Python读取ini配置文件

db_config.ini
[baseconf]
host=127.0.0.1
port=3306
user=root
password=root
db_name=evaluting_sys
[concurrent]
processor=20  

python代码

 1 对应的python代码
 2 import sys,os
 3 import ConfigParser
 4
 5 class Db_Connector:
 6   def __init__(self, config_file_path):
 7     cf = ConfigParser.ConfigParser()
 8     cf.read(config_file_path)
 9
10     s = cf.sections()
11     print ‘section:‘, s
12
13     o = cf.options("baseconf")
14     print ‘options:‘, o
15
16     v = cf.items("baseconf")
17     print ‘db:‘, v
18
19     db_host = cf.get("baseconf", "host")
20     db_port = cf.getint("baseconf", "port")
21     db_user = cf.get("baseconf", "user")
22     db_pwd = cf.get("baseconf", "password")
23
24     print db_host, db_port, db_user, db_pwd
25
26     cf.set("baseconf", "db_pass", "123456")
27     cf.write(open("config_file_path", "w"))
28 if __name__ == "__main__":
29   f = Db_Connector("../conf/db_config.ini")  

通用模块：支持命令行+import两种形式

import sys,os,time
import ConfigParser  

class Config:
    def __init__(self, path):
        self.path = path
        self.cf = ConfigParser.ConfigParser()
        self.cf.read(self.path)
    def get(self, field, key):
        result = ""
        try:
            result = self.cf.get(field, key)
        except:
            result = ""
        return result
    def set(self, filed, key, value):
        try:
            self.cf.set(field, key, value)
            cf.write(open(self.path,‘w‘))
        except:
            return False
        return True  

def read_config(config_file_path, field, key):
    cf = ConfigParser.ConfigParser()
    try:
        cf.read(config_file_path)
        result = cf.get(field, key)
    except:
        sys.exit(1)
    return result  

def write_config(config_file_path, field, key, value):
    cf = ConfigParser.ConfigParser()
    try:
        cf.read(config_file_path)
        cf.set(field, key, value)
        cf.write(open(config_file_path,‘w‘))
    except:
        sys.exit(1)
    return True  

if __name__ == "__main__":
   if len(sys.argv) < 4:
      sys.exit(1)  

   config_file_path = sys.argv[1]
   field = sys.argv[2]
   key = sys.argv[3]
   if len(sys.argv) == 4:
      print read_config(config_file_path, field, key)
   else:
      value = sys.argv[4]
      write_config(config_file_path, field, key, value)