Python Comprehensive Practice-User login

A program Introduction

1.1 File Distribution

Login_user.jpg Flowchart Information

README.txt

login_main_v1.1.py Main Program

user_config.conf configuration file

Flow chart:

650) this.width=650; "Src=" Http://s1.51cto.com/wyfs02/M02/82/5C/wKioL1dSgS7QhNkvAAGYzFmv3t4581.jpg-wh_500x0-wm_3 -wmp_4-s_2538692698.jpg "title=" login_user.jpg "alt=" Wkiol1dsgs7qhnkvaagyzfmv3t4581.jpg-wh_50 "/>

README.txt

# # # #by cw#####

login_main_v1.1.py

#2016-06-04

Program Run Instructions:

1. Run the program login_main.py

2. Enter the user name and password, Input_check () Check the user input is correct, the user name and password can not be empty, password at least 6 digits, if not conform to the specification, return to the login interface can be entered

3. If qualified, then execute Login_check (), check whether the user is locked, if locked, then exit, if not locked, continue to the next step

4. Continue to check user Login_passwd_check (), login username is correct, if correct, give welcome interface

5. If the user name and password is not correct, execute Login_limit_check () then return to the login screen, counter plus 1, if the counter is greater than 3 times, then lock the user and exit

Subsequent extensible content:

1. Registering users to MySQL

2. Lock users can store to Memcached/redis

3. Web Presentation Sub-function

4. Continue to improve according to the following comprehensive exercises

###### #end readme.txt###############

User_config.conf

#username, Password,status,lock_count

Chenwei, Chenwei, n,0

chenwei2,chenwei,y,0

chenwei3,chenwei,y,0

Two-coded

The specific code below, some implementations are not simple enough, subsequent second version optimization

#/bin/python#coding=utf-8#by cw#2016-06-03import osuser_conf_file= ' D:\chenwei\data\user_config.conf ' user_conf_tmp= ' D:\chenwei\data\user_config_tmp.conf ' Count_limt=0def welcome_main ():     print  "    welcome to python world!!!!!!!     by cw     "Def read_config_file (file,username):      '     :p aram file:  profile     :p aram  username:  user name entered     :return:  read user profile, return username, lock status      '     fn=open (file)     user_conf= "    status="     count= '     passwd= '     for line in  fn:        if line.split (', ') [0].strip ()  ==  username:  #根据用户名去查找, take care to remove the space    &nBsp;      user_conf=line.split (', ') [0]    #返回用户名            passwd=line.split (', ') [1]   #返回密码            status=line.split (', ') [2]   #返回状态            count=line.split (', ') [3]   #返回次数     fn.close ()     return  (User_conf,passwd,status,count)   #  return status Def input_check (USERNAME,PASSWD):     flag=true    if len (username)  ==  0:        print  ' the username is null,please  Input againt!!! '         flag=false    if len (passwd)  ==  0:        print  ' the passwd is null,please&Nbsp;input againt!!!! '         flag=false    if len (passwd)   < 6:        print  "The passwd length is  not enough! "         Flag=False    return Flagdef  Login_lock_check (status):     if status ==  ' Y ':          return False     #the  user don ' t  locked     else:         return  true     #the  user lockeddef lock_usered (file,file_tmp,username):     fn = open (file)     fn_tmp = open (file_tmp,  ' a ')     new_line = []    for line in&nBsp;fn.readlines ():     #读取配置文件的每一行         if  Line.split (', ') [0].strip ()  == username:             new_line.append ("%S&NBSP;,"  % username)              new_line.append ("%S&NBSP;,"  % line.split (', ') [1].strip ())              new_line.append (' N, ')              new_line.append ('%s \n '  % line.split (', ') [3].strip ()]             fn_tmp.writelines (new_line)              continue         fn_tmp.writelines (line)     fn.close ()     fn_tmp.close ()     os. remove (file)     os.rename (file_tmp, file) while true:     Config_list= '     name = raw_input (' please input your name:  ')     passwd = raw_input (' please input your password:  ')     if input_check (NAME,PASSWD)  == False :       #检查用户名和密码的规范性         continue    else:         config_list=read_config_file (User_conf_file,name)       #返回配置文件里面的内容     if login_lock_check (config_list[2]):  #返回用户状态          print  "the user is locked"          exit ()     else:        if  name == config_list[0] and passwd == config_list[1]:            welcome_main ()            exit ()          else:             Count_limt = Count_limt + 1             if Count_limt == 1:                 print  ' The username or password is  not right,you maybe try two!!! ' &NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;IF&NBSP;COUNT_LIMT&NBSP;==&NBSP;2:                 print  ' The username or password is not right,you maybe&nbSp;try one!!! '             if count_limt >= 3:                 lock_usered ( User_conf_file,user_conf_tmp,name)                  print  "user locked!!!"                 exit ()

This article is from the "Ruffian Cook actor" blog, please be sure to keep this source http://chenwei.blog.51cto.com/32183/1786067

Python Comprehensive Practice-User login