redis数据库操作

首先要pip install redis

import redis,jsonip=‘211.149.218.16‘port=6379db=0passwd=‘123456‘r = redis.Redis(host=ip,port=port,db=db,password=passwd)#链接 redisr.set(‘name‘,‘nhy‘)#如果key一样则冲掉原来的值r.set(‘name‘,[1,2,3,4])#r.set(‘name‘,{‘name‘:‘hehehe‘})name = r.get(‘name‘)name.decode()#转成字符串，字符串类型，redis里面存的都是字符串，bytes类型的，要用decode()转成字符串new_name = json.loads(name.decode())#用json转成listprint(name)print(new_name)print(type(new_name))r.setex(‘nhy‘,‘lingyul‘,10)#设置key, value和失效时间秒r.mset(name=‘hh‘,age=‘18‘)#批量set值,批量设置不能设置失效时间print(r.keys(‘*n*‘))#打印所有key

#哈希类型的keyr.hset(‘lingyul‘,‘user‘,‘lingyul‘)#r.hset(‘key‘,‘key‘,‘value‘)得到的结果是:# row key value# 1   user lingyulprint(r.hget(‘lingyul‘,‘user‘))#单独获取指定的name的值r.hgetall(‘lingyul‘)#全部获取r.delete(‘key‘)#吧整个key都删掉r.hdel(‘lingyul‘,‘user‘)#删除指定的key

r.set(‘user:lingyul‘,‘hahaha‘)#如果设置的key里面有冒号，则先建立冒号左边的为文件夹，文件夹下面有key和value,哈希类型也一样