Best practice way to add hparams AFTER __init__ is called

[ssharpe42]

I would like to add hparams which are not args in the init method.

These values come after running .setup() function to process data (essentially to get the number of levels of each categorical )
When I load the model later on I would also like these values to populate.

Should I have these as optional parameters and update hparams after setup? Or should I be creating a DataModule and pass them in as hparams to the LightningModule?

[rohitgr7]

I think you can just manually attach it.
can you try?

def setup(...):
    self.hparams['something'] = ...

[ssharpe42]

Ah I should have added this caveat. I need this parameter before I create the model in init so I think I have to do this in the DataModule and pass it in as an argument