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    python如何连接redis

    爱喝马黛茶的安东尼爱喝马黛茶的安东尼2019-10-10 10:59:47原创3183

    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。

    主从配置文档:

    //www.jb51.net/article/147397.htm

    (2)确保Python环境已成功配置。

    https://www.jb51.net/article/109765.htm

    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。

    相关推荐:《Python教程

    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 # wolys@21cn.com
    coralshanshan # 601601601 # zss1984@126.com
    pengfeihuchao # woaidami # 294522652@qq.com
    simulategirl # @#$9608125 # simulateboy@163.com
    daisypp # 12345678 # zhoushigang_123@163.com
    sirenxing424 # tfiloveyou # sirenxing424@126.com
    raininglxy # 1901061139 # lixinyu23@qq.com
    leochenlei # leichenlei # chenlei1201@gmail.com
    z370433835 # lkp145566 # 370433835@qq.com

    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
    "294522652@qq.com"
    redis 127.0.0.1:6379> hget users_llx6888 email
    "linlixian200606@126.com"

    好了,测试连接成功。

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