Question

使用@property / @ variable.setter从/在配置文件中获取/设置条目是否为pythonic？例如，文件可能是xml，yaml等，我可能要写：

config_file.port = 80

Answer 1

Python手册规定：

下一节将介绍INI文件的结构。本质上，文件由多个部分组成，每个部分都包含有值的键。 configparser类可以读取和写入此类文件。首先，以编程方式创建上述配置文件。

将值添加到configparse：

>>> import configparser
>>> config = configparser.ConfigParser()
>>> config['DEFAULT'] = {'ServerAliveInterval': '45',
...                      'Compression': 'yes',
...                      'CompressionLevel': '9'}
>>> config['bitbucket.org'] = {}
>>> config['bitbucket.org']['User'] = 'hg'
>>> config['topsecret.server.com'] = {}
>>> topsecret = config['topsecret.server.com']
>>> topsecret['Port'] = '50022'     # mutates the parser
>>> topsecret['ForwardX11'] = 'no'  # same here
>>> config['DEFAULT']['ForwardX11'] = 'yes'
>>> with open('example.ini', 'w') as configfile:
...   config.write(configfile)

从configparse检索值：

>>> config = configparser.ConfigParser()
>>> config.sections()
[]
>>> config.read('example.ini')
['example.ini']
>>> config.sections()
['bitbucket.org', 'topsecret.server.com']
>>> 'bitbucket.org' in config
True
>>> 'bytebong.com' in config
False
>>> config['bitbucket.org']['User']
'hg'
>>> config['DEFAULT']['Compression']
'yes'
>>> topsecret = config['topsecret.server.com']
>>> topsecret['ForwardX11']
'no'
>>> topsecret['Port']
'50022'
>>> for key in config['bitbucket.org']:  
...     print(key)
user
compressionlevel
serveraliveinterval
compression
forwardx11
>>> conf

Python @property用于编辑配置文件

1 个答案: