python用户管理系统

#!/usr/bin/env python
#coding:utf-8

info = """
************************************************************
      用户登录管理系统
************************************************************

     1. 注册新用户
     2. 用户登录
     3. 用户注销
     4. 用户信息显示
     5. 退出系统
"""
userinfo = {

 'root': {
  'name': 'root','password': 'redhat','gender': 1,'email': '','age': 12
 },}

gender_choice = [0,1,2]

def CreateUser():
 print "注册用户界面".center(50,'*')
 name = raw_input("*注册用户名:")
 if name in userinfo:
  print "用户已存在，请更换注册名"
 else:
  password = raw_input("*用户密码:")
  while True:
   gender = input("*性别(0-男 1-女 2-其他):")
   if gender in gender_choice:
    break
   else:
    print "请输入正确的选择"

  email = raw_input("用户邮箱:")
  if not email:
   email = None
  age = raw_input("年龄:")
  if not age:
   age = None
  else:
   age = int(age)
  userinfo[name] = {
   'name': name,'password': password,'gender': gender,'email': email,'age':  age,}
  print "%s 用户注册成功!!!" % (name)

def UserLogin():
 print "用户登录界面".center(50,'*')
 trycount = 0
 while trycount < 3:
  name = raw_input("登录用户名：")
  if name not in userinfo:
   print "用户未注册"
   break
  password = raw_input("登录密码：")
  trycount += 1
  if password == userinfo[name]['password']:
   print "恭喜%s登录成功" % (name)
   break
  else:
   print "请输入正确的用户名或密码！"
 else:
  print "已登录三次，请稍后再试"


def DeleteUser():
 print "用户注销界面".center(50,'*')
 name = raw_input("注销用户名：")
 if name not in userinfo:
  print "用户未注册"
 else:
  password = raw_input("登录密码：")
  if password == userinfo[name]['password']:
   userinfo.pop(name)
   print "恭喜注销%s成功" % (name)

def UserInfo():
 for key,value in userinfo.items():
  print "用户:%s" % (key),print "性别:%d" % (value['gender']),print "邮箱:%s" % (value['email']),print "年龄:%s" % (value['age']),print "nn"

def main():
 while True:
  print info
  choice = raw_input("Choice:").strip()
  if choice == "1":
   CreateUser()
  elif choice == "2":
   UserLogin()
  elif choice == "3":
   DeleteUser()
  elif choice == "4":
   UserInfo()
  elif choice == "5":
   exit()
  else:
   print "输入正确的选择"

main()