Hello everyone, Is there a way to use parameters that are passed to

kedro run

as an input to a node ? Here is a quick example: • Kedro run command:

kedro run --pipeline my_pipeline --params first_param:first_value

• I’d like to use first_param as an input to a node without having to put it in parameters.yml just to use it as an input to my node. If not, is there a way to use it directly into code ?

Pipeline([
            node(
                do_something,
                 inputs="first_param",
                 outputs="some_output"
            )
       ])

Thanks 👍

You can use

params:first_param

as an input and it should work without having to declare it in

parameters.yml

Actually, that was the first thing that I tried and I got this error: ValueError: Pipeline input(s) {‘params:first_param’} not found in the DataCatalog

Which Kedro version are you using?

I’m using 0.17.6

I'd recommend switching to Kedro 0.18.3 and trying again

and just to clarify something, the param first_param is added dynamically to

extra_params

in

register_config_loader

So,

kedro run --pipeline my_pipeline --params first_param:first_value

is not what you actually run?

Well, adding it to extra_params in register_config_loader is equivalent to passing to in kedro run as a parameter

Could you try and see if it changes something?

It works that way... So, they are different after all 😅

We are more and more trying to have static pipelines, rather than adding too much dynamically, except for parameters, and we do not have this problem. We do use a custom ConfigLoader, but this is to use the parameters in the catalog, it should not change the way parameters are passed to nodes

Well, I’ve just tested both options and

extra_params

in

register_config_loader

has the same content whether it’s added dynamically or through kedro run. But as the error says that it didn’t find the parameter in the data catalog, I think it should be injected in it as well So, it becomes a big hurdle just to avoid passing to kedro run directly 😅

Frankly, as

register_config_loader

is removed in Kedro

0.18+

, I would not go down this road

You’re right 👍 Thanks for your help 👍