Test this out on a dummy feature class and see if it behaves as expected. The expected behavior is that you'll end up with incremented Numeric ID's in a string field, even if some of the records already have ID's. This script should find the last used ID, and then start adding new ones. As with all of my code, look before you leap. I wrote this awhile ago for a specific task and haven't really revisited it.
#PKgenerator.py #Purpose: find the last used numeric ID, and add ID's that are # incremented till all features have ID's. # BEWARE: this is built to run numeric ID's into a string field... trust me, i had a good reason to write this. #Author: Kevin Bell #Date: June 5, 2007
import time print time.asctime() import arcgisscripting gp = arcgisscripting.create() gp.OverwriteOutput = 1
def getLastPK(gp, fc): '''find the last used primary key ''' searchRows = gp.SearchCursor(fc) searchRow = searchRows.Next()
pkList = [] while searchRows: if(searchRow is None): break if searchRow.myPK not in blanks: pkList.append(searchRow.myPK) searchRow = searchRows.Next() newList = [int(st) for st in pkList] newList.sort()
lastPK = newList.pop() del pkList del newList return lastPK
