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A simple extension to configparser that allows nested fallback configurations

Project Description

By default, configparser only loads values from ‘vars’, ‘section’, and then ‘default_section’. This extension allows for nested sections by use of a section splitter (default ‘.’) and attempts to find values from ‘vars’, then ‘section’, then its logical parents, and finally ‘default_section’.

For example, given the configuration below:

[DEFAULT]
alpha=first level

[section]
beta=second level

[section.subsection]
gamma=third level

the default configparser would behave like:

>>> settings = configparser.ConfigParser()
>>> settings.read('config.ini')
['config.ini']
>>> settings.get('section.subsection', 'alpha')
first level
>>> settings.get('section.subsection', 'beta')
None
>>> settings.get('section.subsection', 'gamma')
third level

Instead, in this extension, the behaviour would be:

>>> settings = nestedconfigparser.NestedConfigParser()
>>> settings.read('config.ini')
['config.ini']
>>> settings.get('section.subsection', 'alpha')
first level
>>> settings.get('section.subsection', 'beta')
second level
>>> settings.get('section.subsection', 'gamma')
third level

This extensions supports theoretically unlimited levels of nesting. It also does not require each level of the subsection to exist for the case where a section has no additional configurations.

Note: this extension intentionally does not raise a NoSectionError if a section does not exist when using ‘nestedconfigparser.NestedConfigParser().get(section, option)’. This is because it will attempt to fallback to higher sections and avoids potentially empty sections that don’t have any added configurations at the highest subsection.

Release History

Release History

This version
History Node

0.1.0

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allya.nestedconfigparser-0.1.0-py3-none-any.whl (4.7 kB) Copy SHA256 Checksum SHA256 3.5 Wheel Aug 17, 2016

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