#coding=utf8
import string,pickle,exceptions
information={}
print "                      welcome to My system!             "
def pwdlen(pwd):
 while (len(pwd)<6 or len(pwd)>10):
     print "你的密碼長度不合法！"
     pwd = raw_input("請重新輸入密碼:")
     if len(pwd)<6 or len(pwd)>10:
         continue
     else:
         print "密碼輸入成功"
         information[user] = pwd
         f1 = open(‘user.txt‘, ‘wb‘)
         d = information
         pickle.dump(d,f1)
         f1.flush()
         f1.close()
         break
 else:
     print "密碼輸入成功"
     information[user] = pwd
     f1 = open(‘user.txt‘, ‘wb‘)
     d = information
     pickle.dump(d, f1)
     f1.flush()
     f1.close()

def registed():  # 註冊
    while 1:
        global user
        user = raw_input("請輸入您的註冊用戶名:")
        if user in information.keys():
            print "註冊失敗，請重新選擇"
            continue
        else:
            global password
            password = raw_input("請輸入您的註冊密碼:")
            pwdlen(password)
            print "註冊成功"
            break

def loginjudge():
    num = 3
    nums = 6
    user = raw_input(‘請輸入您的賬號: ‘)
    read_file = open(‘user.txt‘, ‘rb‘)
    information = pickle.load(read_file)
    read_file.close()
    while user not in information.keys():  # 帳號輸入三次報錯
        print "帳號不存在,你還有%s次機會，" % (nums - 3)
        user = raw_input("請重新輸入您的賬號: ")
        nums = nums - 1
        if nums > 3:
            if user not in information.keys():
                continue
        else:
            print "帳號輸入錯誤超過3次，退出系統"
            break
    else:
        while num >= 0:
            password = raw_input("請輸入登錄密碼：")
            if password == information[user]:
                print("歡迎用戶%s來到lcy系統！" % user)
                break
            elif num == 0:
                print ("對不起，您的密碼連續輸錯三次，請充值完再來")
                break
            else:
                print("密碼錯誤，請重新輸入密碼,你還有%s次機會") % (num)
            num = num - 1
        else:
            print ("對不起，您的密碼連續輸錯三次，請充值完再來")

def checkuser():
    while 1:
        read_file = open(‘user.txt‘, ‘rb‘)
        information = pickle.load(read_file)
        read_file.close()
        user=raw_input("請輸入你要查看的賬號:")
        if user not in information.keys():
         print "你輸入的賬號不存在"
         continue
        else:
          print "該賬號密碼為%s"%information[user]
          break

def chinfo():
    read_file = open(‘user.txt‘, ‘rb‘)
    information = pickle.load(read_file)
    read_file.close()
    global user
    user = raw_input("請輸入你要修改的用戶:")
    while user not in information.keys():
        user = raw_input("請重新輸入你要修改的用戶:")
        if user not in information.keys():
         print "此用戶不存在"
         continue
    else:
        a = input("1.修改用戶名;2.修改密碼;3.全部修改")
        if a == 1:
            newuser = raw_input("請輸入新的用戶名:")
            x = information[user]
            information.pop(user)
            information[newuser] = x
            f1 = open(‘user.txt‘, ‘wb‘)
            d = information
            pickle.dump(d, f1)
            f1.flush()
            f1.close()
            print "修改成功"
        elif a == 2:
            newpassword = raw_input("請輸入新的密碼:")
            pwdlen(newpassword)
            information[user] = newpassword
            print "修改成功"
        elif a == 3:
            newuser = raw_input("請輸入新的用戶名:")
            newpassword = raw_input("請輸入新的密碼:")
            pwdlen(newpassword)
            information[newuser] = newpassword
            information.pop(user)
            print "修改成功"

def checkall():
    try:
        read_file = open(‘user.txt‘, ‘r‘)
        information = pickle.load(read_file)
        print information
        read_file.close()
    except IOError:
        print "沒有用戶存在!"

def deluser():
    read_file = open(‘user.txt‘, ‘rb‘)
    information = pickle.load(read_file)
    read_file.close()
    print information
    while 1:
        deluser = raw_input("請選擇註銷的用戶名:")
        if deluser not in information:
            print "所選用戶不存在"
            break
        else:
            del information[deluser]
            f1 = open(‘user.txt‘, ‘wb‘)
            d = information
            pickle.dump(d, f1)
            f1.flush()
            f1.close()
            print "註銷成功!"
            break

def choose():
    while 1:
        try:
            choice =input("請選擇你的操作:1.註冊;2.登錄;3.修改個人信息;4.查看賬號;5.查看所有賬號;6.退出系統;7.註銷用戶:")
            if choice > 7 or choice < 1:
                print "無效選項,請重新選擇"
            elif choice == 1:
                print "你已經進入用戶註冊頁面"
                registed()
            elif choice == 2:
                print "你已經進入用戶登錄頁面"
                loginjudge()
            elif choice == 3:
                print "你已經進入用戶修改頁面"
                chinfo()
            elif choice == 4:
                checkuser()
            elif choice == 5:
                checkall()
            elif choice==6:
                print "你已經退出系統！"
                break
            else:
                deluser()
        except SyntaxError,reason:
            print reason
        except NameError,reason:
            print reason


choose()

登陸系統