Python User interaction input

Applications sometimes need to interact with the user in order to continue, such as user login. The use of input is the key to this scenario

Scenario: Users need to enter a user name and password when logging in, if the user failed to login three times the account is locked.

Development: Requires two basic files: 1. User account password 2. Blacklist

#!/usr/bin/env Python3##登陆代码locked=open ("Locked.dat","R") Logon=open ("Logins.dat","R")Print("Welcome to XXX, please enter the user name and password!") Username=input ("Please enter user name:") forLineinchLocked:if(Line.strip () = =username):Print("The account is locked! To unlock please contact the administrator!") Locked.close () exit (0) passwd=input ("Please enter your password:")##验证登陆密码 forTimeinchRange (3): time+=1if(time==3):        Print("three opportunities have been exhausted, the account is locked, if you need to unlock please contact the administrator!") Lock=open ("Locked.dat","a") Lock.write (username+"\ n") Lock.close () Logon.close () exit (0) forLineinchlogon:if(Username==line.strip (). Split () [0] andPasswd==line.strip (). Split () [1]):            Print("Landing Success!") Logon.close () exit (0) passwd=input ("Please first"+str (time+1) +"Enter Password:")

Python User interaction input