Python3 configparser (配置解析)

时间：2019-05-18
环境：python3.7.3
官方文档：https://docs.python.org/3/library/configparser.html?highlight=configparser#configparser.ConfigParser

1. 相关模块引入

import configparser

2. 基础使用

conf.ini 配置文件：

import configparser

configPath = './conf.ini'
conf = configparser.ConfigParser()

## 写入
# conf['DEFAULT'] = {
#     'ServerAliveInterval': '45',
#     'Compression': 'yes',
#     'CompressionLevel': '9',
#     'ForwardX11': 'yes'
# }
# conf['MySQL'] = {
#     'host': 'localhost'
#     'port': '3306'
#     'username': 'root'
# }
# conf['domain.com'] = {
#     'Port': '50022',
#     'ForwardX11': 'no'
# }
# conf['DEFAULT']['ForwardX11'] = 'no'
# with open(configPath, 'w') as configfile:
#     conf.write(configfile)

## 读取
conf.read(configPath)
print(conf.sections())        # ['MySQL', 'domain.com']
print('confItem' in conf)     # False
print('DEFAULT' in conf)      # True
print('MySQL' in conf)      # True
print(conf.get('MySQL', 'host'))  # localhost
print(int(conf['MySQL']['port']))

print('\n遍历 MySQL 节点 (同时遍历了 DEFAULT 的配置)')
for key in conf['MySQL']:
    print(key + ' = ' + conf['MySQL'][key])

最终 conf.ini 配置文件内容：

[DEFAULT]
serveraliveinterval = 45
compression = yes
compressionlevel = 9
forwardx11 = no

[MySQL]
host = localhost
port = 3306
username = root

[domain.com]
port = 50022
forwardx11 = no

结论：

• 所有节点 包含 DEFAULT 节点内容