要求，通过用户名密码登录，登录错误3次，锁定用户名
1 # coding=utf-8 2 # Author: RyAn Bi 3 4 import os, sys #调用系统自己的库 5 6 accounts_file = 'E:\\homework\\user.txt' # 存放用户名密码的位置 7 lock_file = 'E:\\homework\\lock.txt' #存放锁定用户名的位置 8 print('accounts_file:', accounts_file) 9 ''' 10 temp1 = open(accounts_file,'a') #a为加入 11 temp1.write('bjb,123'+'\n') 12 temp1.close() #写入用户名密码的功能，在登录的时候不用 13 ''' 14 user = open(accounts_file, 'r') #r为只读 15 # print('user:',user) 16 account_list = user.readlines() #逐行按分隔符阅读，readline是逐字节阅读 17 # print('account_list:',account_list) 18 user.close() #读取用户名和密码到内存中 19 20 user1 = open(lock_file, "r") 21 lock_list = user1.readlines() 22 # print(lock_list) 23 user1.close() #读取被锁定的用户名到内存中 24 loginSucess = False #默认将loginSucess置为假 25 while True: 26 username = input('username:').strip() #.strip是去除空格和\n 27 lockid = 0 #锁定用户标识值为零，不锁定 28 if len(username) != 0: #假如用户名不为空 29 for i in lock_list: 30 # i = i.split(' ') #i的分割符为空格 31 # print(i) 32 if username == i.strip(): 33 print('your username %s is locked!' % username) 34 lockid = 1 35 break # 判断该帐号是否被锁定 36 for i in account_list: 37 # print(i) 38 if lockid == 1: #被锁定了禁止执行 39 break 40 else: 41 i = i.split(',') 42 # print(i) 43 if username == i[0]: 44 for x in range(3): 45 password = input('password:').strip() 46 if password == i[1].strip(): # 去掉空格和换行符 47 loginSucess = True 48 # print('you are right') 49 break #验证3次密码，成功了置 loginsuccess 为真 50 else: 51 print('%s,you input wrong password 3 times,your %s is locked!' % (username, username)) 52 l = open(lock_file, 'w') #w只允许写入，以写入方式打开locklist 53 if l != "": 54 l = open(lock_file, 'a') #假如是locklist中有内容，用添加方式打开locklist，避免空白行 55 l.write(username + '\n') #将用户名写入 56 l.close() 57 lockid = 1 58 # view = open(lock_file) 59 # print(view.read()) 60 if loginSucess is True: 61 print('welcome to system') 62 break 63 elif lockid == 0: 64 print('you input a wrong username，pls input again') 65 else: 66 # print('%s,you input wrong password 3 times,your %s is locked!' % (username, username)) 67 break 68 else: # 用户名输入为空的时候 69 continue