Confuse - Jinja Variables

Simple Ansible-style variable parsing for Confuse config files using Jinja2.

Install

pip install confuse_jinja

Usage

import confuse_jinja
confuse_jinja.enable()
# now you can use jinja2 templates inside your keys

config = confuse.Configuration('asdf', read=False)
config.set({
    'asdf': {
        'blah': 'asdf{{ C.other.thing }}'
    },
    'nested': '{{ C.asdf }}',
    'other': {'thing': 456}
})

assert config['asdf']['blah'].get() == 'asdf456'
assert config['nested'].get() == {'blah': 'asdf456'}

How it works

• for any config values that are a string, render it as a jinja2 template
• try to parse rendered string as python using ast functions graciously pulled from ansible's source code
  • if a valid python object (list, dict, etc.) can be parsed from the string the object will be returned, otherwise it will return as a string.

TODO:

• test in a yaml file (possible syntax errors)
• enable on a config-by-config object basis instead of globally.
  • would need to replace ConfigView.__getitem__ for a single Config
  • would require using self.Subview instead of global Subview