Assigning different classes using ArcGIS Field Calculator

Question

Below is the code with what I have come up with. I have two columns, one named First_kopp that have the classes CT, WT, ST ranging from 1-9, and the second column is named First-fros. There are conditions that have to be met based on both columns as expressed in the code below, however, this code does not seem to work:

def reclass(FIRST_KOPP , FIRST_FROS):
 if 'CT' in FIRST_KOPP: 
 return "High frost risk"
 elif 'ST1' or 'ST2' or 'ST3' in FIRST_KOPP:
 return "Frost free"
 elif 'ST1' or 'ST2' or 'ST3' in FIRST_KOPP and 'Moderate frost risk' or 'High frost risk' in FIRST_FROS:
 return "Low frost risk"
 elif 'ST4' or 'ST5' or 'ST6' or 'ST7' or 'ST8' or 'ST9' in FIRST_KOPP:
 return "Frost free"
 elif 'WT' in FIRST_KOPP and 'Frost free' in FIRST_FROS:
 return "Low frost risk"
 else:
 return FIRST_FROS

• Bera: You can also use any: elif any(x in FIRST_KOPP for x in ['ST1','ST2','ST3'])

Answer 1

I have managed to get the script to work. After every or it is important to state in which column. Such as ST1 in Frost_Kopp or ST2 in Frost_kopp, etc

• J.R: your first two "elif" condition test both for "'ST1' or 'ST2' or 'ST3' in FIRST_KOPP" regardless of syntax issue if the firsts is true the second wont be evaluated....