将redis的keys和values的一些数据结构扫了一遍，跃跃欲试code里访问一把，由于基本所有编程语言接口redis都支持，就还是找个使用性和可读性比较优雅的python来试水
下载安装python模块
wget https://pypi.python.org/packages/source/r/redis/redis-2.10.3.tar.gz tar zxvf redis-2.10.3.tar.gz cd redis-2.10.3 python setup.py install
模块源代码里INSTALL文档写的很清楚，直接install即可；但是奇怪的是验证一下居然报错
[lihui@localhost ~]# cat myredis.py
#!/usr/bin/env python
import redis
r = redis.StrictRedis(host = '127.0.0.1', port = 6379, db = 0)
r.set('lihui', '30')
[lihui@localhost ~]# python myredis.py
Traceback (most recent call last):
File "/home/lihui/myredis.py", line 3, in <module>
import redis
File "build/bdist.linux-x86_64/egg/redis/__init__.py", line 1, in <module>
File "build/bdist.linux-x86_64/egg/redis/client.py", line 6, in <module>
File "/usr/lib64/python2.6/threading.py", line 45, in <module>
module='threading', message='sys.exc_clear')
File "/usr/lib64/python2.6/warnings.py", line 50, in filterwarnings
import re
File "/home/lihui/re.py", line 5, in <module>
#
AttributeError: 'module' object has no attribute 'StrictRedis'
看这样子，好像没安装成功，但是更让人纳闷的是，切换称root，换个目录交互式又不会报错
[root@localhost ~]# python
Python 2.6.6 (r266:84292, Jan 22 2014, 09:42:36)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-4)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import redis
>>> r = redis.StrictRedis(host = 'localhost', port = 6379, db = 0)
>>> r.set('lihui', '30')
True
>>> r.get('lihui')
'30'
>>>
突然之间感到十分惆怅，什么玩意？仔细审查错误信息中，re.py映入了眼帘，这个文件已经重命名了，为什么还会这个文件报错，难道有中间文件？
[lihui@localhost ~]# ll /home/lihui/re.pyc -rw-r--r--. 1 lihui lihui 277 Feb 13 20:48 /home/lihui/re.pyc [lihui@localhost ~]# date Fri Feb 13 20:54:49 CST 2015
OMG，果然不出所料，pyc是二进制文件，主要是加载速度快，执行这个python脚本居然会pyc也以文件形式存在，不用犹豫删掉他肯定就对了
[lihui@localhost ~]# rm -f /home/lihui/re.pyc [lihui@localhost ~]# python /home/lihui/myredis.py True
终于执行正确，下面验证下数据库添加的这个key和value
[lihui@localhost ~]# python myredis.py True [root@localhost ~]# redis-cli 127.0.0.1:6379> keys * 1) "lihui" 127.0.0.1:6379> sget lihui (error) ERR unknown command 'sget' 127.0.0.1:6379> get lihui "30" 127.0.0.1:6379>
可见直接就可以操作redis数据库，而且是十分方便，并且python模块里的方法也跟redis数据结构的操作的方法名一样，这也许就是为什么python惹人喜欢的原因
其它还有不明白的可以查看官方网页：https://pypi.python.org/pypi/redis/2.10.3
上面的列子中可以看出，仅仅通过下面这一句
r = redis.StrictRedis(host = '127.0.0.1', port = 6379, db = 0)
就能通过对象 r 来随意操作数据库，来找找StrictRedis是啥子玩意，如何定义的
[lihui@localhost ~]# grep StrictRedis /home/lihui/redis-2.10.3/* -R /home/lihui/redis-2.10.3/build/lib/redis/__init__.py:from redis.client import Redis, StrictRedis /home/lihui/redis-2.10.3/build/lib/redis/__init__.py: 'Redis', /home/lihui/redis-2.10.3/build/lib/redis/client.py:class StrictRedis(object): /home/lihui/redis-2.10.3/build/lib/redis/client.py:class Redis(StrictRedis):
找到client.py查看
[lihui@localhost ~]# vim /home/lihui/redis-2.10.3/redis/client.py
class StrictRedis(object):
"""
Implementation of the Redis protocol.
This abstract class provides a Python interface to all Redis commands
and an implementation of the Redis protocol.
可见StrictRedis是封装了所有命令行上操作redis的命令的类，所以才能调用一切数据库操作方法
