Using a Python Script Tool in Modelbuilder

JohnBrand

I'm running ArcPro 2.2.

I wrote a small Python script and saved it as a Python Script Tool in my Toolbox.  It has no parameters.

I want to use it in in Model Builder in one of my existing models and I'm having trouble.  All I want to do is make sure that the script runs first before the rest of the model.  How do I make my script a precondition for the rest of the model?

Thanks

robertkalasek

JohnBrand

‎

similar problem here - and i didn't get the point of your last message. i have a script that chanes Null-Values in a table into zeros and i have put that script into a script-tool-node. since the script doesn't return any output i am not able to use the node as a precondition for the following "calculate field" node. adding a parameter with the default path - as you supposed - doesn't change my situation - since this input parameter can't be used as a precondition for the field calculator node as well. so i think i would need a return value within the script, use that value as an (output-)parameter, use that parameter as a variable within my model, and somehow check that variable value as a condition for going into the calculation step of my "Calculate Field"-node. but i have no idea how to implement that ... thx for help