Python读取修改ini配置文件[ConfigParser]

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使用到的包：ConfigParser 文档

代码托管位置 github-pytools

需求

写个项目，用到数据库，多个地方使用，不能硬编码。很类似java的properties文件

Python支持ini文件的读取

ini文件

db_config.ini

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

示例代码

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#!/usr/bin/python
# -*- coding:utf-8 -*-
#author: lingyue.wkl
#desc: use to db ops
#---------------------
#2012-02-18 created
#---------------------
 
importsys,os
importConfigParser
deftest(config_file_path):
    cf=ConfigParser.ConfigParser()
    cf.read(config_file_path)
 
    s=cf.sections()
    print'section:',s
 
    o=cf.options("baseconf")
    print'options:',o
 
    v=cf.items("baseconf")
    print'db:',v
 
    db_host=cf.get("baseconf","host")
    db_port=cf.getint("baseconf","port")
    db_user=cf.get("baseconf","user")
    db_pwd=cf.get("baseconf","password")
 
    printdb_host,db_port,db_user,db_pwd
 
    cf.set("baseconf","db_pass","123456")
    cf.write(open("config_file_path","w"))
if__name__=="__main__":
    test("../conf/db_config.ini")

通用模块init_op.py

支持命令行+import两种

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#!/usr/bin/python
# -*- coding:utf-8 -*-
#author: lingyue.wkl
#desc: use to read ini
#---------------------
#2012-02-18 created
#2012-09-02 changed for class support
#---------------------
importsys,os,time
importConfigParser
 
classConfig:
    def__init__(self,path):
        self.path=path
        self.cf=ConfigParser.ConfigParser()
        self.cf.read(self.path)
    defget(self,field,key):
        result=""
        try:
            result=self.cf.get(field,key)
        except:
            result=""
        returnresult
    defset(self,filed,key,value):
        try:
            self.cf.set(field,key,value)
            cf.write(open(self.path,'w'))
        except:
            returnFalse
        returnTrue
 
defread_config(config_file_path,field,key):
    cf=ConfigParser.ConfigParser()
    try:
        cf.read(config_file_path)
        result=cf.get(field,key)
    except:
        sys.exit(1)
    returnresult
 
defwrite_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)
    returnTrue
 
if__name__=="__main__":
  iflen(sys.argv)  4:
      sys.exit(1)
 
  config_file_path=sys.argv[1]
  field=sys.argv[2]
  key=sys.argv[3]
  iflen(sys.argv)==4:
      printread_config(config_file_path,field,key)
  else:
      value=sys.argv[4]
      write_config(config_file_path,field,key,value)

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