python操作三大主流数据库(12)python操作redis的api框架redis-py简单使用
redispy安装
安装及简单使用：https://github.com/andymccurdy/redis-py
api参考文档：http://redis-py.readthedocs.io/en/latest/
1.安装redis-py
pip install redis C:\Users\ajie>workon flask (flask) C:\Users\ajie>d: (flask) d:\python_envs\flask>pip install redis
2.简单测试
#coding:utf-8import redis# redis.Redis()兼容老版本，redis.StrictRedis()不考虑兼容性 r = redis.Redis(host='localhost', port=6379, db=0) # r = redis.StrictRedis(host = 'localhost', port=6379, db=0) user1 = r.get('user1') print(user1)(flask) d:\python_envs\flask>python python_redis.py b'jhon'
3.python操作redis的常用方法
#coding:utf-8import redisclass Base(object):def __init__(self):self.r = redis.StrictRedis(host = 'localhost', port=6379, db=0)class StringTest(object):def __init__(self):# redis.Redis()兼容老版本，redis.StrictRedis()不考虑兼容性# self.r = redis.Redis(host='localhost', port=6379, db=0)self.r = redis.StrictRedis(host = 'localhost',port=6379, db=0,decode_responses=True)def test_set(self):''' set -- 设置值 '''rest = self.r.set('user2', 'amy')print(rest)return restdef test_get(self):'''get -- 获取值'''rest = self.r.get('user2')print(rest)return restdef test_mset(self):''' mset -- 设置多个键值对 '''d = {'user3': 'Bob','user4': 'Bobx'}rest = self.r.mset(d)print(rest)return restdef test_mget(self):''' mset -- 设置多个键值对 '''d = ['user3','user4']rest = self.r.mget(d)print(rest)return restdef test_del(self):''' del删除键值 '''rest = self.r.delete('user3')print(rest)def test_push(self):''' lpush/rpush -- 从左/右插入数据 '''t = ['Amy', 'Jhon']# 如果不加*则会把两个元素当做整体存入rest = self.r.lpush('l_eat3', *t)print(rest)rest = self.r.lrange('l_eat3', 0, -1)print(rest)def test_pop(self):''' lpop/rpop 移除最左/右边的元素并返回值'''rest = self.r.lpop('l_eat3')print(rest)rest = self.r.lrange('l_eat3', 0, -1)print(rest)class SetTest(Base):def test_sadd(self):''' sadd --添加元素 '''l = ['cat', 'dog', 'monkey']# rest = self.r.sadd('zoo2', l)rest = self.r.sadd('zoo2', *l)print(rest)rest = self.r.smembers('zoo2')print(rest)def test_srem(self):''' srem -- 删除元素 '''rest = self.r.srem('zoo2', 'monkey')print(rest)rest = self.r.smembers('zoo2')print(rest)def test_sinter(self):''' sinter --返回元素的交集 '''rest = self.r.sinter('zoo2', 'zoo1')print(rest)class HashTest(Base):def hset_test(self):''' hset设置新闻内容 self.r.hset(1,'title','朝鲜特种部队视频公布展示士兵身体素质与意志')self.r.hset(1,'content','content01')self.r.hset(1,'img_url','/static/img/news/01.png')self.r.hset(1,'is_valid','true')self.r.hset(1,'news_type','推荐')self.r.hset(2,'title','男子长得像\"祁同伟\"挨打 打人者:为何加害检察官')self.r.hset(2,'content','因与热门电视剧中人物长相相近,男子竟然招来一顿拳打脚踢。4月19日,打人男子周某被抓获。半个月前,酒后的周某看到KTV里有一名男子很像电视剧中的反派。二话不说,周某冲上去就问你为什么要加害检察官?男子莫名其妙,回了一句神经病。周某一听气不打一处来,对着男子就是一顿拳打脚踢,嘴里面还念叨着,“叫你加害检察官,我打死你!”随后,周某趁机逃走。受伤男子立即报警,周某被上海警方上网通缉')self.r.hset(2,'img_url','/static/img/news/02.png')self.r.hset(2,'is_valid','true')self.r.hset(2,'news_type','百家')'''''' mset/mget -- 设置/获取散列值'''rest = self.r.hset('stu:002','name','tom')print(rest)rest = self.r.hexists('stu:002','name')print(rest)rest = self.r.hget('stu:002', 'name')print(rest)def mset_test(self):''' 获取新闻的数据 '''# rest = self.r.hget(1,'title')# print(rest.decode('utf-8'))# rest = self.r.hget(1, 'news_type')# print(rest.decode('utf-8'))# rest = self.r.hget(3,'title')# print(rest.decode('utf-8'))# rest = self.r.hget(3, 'news_type')# print(rest.decode('utf-8'))# mset和hkeysm = {'name':'lily','age':18,'grade':90}rest = self.r.hmset('stu:003', m)print(rest)rest = self.r.hkeys('stu:003')print(rest)rest = self.r.hvals('stu:003')print(rest)def test_hgetall(self):data = self.r.hgetall('news:3')print(data['title'].decode('utf-8'))print(data['content'].decode('utf-8'))def main():# st = StringTest()# st.test_set()# st.test_get()# st.test_mset()# st.test_mget()# st.test_del()# st.test_push()# st.test_pop()# set_test = SetTest()# set_test.test_sadd()# set_test.test_srem()# set_test.test_sinter() ht = HashTest()# ht.mset_test()# ht.hset_test()# ht.hget_test() ht.test_hgetall()if __name__ == "__main__":main()
