confidence 0.6.1

置信度.py:+1:

信心使加载一个或多个 配置值并将其公开为一个易于使用的python对象。 给定以下yaml文件：

foo:bar:42foo.baz:'21isonlyhalftheanswer'foobar:the answer is ${foo.bar}…

自信地使用它：

# load configuration from a YAML fileconfiguration=confidence.loadf('path/to/configuration.yaml')# a Configuration object is like a dict, but bettervalue=configuration.get('foo.bar')value=configuration.get('foo.bar',default=42)# or even kwargs, should you want to# (passing bar=42 and foo='21 is only half the answer')function(**configuration.foo)# namespaces are one honking great idea -- let's do more of those!value=configuration.foo.bar# they're even safe when values might be missingvalue=configuration.foo.whoopsieifvalueisNotConfigured:value=42# or, similarvalue=configuration.foo.whoopsieor42# even references to other configured values will workvalue=configuration.foobar# 'the answer is 42…'

通常，当 定义默认值或读取多个文件：

configuration=confidence.loadf('/etc/system-wide-defaults.yaml','./local-overrides.yaml')# confidence provides a convenient way of using this kind of precedence,# letting 'more local' files take precedence over system-wide sources# load_name will attempt to load multiple files, skipping ones that# don't exist (using typical *nix paths, XDG-specified locations, some# Windows environment variables and typical OSX paths):# - /etc/xdg/app.yaml# - /etc/app.yaml# - /Library/Preferences/app.yaml# - C:/ProgramData/app.yaml# - ~/.config/app.yaml# - ~/Library/Preferences/app.yaml# - ~/AppData/Roaming/app.yaml# - ~/.app.yaml# - ./app.yamlconfiguration=confidence.load_name('app')# if set, load_name will take a look at environment variables like# APP_FOO_BAR and APP_FOO_BAZ, mixing those in as foo.bar and foo.baz# the default load order can be overridden if necessary:configuration=confidence.load_name('app',load_order=confidence.loaders(# loading system after user makes system locations take precedenceconfidence.Locality.user,confidence.Locality.system))

虽然功能强大，但任何一套便利功能都无法满足 每个人的用例。能够像 可能，信心并没有隐藏其灵活的内部API。

# let's say application defaults are available as a dict in sourceapp_defaults={'foo':{'bar':42},'foo.baz':'21 is only half the answer'}# and we've already created a way to read a dict from somewheredefread_from_source(name):...returnread_values# all of this can be combined to turn it into a single glorious Configuration instance# precedence rules apply here, values from read_from_source will overwrite both# app_defaults and values read from fileconfiguration=confidence.Configuration(app_defaults,# yeah, this would be a Configuration instance# remember it's just like a dict?confidence.loadf('path/to/app.yaml'),read_from_source('app'))# make it so, no. 1run_app(configuration)

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