Python连接Redis的基本配置方法

在Linux系统下Python连接Redis的基本配置方法具体操作步骤

系统环境：

OS：Oracle Linux Enterprise 5.6

Redis：redis-2.6.8

Python：Python-2.7.3

redis的python包版本：redis-2.7.2.tar

前提条件：

1.确保Redis已成功安装并且正确配置，参考文档

主从配置文档：

2.确保Python环境已成功配置，参考文档

配置python连接redis:

1.安装Redis的Python包：

使用easy-install安装，关于easy-install的配置，参考以上Python环境的搭建。

[root@njdyw bin]# easy_install2.7.3 redis
Searching for redis
Reading http://pypi.python.org/simple/redis/
Reading http://github.com/andymccurdy/redis-py
Best match: redis 2.7.2
Downloading http://pypi.python.org/packages/source/r/redis/redis-2.7.2.tar.gz#md5=17ac60dcf13eb33f82cc25974ab17157
Processing redis-2.7.2.tar.gz
Running redis-2.7.2/setup.py -q bdist_egg --dist-dir /tmp/easy_install-8FAlft/redis-2.7.2/egg-dist-tmp-JzQViJ
zip_safe flag not set; analyzing archive contents...
Adding redis 2.7.2 to easy-install.pth file
 
Installed /usr/local/python2.7.3/lib/python2.7/site-packages/redis-2.7.2-py2.7.egg
Processing dependencies for redis
Finished processing dependencies for redis

安装Parser包（可选）

说明：Parser可以控制如何解析redis响应的内容。redis-py包含两个Parser类，PythonParser和HiredisParser。默认，如果已经安装了hiredis模块，redis-py会使用HiredisParser，否则会使用PythonParser。

HiredisParser是C编写的，由redis核心团队维护，性能要比PythonParser提高10倍以上，所以推荐使用。安装方法，使用easy_install：

[root@njdyw ~]# easy_install2.7.3 hiredis
Searching for hiredis
Reading http://pypi.python.org/simple/hiredis/
Reading https://github.com/pietern/hiredis-py
Best match: hiredis 0.1.1
Downloading http://pypi.python.org/packages/source/h/hiredis/hiredis-0.1.1.tar.gz#md5=92128474f6fb027cfb8587fce724ea8e
Processing hiredis-0.1.1.tar.gz
Running hiredis-0.1.1/setup.py -q bdist_egg --dist-dir /tmp/easy_install-ZanSCB/hiredis-0.1.1/egg-dist-tmp-XCZBQ0
zip_safe flag not set; analyzing archive contents...
Adding hiredis 0.1.1 to easy-install.pth file
 
Installed /usr/local/python2.7.3/lib/python2.7/site-packages/hiredis-0.1.1-py2.7-linux-x86_64.egg
Processing dependencies for hiredis
Finished processing dependencies for hiredis

2.检查安装是否成功

--easy-install安装的扩展包默认在python的site-packages目录下

[root@njdyw ~]#whereis python2.7.3
python2.7: /bin/python2.7.3 /usr/local/python2.7.3
[root@njdyw ~]#cd /usr/local/python2.7.3/lib/python2.7/site-packages/
[root@njdyw site-packages]# ll

总计 408

-rw-r--r-- 1 root root  239 03-21 10:45 easy-install.pth
-rw-r--r-- 1 root root  119 03-21 10:07 README
-rw-r--r-- 1 root root 60401 03-21 10:45redis-2.7.2-py2.7.egg
-rw-r--r-- 1 root root 332125 03-21 10:12 setuptools-0.6c11-py2.7.egg
-rw-r--r-- 1 root root   30 03-21 10:12 setuptools.pth

可以看到redis-2.7.2-py2.7.egg包已经成功安装

3.测试连接

[root@njdyw site-packages]#python2.7.3
Python 2.7.3 (default, Mar 21 2013, 10:06:48)
[GCC 4.1.2 20080704 (Red Hat 4.1.2-50)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>>import redis
>>>redisClient=redis.StrictRedis(host='127.0.0.1',port=6379,db=0)
>>> redisClient.set('test_redis','Hello Python')
True
>>> value=redisClient.get('test_redis')
>>> print value
Hello Python
>>> redisClient.delete('test_redis')
True
>>> value=redisClient.get('test_redis')
>>> print value
None
 
