配置文件

Posted 2020-12-04

# 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

# 使用configadmin为项目51备忘录扩展共鞥
#针对上次作业的MemoAdmin类
# 1，添加注册和登陆功能，用户密码使用dict保存为：users.pkl
# 2. 添加配置文件，为备忘录数据指定路径，类型和文件名
#  比如coop，则数据文件可以为coop.pkl或者coop.db
# 3.注册时，相应数据文件根据用户名在配置文件保存为新的section，
# 如coop,则有新的section 叫做[coop]
# 4 .启动程序先提示登陆每次登陆时候，先根据配置文件读取用户信息，找不到，提示注册
class MemoAdmin:
    def __init__(self, config):
        self.config = config

    def register(self):
        pass

    def login(self):
        pass