yaconfigobject

Yet Anoter Configuration Object, this time using YAML.

A Python package that provides application wide configuration as an object, where all configuration items are accessible as attributes directly:

from yaconfigobject import Config

CONFIG = Config()

property = CONFIG.topic.subtopic

Configurations are stored in a YAML file inside the module/config directory of the application. A file called config.yaml existing in the applications current working directory will take precedence over the packaged file (in the config directory).

Use in a module

To make sure every piece of code has access to the same configured information, it is recommended to instantiate a Config object in the modules __init__.py file. The Config object needs to be present before any other imports take place.

An example __init__.py:

from yaconfigobject import Config

CONFIG = Config('module.yaml')

from .module_main import *

Advanced usage

Several options might help you adapting the Config class to your needs.

Defining search paths

To tell yaconfigobject.Config() where to search for config files, the paths keyword argument can be specified as a list:

CONFIG = Config(paths=['~', '~/.local/share/my_app'])

Using custom config file names

For applications where different parts use a separate configuration, it is highly recommended to use a custom file name:

CONFIG = Config(name='my_app.yaml')

Adding values in code

Of course you can also specify config values through code:

from yaconfigobject import Config

static_config = Config(database='sqlite:///:memory:')

CONFIG = Config(name='my_app.yaml')
CONFIG.update(static_config)

Loading config values from environment variables

yaconfigobject will try to load config values from environment variables prefixed with the uppercase module or application name when initialising a Config object.

CONFIG = Config(name='my_app.yaml')

All environment variables starting with MY_APP will be considered a config value. Config items from the environment will always take precedence.

NOTE: When using environment variables, config item identifiers cannot contain underscores(_)! The app / module name is the only exception.