 
>>> dir(redis)
['AuthenticationError', 'Connection', 'ConnectionError', 'ConnectionPool', 'DataError', 'InvalidResponse', 'PubSubError', 'Redis', 'RedisError', 'ResponseError', 'StrictRedis', 'UnixDomainSocketConnection', 'VERSION', 'WatchError', '__all__', '__builtins__', '__doc__', '__file__', '__loader__', '__name__', '__package__', '__path__', '__version__', '_compat', 'client', 'connection', 'exceptions', 'from_url', 'utils']
>>> redisClient=redis.StrictRedis(host='127.0.0.1',port=6379,db=0)
>>> dir(redisClient)
['RESPONSE_CALLBACKS', '__class__', '__contains__', '__delattr__', '__delitem__', '__dict__', '__doc__', '__format__', '__getattribute__', '__getitem__', '__hash__', '__init__', '__module__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__setitem__', '__sizeof__', '__str__', '__subclasshook__', '__weakref__', '_zaggregate', 'append', 'bgrewriteaof', 'bgsave', 'bitcount', 'bitop', 'blpop', 'brpop', 'brpoplpush', 'client_kill', 'client_list', 'config_get', 'config_set', 'connection_pool', 'dbsize', 'debug_object', 'decr', 'delete', 'echo', 'eval', 'evalsha', 'execute_command', 'exists', 'expire', 'expireat', 'flushall', 'flushdb', 'from_url', 'get', 'getbit', 'getrange', 'getset', 'hdel', 'hexists', 'hget', 'hgetall', 'hincrby', 'hincrbyfloat', 'hkeys', 'hlen', 'hmget', 'hmset', 'hset', 'hsetnx', 'hvals', 'incr', 'incrbyfloat', 'info', 'keys', 'lastsave', 'lindex', 'linsert', 'llen', 'lock', 'lpop', 'lpush', 'lpushx', 'lrange', 'lrem', 'lset', 'ltrim', 'mget', 'move', 'mset', 'msetnx', 'object', 'parse_response', 'persist', 'pexpire', 'pexpireat', 'ping', 'pipeline', 'pttl', 'publish', 'pubsub', 'randomkey', 'register_script', 'rename', 'renamenx', 'response_callbacks', 'rpop', 'rpoplpush', 'rpush', 'rpushx', 'sadd', 'save', 'scard', 'script_exists', 'script_flush', 'script_kill', 'script_load', 'sdiff', 'sdiffstore', 'set', 'set_response_callback', 'setbit', 'setex', 'setnx', 'setrange', 'shutdown', 'sinter', 'sinterstore', 'sismember', 'slaveof', 'smembers', 'smove', 'sort', 'spop', 'srandmember', 'srem', 'strlen', 'substr', 'sunion', 'sunionstore', 'time', 'transaction', 'ttl', 'type', 'unwatch', 'watch', 'zadd', 'zcard', 'zcount', 'zincrby', 'zinterstore', 'zrange', 'zrangebyscore', 'zrank', 'zrem', 'zremrangebyrank', 'zremrangebyscore', 'zrevrange', 'zrevrangebyscore', 'zrevrank', 'zscore', 'zunionstore']
>>>

4.测试实例：

(1).把文本数据导入到redis

--导入的数据格式

[root@njdyw ~]#more data.txt
wolys # wolysopen111 # [e-mail]
coralshanshan # 601601601 # [e-mail]
pengfeihuchao # woaidami # [e-mail]
simulategirl # @#$9608125 # [e-mail]
daisypp # 12345678 # [e-mail]
sirenxing424 # tfiloveyou # [e-mail]
raininglxy # 1901061139 # [e-mail]
leochenlei # leichenlei # [e-mail]
z370433835 # lkp145566 # [e-mail]

创建命令脚本

[root@njdyw ~]#cat imp_red.py
import redis
import re
pool = redis.ConnectionPool(host='127.0.0.1', port=6379)
r = redis.Redis(connection_pool=pool)
pipe = r.pipeline()
p=re.compile(r'(.*)\s#\s(.*)\s#\s(.*)');
pipe = r.pipeline()
f = open("data.txt")
matchs=p.findall(f.read())
for user in matchs:
  key='users_%s' %user[0].strip()
  pipe.hset(key,'pwd',user[1].strip()).hset(key,'email',user[2].strip())
pipe.execute()
f.close()

注意：要严格控制python脚本中的空格

--执行脚本

[root@njdyw ~]# python2.7.3 imp_red.py

查看导入数据

[root@njdyw ~]#redis-cli
redis 127.0.0.1:6379> keys *
 1) "users_xiaochuan2018"
 2) "users_coralshanshan"
 3) "users_xiazai200901"
 4) "users_daisypp"
 5) "users_boiny"
 6) "users_raininglxy"
 7) "users_fennal"
 8) "users_abc654468252"
 9) "users_babylovebooks"
10) "users_xl200811"
11) "users_baby19881018"
12) "users_darksoul0929"
13) "users_pengcfwxh"
14) "users_alex126126"
15) "users_jiongjiongmao"
16) "users_sirenxing424"
17) "users_mengjie007"
18) "users_cxx0409"
19) "users_candly8509"
20) "users_licaijun007"
21) "users_ai3Min2"
22) "users_bokil"
23) "users_z370433835"
24) "users_yiling1007"
25) "users_simulategirl"
26) "users_fxh852"
27) "users_baoautumn"
28) "users_huangdaqiao"
29) "users_q1718334567"
30) "users_xldq_l"
31) "users_beibeilong012"
32) "users_hudaoyin"
33) "users_yoyomika"
34) "users_jacksbalu"
35) "users_wolys"
36) "users_kangte1"
37) "users_demonhaodh"
38) "users_ysdz8"
39) "users_leochenlei"
40) "users_llx6888"
41) "users_pengfeihuchao"
redis 127.0.0.1:6379>
redis 127.0.0.1:6379>hget users_pengfeihuchao email
"[e-mail]"
redis 127.0.0.1:6379> hget users_llx6888 email
"[e-mail]"

好了，测试连接成功，如果你没有测试成功请认真看一下操作步骤