Kedro is an open-sourced Python framework for creating maintainable and modular data science code.

Kedro

Hi - How should i reference values from parameter_data_processing.yml in my pipeline in kedro? i have multiple parameters file in my project

the file name is not important, the key name is

also can you tell me how can i pass the entire parameters_data_processing.yml file in the pipeline inputs?

if they are top level keys you need to be explicit

but if they are nested you can pass the whole thing

```my_key: 1,2,3

my_nested_key: 
    my_sub_key: 1
    my_other_sub_key: 2```

you can explicitly provide `my_nested_key` and it will pass a dictionary of `Dict[Dict[str, int]]`

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<@U03R8FW4HUZ> - in my case in one of my node im passing parameters as input. parameters.yml contains 4 top keys. there are other parameters file also like parameters_datapreprocessing.yml. how passing only parameters is able to link with the keys inside the parameters.yml file only?

```inputs=["time_split_app_proc", "parmam:key1", "param:key2", ...]```

yes but my question is when i pass parameters why only keys from parameters.yml are passed and not from parameters_dataprocessing.yml? Is it matching with the file name?

you should get an error stating they need to be unique

the parameter naemspace doesn’t take files into account, the files are for humans to make it easier to manage

there are more complex ways of having multiple versions of the same key too but I’m not sure that’s relevant here

The keys are unique in both yml. But keys from parameters.yml is only accessed inside node wheb input = “parameters” . Can i similarly access parameters_processing.yml with input = “parameters_processing”? Is that correct way?

the filename is irrelevant, they’re all scooped up into the same list of available keys

if you send `parameters` that sends all parameters across all files

you can use dot syntax to send explicit key paths

The docs have this in detail
<https://docs.kedro.org/en/stable/configuration/parameters.html>

~hi <@U03R8FW4HUZ> - can you help me in resolving this error? ValueError: Pipeline input(s) {'parameters_data_insights'} not found in the DataCatalog
Below are screenshots of yml and input in pipeline~

~I want to pass all the parameters under the key parameters_data_insights from the parameters_data_insights.yml~