Python Script output in a variable?

When running a python script using a package, can the output of a python script inside a variable?

let's say a simple script
It's output - This to be stored in variable to be used for other part of package

You can use etltools package

This wiki article has an example

www.etl-tools.com/wiki/knowledgebase/tips/working-with-python/

I will try to get chatgpt to adapt to this change & revert back

Question , how we pass variables when running a package script?

Assuming I have a variable <f001> with value "Hello,world" . Ofcourse I get an error saying f001 not defined. I am sure I am missing set variable somewhere

import etltools
 def main():    
etltools.SetVariable('abba.value',<f001> )
main()
Result.Value = 1

I think <f001> must be in quotes