Convert hydra/omegaconf config to python nested dict/list?

Question

I'd like to convert a OmegaConf/Hydra config to a nested dictionary/list. How can I do this?

Does this answer your question? [Converting a YAML file to Python JSON object](https://stackoverflow.com/questions/50846431/converting-a-yaml-file-to-python-json-object) — Marat, Oct 12 '21 at 20:20

Omry Yadan · Accepted Answer · 2023-04-01T05:41:04.783

20

Usage snippet:

>>> conf = OmegaConf.create({"foo": "bar", "foo2": "${foo}"})
>>> assert type(conf) == DictConfig
>>> primitive = OmegaConf.to_container(conf)
>>> show(primitive)
type: dict, value: {'foo': 'bar', 'foo2': '${foo}'}
>>> resolved = OmegaConf.to_container(conf, resolve=True)
>>> show(resolved)
type: dict, value: {'foo': 'bar', 'foo2': 'bar'}

edited Apr 01 '23 at 05:41

answered Oct 12 '21 at 21:26

Omry Yadan

31,280
18
64
87

1

Snippet: `from omegaconf import OmegaConf; OmegaConf.to_container(cfg)` – Simon Mar 31 '23 at 15:36
Added usage snippet to answer. – Omry Yadan Apr 01 '23 at 05:41
wonder why resolve=True is not the default. – A.D May 01 '23 at 21:01
resolving interpolations is a destructive operation that is changing the semantics of the config. e.g. modifying foo in the original config will change both foo and foo2 but it does not hold the same way after you resolve. – Omry Yadan May 03 '23 at 03:37

score 1 · Answer 2 · answered Jul 14 '23 at 06:42

One can simply convert from omegaconf to python dictionary by dict(). Follow the example given below:

>>> type(config)
<class 'omegaconf.dictconfig.DictConfig'>
>>> config
{'host': '0.0.0.0', 'port': 8000, 'app': 'main:app', 'reload': False, 'debug': False}
>>> dict(config)
{'host': '0.0.0.0', 'port': 8000, 'app': 'main:app', 'reload': False, 'debug': False}
>>> type(dict(config))
<class 'dict'>

Convert hydra/omegaconf config to python nested dict/list?

2 Answers2