python3 利用configparser生成和读取配置文件

利用configparser生成和读取配置文件

#Author by Andy
#_*_ coding:utf-8 _*_
import configparser
'''
配置文件格式
groupname：
item_key1=value
item_key2=value
'''
def create_config():
    '''生成配置文件'''
    cf = configparser.ConfigParser()
    i = 1
    groupname = ['group1','group2','group3','group4']
    for g in groupname:
        # cf.add_section('groupname') 添加组名
        cf.add_section(g)
        for i in range(10):
            # cf.set('groupname','item_key','value') #在已有组名下添加item和value信息
            cf.set(g,'ip%s'%i,'10.1.2.'+str((1+i)))
            cf.set(g,'host%s'%i,'host%s'%i)
    cf.write(open('config','w'))#写入配置文件

def read_config():
    ''' 读取配置文件'''
    cf = configparser.ConfigParser()
    # read config
    cf.read("config")
    sec =cf.sections() #groupname list
    print(sec)
    # ['group1', 'group2', 'group3', 'group4']
    opts = cf.options('group1')#item_key list
    print(opts)
    # ['ip0', 'host0', 'ip1', 'host1', 'ip2', 'host2', 'ip3', 'host3', 'ip4', 'host4', 'ip5', 'host5', 'ip6', 'host6',
     # 'ip7', 'host7', 'ip8', 'host8', 'ip9', 'host9']
    kvs = cf.items('group1')  #返回由item_key,value元组所构成的列表[（item_key,value）]
    print(kvs)
    # [('ip0', '10.1.2.1'), ('host0', 'host0'), ('ip1', '10.1.2.2'), ('host1', 'host1'), ('ip2', '10.1.2.3'),
     # ('host2', 'host2'), ('ip3', '10.1.2.4'), ('host3', 'host3'),]
read_config()

配置文件格式

[group1]
ip0 = 10.1.2.1
host0 = host0
ip1 = 10.1.2.2
host1 = host1

[group2]
ip0 = 10.1.2.1
host0 = host0
ip1 = 10.1.2.2
host1 = host1