r.set('2', '4028b2883d3f5a8b013d57228d760a93')
#成功就返回True 失败就返回False，下面的20表示是20秒
print r.expire('2',20)
#如果时间没事失效我们能得到键为2的值，否者是None
print r.get('2')

# coding=utf-8 
''' 
Created on 2015-9-8 
 
@author: kwsy 
''' 
import redis 
import datetime 
import time 
 
pool=redis.ConnectionPool(host='192.168.1.126',port=6379,db=0) 
r = redis.StrictRedis(connection_pool=pool) 
extime = datetime.datetime(2015,9,8,15,19,10) 
print r.expire('ex1', 10) 
print extime.strftime('%Y-%m-%d %H:%M:%S %f')  
print r.expireat('ex2', extime)