Python ConfigParser 注意事项

2019-11-06 06:56:28

字体：大中小

来源：转载

供稿：网友

Python ConfigParser 注意事项

以这个非常简单的典型配置文件为例:

[DEFAULT]ServerAliveInterval = 45ComPRession = yesCompressionLevel = 9ForwardX11 = yes[bitbucket.org]User = hg[topsecret.server.com]Port = 50022ForwardX11 = no

1、config parser 操作跟dict 类似，在数据存取方法基本一致

>> import configparser>>> config = configparser.ConfigParser()>>> config.sections()[]>>> config.read('example.ini')['example.ini']>>> config.sections()['bitbucket.org', 'topsecret.server.com']>>> 'bitbucket.org' in configTrue>>> 'bytebong.com' in configFalse>>> 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)...usercompressionlevelserveraliveintervalcompressionforwardx11>>> config['bitbucket.org']['ForwardX11']'yes'2、默认配置项[DEFAULT]section 的默认参数会作用于其他Sections3、数据类型 config parsers 不会猜测或自动分析识别config.ini参数的数据类型，都会按照字符串类型存储，如果需要读取为其他数据类型，需要自定义转换。 特殊bool值：对于常见的布尔值’yes’/’no’, ‘on’/’off’, ‘true’/’false’ 和 ‘1’/’0’，提供了getboolean()方法。4、获取参数值方法 get() 使用get()方法获取每一参数项的配置值。如果一般Sections 中参数在[DEFAULT]中也有设置，则get（）到位[DEFAULT]中的参数值。5、参数分隔符可以使用‘=’或‘：’（默认）6、可以使用‘#’或‘；’（默认）添加备注或说明[Simple Values]key=valuespaces in keys=allowedspaces in values=allowed as wellspaces around the delimiter = obviouslyyou can also use : to delimit keys from values[All Values Are Strings]values like this: 1000000or this: 3.14159265359are they treated as numbers? : nointegers, floats and booleans are held as: stringscan use the API to get converted values directly: true[Multiline Values]chorus: I'm a lumberjack, and I'm okay I sleep all night and I work all day[No Values]key_without_valueempty string value here =[You can use comments]# like this; or this# By default only in an empty line.# Inline comments can be harmful because they prevent users# from using the delimiting characters as parts of values.# That being said, this can be customized. [Sections Can Be Indented] can_values_be_as_well = True does_that_mean_anything_special = False purpose = formatting for readability multiline_values = are handled just fine as long as they are indented deeper than the first line of a value # Did I mention we can indent comments, too?7、写配置

常见做法：

config.write(open（'example.ini', 'w'）)

合理做法：

with open('example.ini', 'w') as configfile: config.write(configfile)

待续。。。。。。

上一篇：Python字典的常用方法总结

下一篇：剑指offer练习Python（一）