Variables in Python script: ArcCatalog vs. GPK

[BKuiper]

Hi,

is there some way to make sure python scripts run in a 'strict' mode in regards to variables?
It seems that ArcCatalog/ArcMap is much more lenient with global variables, but when running the generated GPK inside my application all these errors popup because some variables are not defined correctly and thus the script fail.

Can i somehow trigger ArcCatalog/ArcMap to already show these problems?

example

test = "example"

def function():
  arcpy.AddMessage("test: " + test)

works in ArcCatalog but will fail in the GPK because you have to add

global test

within the function