hi folks, I'm noticing a difference between

ConfigLoader

and

OmegaConfigLoader

. while following the standalone-datacatalog starter, I notice that

ConfigLoader("conf").get("catalog.yml")

works, but

OmegaConfigLoader("conf").get("catalog.yml")

returns

None

. on the other hand,

OmegaConfigLoader("conf").get("catalog")

seems to work (notice no

.yml

extension), and

OmegaConfigLoader("conf")["catalog"]

works consistently for both config loaders. is this intentional? compare for example https://github.com/kedro-org/kedro/blob/41f03d9/tests/config/test_config.py#L116 with https://github.com/kedro-org/kedro/blob/41f03d9/tests/config/test_omegaconf_config.py#L149

Yes this is intentional.

OmegaConfigLoader

was never meant to be a complete copy of

ConfigLoader

. The

.get("catalog.yml")

way of doing things is old and you should be using the newer way as described here: https://docs.kedro.org/en/stable/configuration/configuration_basics.html#configuration-patterns

thanks @Merel! I don't understand how using the

config_patterns

addresses this though - what would be the "new" way of retrieving the catalog config from a

*ConfigLoader

?

loader = *ConfigLoader("conf", config_patterns=...)
loader.?

Just query it like a dictionary with .get(), but instead of giving it the full file name you give it a key that exists in the config patterns dict. By default that’s:

config_patterns = {
    "catalog": ["catalog*", "catalog*/**", "**/catalog*"],
    "parameters": ["parameters*", "parameters*/**", "**/parameters*"],
    "credentials": ["credentials*", "credentials*/**", "**/credentials*"],
    "logging": ["logging*", "logging*/**", "**/logging*"],
}

oh I see - so

loader.get

or

loader[]

should receive one of the keys of

config_patterns

, right?

yes!