Is there a rule whereby only python native datatypes can be used as the “outer” variable?

I have a dict of numpy np.array s elsewhere in my code and that works fine with caching.

Hi @<1523701079223570432:profile|ReassuredOwl55> , how are you saving them? Are they are saved as artifacts?

I am using the PipelineDecorator form of the pipeline and I am passing arguments as function arguments to the pipeline components