Python script implements a file store-based user login program

1 #!/usr/bin/env python2 #Coding:utf-83 4 """5 AIM: User Login program based on File Store (3 login failures, lock users)6     7 need:8 A. User information file9 B. User inputTen      One Logical: A A. Verifying the legal status of a user name - B. Verifying user lock-in conditions - c. Check password the D. Updating the number of logon failures - E. Writing files -          - sum: + A. Update user lockout number do not directly manipulate the file, you can write to the memory, the program to write the file before exiting - B. Logical judgment Situation + """ A  at #read file, get user information str -F1 = open ('DB','R') -Content =F1.read () - f1.close () -  - #Convert user information from STR to list inUser_data_list = Content.split ('\ n') -User_detail_list = [] to  + #Save user information as a dictionary to the list -  forUser_infoinchuser_data_list: theUser_detail = User_info.split ('|') * User_detail_list.append ({ $         'name': user_detail[0],Panax Notoginseng         'pwd': user_detail[1], -         ' Times': user_detail[2] the     }) +  A Print(""" the Welcome to the old Boys education Group, please login first!  + """) -  $ #Main program exit flag bit $Flag =True - #number of Exits -Exit_flag = 3 the #Main Process -  whileflag:Wuyiuser_name = input ("User name (quit [quit]):") the     #Exit Judgment -     ifUser_name! ='quit': Wu         #Traverse user Information list -          forIteminchuser_detail_list: About             #determine if the user name exists $             ifUser_name = = item['name']: -                 #user exists to determine whether to lock -                 ifInt (item[' Times']) <Exit_flag: -User_pwd = input ("Password:") A                     #Verifying passwords +                     ifUser_pwd = = item['pwd']: the                         Print('Login Successful') -                         #Update Dictionary $item[' Times'] =0 the                         #update while loop flag bit theFlag =False the                         #Exit For Loop the                          Break -                     Else: in                         Print('Password Error') the                         #Update Dictionary theitem[' Times'] = Int (item[' Times']) + 1 About                         #Exit For Loop, continue to enter user name the                          Break the                 Else: the                     Print("User is locked") +                      Break -         Else: the             Print('user name does not exist')Bayi     Else: theFlag =False the  - #Finally, the user information is written to the file - #Working with Strings theResult_info ="' the  forIteminchuser_detail_list: theItem_str ='%s|%s|%s'% (item['name'], item['pwd'], item[' Times']) the     ifResult_info.strip () = ="': -Result_info + =Item_str the     Else: theResult_info = Result_info +'\ n'+Item_str the 94 #Write File theF2 = open ('DB','W') the f2.write (result_info) theF2.close ()

Python script implements a file store-based user login program