python连接redis
redis的安装可以参考前一篇，本文采用python2.7.4和python3.3.1作为测试，我的系统是ubuntu，默认的python是python2。
先安装redis-py
wget https://github.com/shuxiang/redis-py/archive/master.zip unzip master.zip > /dev/null cd redis-py-master/ sudo python setup.py install sudo python3 setup.py install
需要注意的是，python2和python3需要分别安装redis-py，否则另一个python不能用。然后看一下python2.7.4的代码
# 20140118, redis_test.py import sys print(sys.version) import platform print(platform.python_version()) import redis r = redis.StrictRedis(host='localhost', port=6379, db=0) r2 = redis.StrictRedis(host='localhost', port=6379, db=0) print(">>>>>>>>>>TEST REDIS LIST>>>>>>>>>>") r.lpush("list1",3) r.lpush("list1",2) r.lpush("list1",1) r.rpush("list1",4) r2.rpush("list1",5) print(r.lrange("list1",0,-1)) print(r.llen("list1")) r.ltrim("list1",0,2) print(r.lrange("list1",0,-1)) print(r.lindex("list1",1)) print("TEST " + (r.type("list1")) + " END") r.delete("list1") print(">>>>>>>>>>TEST REDIS STRING>>>>>>>>>>") r.set("str1", '1234567890') print(r2.get("str1")) print("TEST " + (r.type("str1")) + " END") r.delete("str1") print (">>>>>>>>>>TEST REDIS SET>>>>>>>>>>") r.sadd("set1","222") r.sadd("set1","111") r.sadd("set1","333") print(r.scard("set1")) print(r.smembers("set1")) r2.sadd("set2","444") r2.sadd("set2","333") r2.sadd("set2","555") print(r.sunion("set1","set2")) print(r.sinter("set1","set2")) print("TEST " + (r.type("set1")) + " END") r.delete("set1") r.delete("set2") print(">>>>>>>>>>TEST REDIS ZSET>>>>>>>>>>") r.zadd("sort1",2,"222") r.zadd("sort1",1,"111") r.zadd("sort1",3,"333") print(r.zrange("sort1",0,-1)) print(r.zrangebyscore("sort1",2,3)) print(r.zrangebyscore("sort1",2,-1)) print("TEST " + (r.type("sort1")) + " END") r.delete("sort1") print(">>>>>>>>>>TEST REDIS HASH TABLE>>>>>>>>>>") r.hset("hash1","key1",1) r.hset("hash1","key2",2) r.hset("hash1","key3",3) print(r.hget("hash1","key2")) print(r.hkeys("hash1")) print(r.hexists("hash1","key4")) r.hdel("hash1","key2") print(r.hget("hash1","key2")) print(r.hkeys("hash1")) print("TEST " + (r.type("hash1")) + " END") r.delete("hash1") print(r.keys())
运行结果如下
2.7.4 (default, Sep 26 2013, 03:20:26) [GCC 4.7.3] 2.7.4 >>>>>>>>>>TEST REDIS LIST>>>>>>>>>> ['1', '2', '3', '4', '5'] 5 ['1', '2', '3'] 2 TEST list END >>>>>>>>>>TEST REDIS STRING>>>>>>>>>> 1234567890 TEST string END >>>>>>>>>>TEST REDIS SET>>>>>>>>>> 3 set(['111', '222', '333']) set(['555', '111', '222', '333', '444']) set(['333']) TEST set END >>>>>>>>>>TEST REDIS ZSET>>>>>>>>>> ['111', '222', '333'] ['222', '333'] [] TEST zset END >>>>>>>>>>TEST REDIS HASH TABLE>>>>>>>>>> 2 ['key1', 'key2', 'key3'] False None ['key1', 'key3'] TEST hash END []
还有python3.3.1的代码
# 20140118, redis_test_python3.py import sys print(sys.version) import platform print(platform.python_version()) import redis r = redis.StrictRedis(host='localhost', port=6379, db=0) r2 = redis.StrictRedis(host='localhost', port=6379, db=0) print(">>>>>>>>>>TEST REDIS LIST>>>>>>>>>>") r.lpush("list1",3) r.lpush("list1",2) r.lpush("list1",1) r.rpush("list1",4) r2.rpush("list1",5) print(r.lrange("list1",0,-1)) print(r.llen("list1")) r.ltrim("list1",0,2) print(r.lrange("list1",0,-1)) print(r.lindex("list1",1)) print('TEST %s END' % (r.type("list1"))) r.delete("list1") print(">>>>>>>>>>TEST REDIS STRING>>>>>>>>>>") r.set("str1", '1234567890') print(r2.get("str1")) print('TEST %s END' % (r.type("str1"))) r.delete("str1") print (">>>>>>>>>>TEST REDIS SET>>>>>>>>>>") r.sadd("set1","222") r.sadd("set1","111") r.sadd("set1","333") print(r.scard("set1")) print(r.smembers("set1")) r2.sadd("set2","444") r2.sadd("set2","333") r2.sadd("set2","555") print(r.sunion("set1","set2")) print(r.sinter("set1","set2")) print('TEST %s END' % (r.type("set1"))) r.delete("set1") r.delete("set2") print(">>>>>>>>>>TEST REDIS ZSET>>>>>>>>>>") r.zadd("sort1",2,"222") r.zadd("sort1",1,"111") r.zadd("sort1",3,"333") print(r.zrange("sort1",0,-1)) print(r.zrangebyscore("sort1",2,3)) print(r.zrangebyscore("sort1",2,-1)) print('TEST %s END' % (r.type("sort1"))) r.delete("sort1") print(">>>>>>>>>>TEST REDIS HASH TABLE>>>>>>>>>>") r.hset("hash1","key1",1) r.hset("hash1","key2",2) r.hset("hash1","key3",3) print(r.hget("hash1","key2")) print(r.hkeys("hash1")) print(r.hexists("hash1","key4")) r.hdel("hash1","key2") print(r.hget("hash1","key2")) print(r.hkeys("hash1")) print('TEST %s END' % (r.type("hash1"))) r.delete("hash1") print(r.keys())
运行结果如下
3.3.1 (default, Sep 25 2013, 19:29:01) [GCC 4.7.3] 3.3.1 >>>>>>>>>>TEST REDIS LIST>>>>>>>>>> [b'1', b'2', b'3', b'4', b'5'] 5 [b'1', b'2', b'3'] b'2' TEST b'list' END >>>>>>>>>>TEST REDIS STRING>>>>>>>>>> b'1234567890' TEST b'string' END >>>>>>>>>>TEST REDIS SET>>>>>>>>>> 3 {b'222', b'111', b'333'} {b'222', b'555', b'444', b'111', b'333'} {b'333'} TEST b'set' END >>>>>>>>>>TEST REDIS ZSET>>>>>>>>>> [b'111', b'222', b'333'] [b'222', b'333'] [] TEST b'zset' END >>>>>>>>>>TEST REDIS HASH TABLE>>>>>>>>>> b'2' [b'key1', b'key2', b'key3'] False None [b'key1', b'key3'] TEST b'hash' END []
可以发现，python2和python3的输出还是有一些不同的，但这些不同应该是print函数调用__str__的时候引起的差异，程序本身的功能应该没有什么差异。
同时可以对比一下前一篇中ruby的redis api函数，可以看出与python基本是一致的，真的是很难得。
