python 入门（2）字典的使用,伪查询系统

#coding=utf-8
import sys
user = {'user':'jshand',
        'pass':'123'
        }
userName  = None

#登录系统
def login():
    userName = raw_input("login user:\n")
    if user['user'] == userName:
        checkpassword()
    else:
        print 'user is error!'
        login()

#验证密码
def checkpassword():
    password = raw_input("login password:\n")
    if user['pass'] == password:
        logon()
    else:
        print 'password is error!'
        checkpassword()

		
		
#登录成功后进入查询  
def logon():
    print 'hello %s' % userName
    query()
    
    
dict = {
        'tt'        :'她是一个麻醉医生(*^__^*) 嘻嘻……',
        'jinshan'   :'他是干it的O(∩_∩)O哈哈~',
        'mama'      :'家庭主妇~~~~(>_<)~~~~',
        }   


#查询系统 输入key 显示查询内容		
def query():
    queryKey = raw_input("Pleas input Your key\n")
    if queryKey =='exit' or queryKey =='quite':
         print 'Exit Success ,Bye!'
         sys.exit()
    if queryKey in dict.keys():
             print 'Query thing is %s' %(dict[queryKey])
             query()
    else:
        print 'Query Key is not exists  for key %s' %(queryKey)
        query()


		
#启动系统.....
login()