configprase模块，配置文件模块

import configparser

# config = configparser.ConfigParser()
# config["DEFAULT"] = {'Port':3306,
#                      'Server_name':'localhost',
#                      'Server_ip':'127.0.0.1'}
# config["USER"] = {'user':'root',
#                   'password':123456,
#                   'name':'root'}
# with open('web_config','w') as f:
#     config.write(f)
# config2 = configparser.ConfigParser()
# config2.read('web_config')
# print(config2.sections())       # "DEFAULT默认不显示"
# # ['USER', 'LOG']
# print('PASS' in config2)       # False 判断节是否在配置文件里面
# # False
# print(config2['USER']['user']) # 打印节点下面的配置
# # root
# for key in config2['USER']:     # 打印某节下下面的所有配置项，DEFAULT配置也会打印出来
#     print(key)
# user
# password
# name
# port
# server_name
# server_ip
# print(config2.items('USER'))      # 打印键值对，DEFAULE也会被打印
# [('port', '3306'), ('server_name', 'localhost'), ('server_ip', '127.0.0.1'), ('user', 'root'),
# print(config2.get('USER','user'))   # 通过get方法去取值

# 配置文件的增删改
# config3 = configparser.ConfigParser()
# config3.read('web_config')
#
# config3.add_section('MOUNT')        # 增加配置节点
# config3.remove_section('LOG')       # 删除配置节点
#
# config3.remove_option('USER','root') # 删除某个节点配置
# config3.set('USER','password','111') # 修改某个具体配置项
# config3.set('MOUNT','mount','mnt')
#
# with open('web_config','w') as f:
#     config3.write(f)