I want to have a function in my model that converts an arbitrary value to a percentage within that column's range. It would need to be dynamic. Right now I have:
def prob( Failure_Score ):
my_list = arcpy.da.TableToNumPyArray ("Failure_Score")
my_max = max(my_list)
percentage = (Failure_Score / my_max)*100
but it returns nothing. Really any advice would be greatly appreciated.
Attached is a screencap with the two fields in question and the Calculate Field window.