配置文件

# 使用配置文件 # why ：给程序提供一些默认的或个性化的全局参数 # what： 分块kv存储，默认形式有 ini，conf, cfg # how : configparse, http://devdocs.io/python~3.6/library/configparser #[DEFAULT] # section 章节 特殊的章节

import configparser base_dir = r‘D:\python全站‘ config = configparser.ConfigParser() config[‘DEFAULT‘] = {‘base_dir‘:‘D:\python全站‘} config_path = os.path.join(base_dir, ‘common.ini‘) with open(config_path, ‘w‘) as f:     config.write(f)

---------------------------------------------------------------------------  NameError                                 Traceback (most recent call last)  <ipython-input-2-9e2c1545cc34> in <module>()       3 config = configparser.ConfigParser()       4 config[‘DEFAULT‘] = {‘base_dir‘:‘D:\python全站‘} ----> 5 config_path = os.path.join(base_dir, ‘common.ini‘)       6 with open(config_path, ‘w‘) as f:       7     config.write(f)  NameError: name ‘os‘ is not defined

import configparser import os config = configparser.ConfigParser() config[‘DEFAULT‘] = {‘base_dir‘:‘D:\python全站‘} config[‘DEFAULT‘][‘db_type‘] = ‘db‘ config[‘DEFAULT‘][‘db_path‘] = ‘${base_dir}/data.db‘ config[‘DEFAULT‘][‘max_items‘] = ‘1000‘ config[‘DEFAULT‘][‘auto_save‘] = ‘True‘  config[‘coop‘] = {} config[‘coop‘][‘db_type‘] = ‘db‘ config[‘coop‘][‘db_path‘] = ‘${base_dir}/data.db‘ config_path = os.path.join(base_dir, ‘common.ini‘) with open(config_path, ‘w‘) as f:     config.write(f)  # 将f写入到config中？！

config.sections()  # 只显示 coop  方法sections()  DEFAULT的特殊地方，类似于类的继承，现在coop继承了DEFAULT的属性

[‘coop‘]

  config[‘coop‘][‘db_type‘]  # 如上面所言

‘db‘

config[‘coop‘][‘auto_save‘]  # 配置文件里面都是字符串

‘True‘

bool(config[‘coop‘][‘auto_save‘])  # 转换

True

for key in config[‘coop‘]:  # 继承  printt的是字典的key，而不是里面的子集：字典     print(key)

db_type db_path base_dir max_items auto_save

coop = config[‘coop‘] # sections

coop.getboolean(‘auto_save‘)   # 获取真的bool值

True

coop.getint(‘max_items‘)  # 获取的是整数getint（）

1000

coop?

coop.get(‘db_path‘)  #字典的方法dic.get()

‘${base_dir}/data.db‘

config.read(config_path) #config的方法config.read() 读取的是文件

[‘D:\\python全站\\common.ini‘]

config.read? #Signature: config.read(filenames, encoding=None) Docstring: Read and parse a filename or a list of filenames. Files that cannot be opened are silently ignored; this is designed so that you can specify a list of potential configuration file locations (e.g. current directory, user‘s home directory, systemwide directory), and all existing configuration files in the list will be read.  A single filename may also be given.

config.add_section(‘fang‘)  # 向config中增加section：config.add_section()

config.set(‘fang‘, ‘db_name‘, ‘ccoop.pkl‘) #设置‘fang’的子集

with open(config_path, ‘w‘) as f:     config.write(f)

config = configparser.ConfigParser(interpolation=configparser.ExtendedInterpolation()) config.read(config_path)   # 获取的是完整的路径

[‘D:\\python全站\\common.ini‘]

config[‘coop‘][‘db_path‘]  ######\全路径

‘D:\\python全站/data.db‘

# 面向对象三步走 # 1 规划函数 def write_config():     pass def config_read():     pass def config_check():     pass def add_config():     pass

# 面向对象三步走 # 1 规划函数 import os import pickle import configparser base_dir = r‘D:\python全站‘ config_path = os.path.join(base_dir, ‘demo.ini‘) data = {     ‘DEFAULT‘:{         ‘base_dir‘:‘D:\python全站‘, ‘db_type‘:‘db‘, ‘db_path‘:‘${base_dir}/data.db‘, ‘max_items‘:‘1000‘, ‘auto_save‘:‘True‘     },     ‘coop‘:{         ‘db_type‘:‘db‘,‘db_path‘:‘${base_dir}/data.db‘     }  } def write_config(data:dict):    #必须是dict，四个字母     config = configparser.ConfigParser()     for k, v in data.items():         config[k] = v     config_path = os.path.join(base_dir, ‘demo.ini‘)     with open(config_path, ‘wb‘) as f:         config.write(f)  def config_read():     pass def config_check():     pass def add_config():     pass

原文：http://blog.51cto.com/13118411/2142615