(转)python编写登录接口
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python编写登录接口
一、需求
编写登录接口:
1.输入用户名和密码登录
2.输错三次锁定账户
3.下次登录还是上次的账户,提示锁定,直接退出(用到文件读写)
4.成功 后显示登录成功
二、需求流程图
三、代码示例
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例1: #!/bin/bash/env python #_*_ coding:utf-8 _*_ #python version:3.6 ''' 编写登录接口: 1.输入用户名和密码登录 2.输错三次锁定账户 3.下次登录还是上次的账户,提示锁定,直接退出(用到文件读写) 4.成功 后显示登录成功 ''' #lock定义为锁定文件 lock = "E:/Python_learn/day1/lock" #account定义为账户文件 account = "E:/Python_learn/day1/account" #计数器 count = 0 #标识器 flag = 1 #定义锁定用户列表为空 lock_user = [] #打开锁定文件,并读取锁定账户 f1 = open(lock, 'r' ) lock_file = f1.readlines() f1.close() #循环锁定账户,将账户追加到lock_user列表中 for i in lock_file: i = i.strip( '\n' ) lock_user.append(i) #打开账户文件,并读取用户和密码 f2 = open(account, 'r' ) account_file = f2.readlines() f2.close() while True: name = input( "input your name:" ) passwd = input( "input your password:" ) #如果输入的账户在锁定用户列表中,退出循环; if name in lock_user: print( "user is lock!" ) break else : #否则计数器加count+1 count += 1 #如果count大于2,也就是输错三次 if count > 2: print( "错误三次" ) #将账户添加到锁定账户中 with open(lock, 'a' ) as f: f.write( "\n" + name) break #如果count小于2, else : #循环输入的用户名和密码,是否和账户文件里边的一样 for i in account_file: n1,p1 = i.strip().split() if name == n1 and passwd == p1: print( "welcome login!!" ) #如果账户密码一样,flag标识为True flag = True #如果输入账户密码和文件存储的不一样,则跳出本次循环 else : #跳出本次循环 continue #如果flag标识为True,退出整个循环 if flag is True: break 例2: #!/bin/bash/env python #_*_ coding:utf-8 _*_ #python version:3.6 lock = "E:/Python_learn/day1/lock" account = "E:/Python_learn/day1/account" count = 0 flag = 1 lock_user = [] f1 = open(lock, 'r' ) lock_file = f1.readlines() f1.close() for i in lock_file: i = i.strip( '\n' ) lock_user.append(i) f2 = open(account, 'r' ) account_file = f2.readlines() f2.close() while True: name = input( "input your name:" ) passwd = input( "input your password:" ) if name in lock_user: print( "user is lock!" ) break else : count += 1 for i in account_file: n1, p1 = i.strip().split() if name == n1 and passwd == p1: print( "welcome login!!" ) flag = True else : continue if flag is True: break else : if count > 2: print( "错误三次" ) with open(lock, 'a' ) as f: f.write( "\n" + name) break |
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