Python3中configparser模块读写ini文件并解析配置的用法详解

[DEFAULT]
ServerAliveInterval = 45
Compression = yes
CompressionLevel = 9
ForwardX11 = yes

[bitbucket.org]
User = Tom

[topsecret.com]
Port: 50022
ForwardX11: no

> import configparser
> config = configparser.ConfigParser()  # 注意大小写
> config.read("config.ini")  # 配置文件的路径
["config.ini"]

> parser = configparser.ConfigParser()
> parser.read_dict({'section1': {'key1': 'value1',
...                'key2': 'value2',
...                'key3': 'value3'},
...          'section2': {'keyA': 'valueA',
...                'keyB': 'valueB',
...                'keyC': 'valueC'},
...          'section3': {'foo': 'x',
...                'bar': 'y',
...                'baz': 'z'}
... })

> config.sections()
['bitbucket.org', 'topsecret.com']  # 注意会过滤掉[DEFAULT]

> config.items('topsecret.com')
 [('port', '50022'), ('forwardx11', 'no')]  # 注意items()返回的字符串会全变成小写

> config.options('topsecret.com')
['Port', 'ForwardX11']

> for option in config['topsecret.com']:
...   print(option)
Port
ForwardX11

> config['bitbucket.org']['User']
'Tom'

> config.get('bitbucket.org', 'User')
'Tom'
> config.getint('topsecret.com', 'Port')
50022

> 'DEFAULT' in config
True
> 'test' in config['section_test']
False
> 'Tom' in config['bitbucket.org']['User']
True

> config.has_section('bitbucket.org')
True
> config.has_option('section_test', 'test')
False

> config.add_section('Section_1')
> config.set('Section_1', 'key_1', 'value_1')  # 注意键值是用set()方法
> config.write(open('config.ini', 'w'))  # 一定要写入才生效

> config.remove_option('Section_1', 'key_1')
True
> config.remove_section('Section_1')
True
> config.clear() # 清空除[DEFAULT]之外所有内容
> config.write(open('config.ini', 'w'))

> config.remove_section('DEFAULT')
False
> config.clear()
> 'DEFAULT' in config
True
> 'ForwardX11' in config['DEFAULT']
True
> config.sections()
[]

> config.remove_option('DEFAULT', 'ForwardX11')
True
> config.set('DEFAULT', 'ForwardX11','no')
> config['DEFAULT']['ForwardX11']
'no'

> config.has_section('DEFAULT')
False
> 'DEFAULT' in config
True