Python实现简单登录验证

yipeiwu_com6年前Python基础

本文实例为大家分享了简单的Python登录验证,供大家参考,具体内容如下

编写登录接口

要求:1、输入用户名密码

   2、认证成功后显示欢迎信息

   3、输错三次后锁定

#coding=utf-8
__author__ = 'wangwc'

import sys,os
count = 0
locked = 0
mark_user = 0
mark_passwd = 0
#获取路径
def cur_file_dir():
  path = sys.path[0]
  if os.path.isdir(path):
    return path
  elif os.path.isfile(path):
    return os.path.dirname(path)
#print (cur_file_dir())
path = cur_file_dir()
#print(path)
path1 = path.replace("\\",'/') + '/'
#print (path1)
#path2 = path1 + '/'

#循环输入
while count < 3:
  name = input("Username:").strip()
  if len(name) == 0:
    print ("Username can not be empty....")
    continue
  key = input("Password:").strip()
  if len(key) == 0:
    print("The password can not be empty!Try again...")
    continue
  f = open(path1 + "username.txt","r")
  userlist = f.readlines()
  for user in userlist:
    if user.strip() == name:
      mark_user = 1
  f.close()

  if mark_user == 1:
    f = open(path1 + "%s_lock.txt" %(name),"r")
    locked = int(f.readline().strip())
    f.close()
  else:
    print ("Username or Passsord wrong....")
    break
  if locked == 1:
    print("Sorry, the username had been locked!!!Please call the system administrator...")
  else:
    f = open (path1 + "%s_passwd.txt" %(name),"r")
    passwd = (f.readline().strip())
    if passwd.strip() == key:
      mark_passwd = 1
    if mark_user == 1 and mark_passwd == 1:
      f = open("%s_count.txt" %(name),"w")
      f.write("0")
      f.close()
      print("%s,welcome BABY!" %(name) )
      #input('Press Enter to exit')
    else:
      f = open("%s_count.txt" %(name),"r")
      count = int((f.read().strip()))
      f.close()
      count +=1
      f = open("%s_count.txt" %(name),"w")
      f.write(str(count))
      f.close()
      print ("Username or password wrong!And the username '%s' has %d more chances to retry!" %(name,3 - count))
      if(count == 3):
        print ("'%s' has been locked!!!" %(name))
        if os.path.exists(path1 + "%s_lock.txt" %(name)):
          fobj = open(path1 + "%s_lock.txt" %(name),"w")
          fobj.writelines("1\n")
        else:
          print ("Username or password wrong!")
      continue

以上就是本文的全部内容,希望对大家的学习有所帮助。

相关文章

python函数声明和调用定义及原理详解

这篇文章主要介绍了python函数声明和调用定义及原理详解,文中通过示例代码介绍的非常详细,对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下 函数是指代码片段,可以重复调...

python生成特定分布数的实例

我就废话不多说了,直接上代码吧! from scipy.stats import binom, norm, beta, expon import numpy as np import...

Python基于贪心算法解决背包问题示例

本文实例讲述了Python基于贪心算法解决背包问题。分享给大家供大家参考,具体如下: 贪心算法(又称贪婪算法)是指,在对问题求解时,总是做出在当前看来是最好的选择。也就是说,不从整体最优...

PyCharm搭建Spark开发环境的实现步骤

PyCharm搭建Spark开发环境的实现步骤

1.安装好JDK 下载并安装好jdk-12.0.1_windows-x64_bin.exe,配置环境变量: 新建系统变量JAVA_HOME,值为Java安装路径 新建系统变量...

由浅入深讲解python中的yield与generator

前言 本文将由浅入深详细介绍yield以及generator,包括以下内容:什么generator,生成generator的方法,generator的特点,generator基础及高级应...