topic Re: AddField_management question in Python Questions

AddField_management question

deleted-user-rQoEFM5qzbHE — Tue, 20 Mar 2012 12:41:27 GMT

I need to add multiple fields based on a numerical value and would like to set this up in a for loop based on the numerical value. I have tried in the past to concatenate a string with a number, but have had no luck. As a work around, I had to add in multiple lines of code to add fields (enough to ensure that I add enough fields). As an example, this is what I would like to do:

max = 20

for i = 1 to max:
arcpy.AddField_management(InFC, "Field_" + str(i), ...)

Something to this effect. I have tried a couple of different ways to do this in the past, but haven't had any success. Is this possible?

Thanks,

Jeremy

Re: AddField_management question

RaphaelR — Sat, 11 Dec 2021 18:48:13 GMT

Hi Jeremy,

something like this should work:

import arcpy

max = 5
infile = r"e:\test\test.shp"

for i in range(1,max+1):  
    
    fname = "Field_"+str(i)
    arcpy.AddField_management(infile, fname, "DOUBLE") #starts with "Field_1", ends with "Field_5"

Re: AddField_management question

deleted-user-rQoEFM5qzbHE — Tue, 20 Mar 2012 15:06:07 GMT

Yeah, after talking with a co-worker this solution just popped into my head. I haven't tried it out yet, but it makes sense.

Thanks,

Jeremy