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。

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