Python模块: ConfigParser

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：

1 #-*- encoding: gb2312 -*-
2 import ConfigParser
3 import string, os, sys
4
5 cf = ConfigParser.ConfigParser()
6 cf.read("test.conf")
7 # 返回所有的section
8 s = cf.sections()
9 print 'section:', s
10
11 o = cf.options("db")
12 print 'options:', o
13
14 v = cf.items("db")
15 print 'db:', v
16
17 print '-'*60
18 #可以按照类型读取出来
19 db_host = cf.get("db", "db_host")
20 db_port = cf.getint("db", "db_port")
21 db_user = cf.get("db", "db_user")
22 db_pass = cf.get("db", "db_pass")
23
24 # 返回的是整型的
25 threads = cf.getint("concurrent", "thread")
26 processors = cf.getint("concurrent", "processor")
27
28 print "db_host:", db_host
29 print "db_port:", db_port
30 print "db_user:", db_user
31 print "db_pass:", db_pass
32
33 print "thread:", threads
34 print "processor:", processors
35 #修改一个值，再写回去
36 cf.set("db", "db_pass", "zhaowei")
37 cf.write(open("test.conf", "w"))

 

参考：

def read_hotfix_cfg(cfg_file):
print "----Reading the hotfix cfg file----"
cfg_file = "./mgmt/hotfixes/"+cfg_file
if not os.path.isfile(cfg_file):
print "The config file is not exist"
return False

try:
cfg = configobj.ConfigObj(cfg_file, encoding='UTF8')
except Exception, e:
print "The cfg_file is wrong: ",
print e
return False

elements_path = []
hf_elements = 'file_build_path'
if cfg.has_key(hf_elements):
elements_path = cfg[hf_elements].strip().split('\n')
else:
print "The [file_bulid_path] is not in the cfg file"
return False

global VERSIONS, SRC_TREE
if cfg.has_key('versions'):
VERSIONS = str(cfg['versions'])
SRC_TREE = VERSIONS + "-rpl2sles-upgrade"
else:
print "The [versions] is not in the cfg file"
return False