利用ConfigParser读取配置文件

#!/usr/bin/python

# -*- coding: utf-8 -*-

import ConfigParser

cf = ConfigParser.ConfigParser()

cf.read("cfg.txt")

# 获取所有sections。也就是将配置文件中所有“[ ]”读取到列表中：

s = cf.sections()

print ‘section:‘, s

# 获取指定section 的options。即将配置文件某个section 内key 读取到列表中：

o = cf.options("db")

print ‘options:‘, o

# 获取指定section 的配置信息。

v = cf.items("db")

print ‘db:‘, v

# 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

cf.set("db", "db_pass", "zhaowei")

cf.write(open("cfg.txt", "w"))

# 添加一个section。（同样要写回）

‘‘‘

cf.add_section(‘liuqing‘)

cf.set(‘liuqing‘, ‘int‘, ‘15‘)

cf.set(‘liuqing‘, ‘bool‘, ‘true‘)

cf.set(‘liuqing‘, ‘float‘, ‘3.1415‘)

cf.set(‘liuqing‘, ‘baz‘, ‘fun‘)

cf.set(‘liuqing‘, ‘bar‘, ‘Python‘)

cf.set(‘liuqing‘, ‘foo‘, ‘%(bar)s is %(baz)s!‘)

cf.write(open("cfg.txt", "w"))

‘‘‘

# 移除section 或者option 。（只要进行了修改就要写回的哦）

# cf.remove_option(‘liuqing‘,‘int‘)

cf.remove_section(‘liuqing‘)

cf.write(open("cfg.txt", "w"))