
F_login_username_lock.write (username)
F_login_username_lock.write (', ')
F_login_username_lock.close ()
#登录名输入错误, re-enter
Else
Print (' Landing ... ')
Time.sleep (1)
Print (' Enter login name or password Error!!! Please re-enter ... ')
Username = input (' username: ')
Password = input (' Password: ')

Python3 's Landing