python 配置文件_Python：体面配置文件格式

最新推荐文章于 2024-08-21 20:49:35 发布

最新推荐文章于 2024-08-21 20:49:35 发布 · 29 阅读

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#python 配置文件

作者在寻找一种简洁的键值对配置文件格式，支持嵌套和重复结构，同时尽量减少语法负担。JSON因过多的显式规则被排除，而YAML虽然良好但要求将作业定义为列表。作者提出使用Python源代码作为配置，因为Python字典和列表可以提供清晰的结构，并带来额外的好处，如Django设置文件的例子所示。

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I'd like to use a configuration file format which supports key value pairs and nestable, repeatable structures, and which is as light on syntax as possible. I'm imagining something along the lines of:

cachedir = /var/cache

mail_to = me@example.org

job {

name = my-media

frequency = 1 day

source {

from = /home/michael/Images

source { }

}

job { }

I'd be happy with something using significant-whitespace as well.

JSON requires too many explicit syntax rules (quoting, commas, etc.). YAML is actually pretty good, but would require the jobs to be defined as a YAML list, which I find slightly awkward to use.

解决方案

I think YAML is great for this purpose, actually:

jobs:

- name: my-media

...

- name: something else

...

Or, as a dict instead of list:

jobs:

my-media:

frequency: 1 day

...

something-else:

frequency: 2 day

...

Another thing to consider, which you might not have, is using Python source for the configuration. You can nest Python dicts and lists in a very readable manner and it provides multiple unexpected benefits. Django uses Python source for its settings files, for example.