I have a text field called 'Description' that contains some <Null> values that I wish to update to 'Hedgerows' while keeping all other values the same.
Using Calculate Field in Pro, I tried the following:
The expression was successfully verified but I then got the following error message when running the tool:
Error 00539: Error running expression: Reclass (u"Buildings")
Traceback (most recent call last):
File "<expression>", line 1, in <module>
File "<string>, line 2, in Reclass
Name Error: name 'IsNull' is not defined
Failed to execute (CalculateField).
Any suggestions? I'm a complete novice when it comes to Python.