tamte
I believe you can use this workflow
https://www.sidefx.com/docs/houdini/hom/locations.html#asset_modules [www.sidefx.com]
shows you how to either call specific function from python module
or also how to create module from section
both can be used to access your python module functions in OnInputChanged callback section
Thank you tamte, for me it's end up like this
kwargs["node"].hdaModule().log()