topic Re: Python If/Then expression calculating one field based on different field in ArcMap10.2 in ArcMap Questions

Python If/Then expression calculating one field based on different field in ArcMap10.2

wesmuilenburg — Wed, 12 May 2021 16:35:16 GMT

I want to calculate Inspection Cycle Totals based on the field Inspection Cycle using python.

If Inspection Cycle in Null, then calc Inspection Cycle Totals to zero 0.

If Inspection Cycle already has a value, then calc that value into Cycle Totals.

Note: Inspection Cycle is a short integer. Inspection Cycle Total is a text field.

Thanks in advance for any assistance.

Re: Python If/Then expression calculating one field based on different field in ArcMap10.2

JayantaPoddar — Wed, 12 May 2021 17:15:06 GMT

Just keep 1 variable in the function, i.e., Inspection_Cycle.

Also in your workflow, function name is different in Code Block and in Expression.

def classify(Inspection_Cycle):

Expression:

classify(!Inspection_Cycle!)

Re: Python If/Then expression calculating one field based on different field in ArcMap10.2

wesmuilenburg — Wed, 12 May 2021 17:28:12 GMT

Jayanta, Thanks for the quick response. I have enclosed two images which further show my intention and python code. I am still having a bit of trouble.

Re: Python If/Then expression calculating one field based on different field in ArcMap10.2

wesmuilenburg — Wed, 12 May 2021 17:39:56 GMT

Jayanta, I have a solution. I added () around if statement. I have enclosed an image of the solution to assist the community of users.

Thanks again!

Re: Python If/Then expression calculating one field based on different field in ArcMap10.2

JayantaPoddar — Wed, 12 May 2021 18:51:20 GMT

The If statement line should end with colon (:)

That's why the code (Python_fieldcalc_2.jpg) didn't run.