python模块之ConfigParser ini

在程序中使用配置文件来灵活的配置一些参数是一件很常见的事情,配置文件的解析并不复杂,在python里更是如此,在官方发布的库中就包含有做这件事情的库,那就是ConfigParser,这里简单的做一些介绍。
    ConfigParser解析的配置文件的格式比较象ini的配置文件格式,就是文件中由多个section构成,每个section下又有多个配置项,比如:

[db]
db_host=127.0.0.1
db_port=3306
db_user=root
db_pass=password
[concurrent]
thread=10
processor=20

    假设上面的配置文件的名字为test.conf。里面包含两个section,一个是db, 另一个是concurrent, db里面还包含有4项,concurrent里面有两项。这里来做做解析:
         
           #-*- encoding: gb2312 -*-
import ConfigParser
import
string, os, sys

cf
=
ConfigParser.ConfigParser()
cf.read(
"test.conf"
)
# 返回所有的section

s = cf.sections()
print 'section:'
, s

o
= cf.options("db"
)
print 'options:'
, o

v
= cf.items("db"
)
print 'db:'
, v

print '-'*60

#可以按照类型读取出来
db_host = cf.get("db", "db_host")
db_port
= cf.getint("db", "db_port"
)
db_user
= cf.get("db", "db_user"
)
db_pass
= cf.get("db", "db_pass"
)

# 返回的是整型的

threads = cf.getint("concurrent", "thread")
processors
= cf.getint("concurrent", "processor"
)

print "db_host:"
, db_host
print "db_port:"
, db_port
print "db_user:"
, db_user
print "db_pass:"
, db_pass

print "thread:"
, threads
print "processor:"
, processors
#修改一个值,再写回去

cf.set("db", "db_pass", "zhaowei")
cf.write(open(
"test.conf", "w"))
 

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