I simply want to create a script which compares a list with the field names of a featureclass and if the fields do not exist in the featureclass add them.
My code works, but is very inefficient. How can I compare lists in a more efficient manner?
import sys,os import arcpy from arcpy import env env.overwriteOutput = True workspace = r"PATH_TO_WORKSPACE" fc = r"PATH_TO_FEATURECLASS" lst_fcfields = arcpy.ListFields(fc) lst_myfields = ["field1","field2"] for field in lst_fcfields: for myfield in lst_myfields: if field.name ==myfield: print fc +" - same as - " else: print field.name + " - not same as - " + myfield arcpy.AddField_management(fc, myfield, "TEXT", "", "", 255)
Ideally, I would like the script to work interactively and ask the user if they would like to delete the fields which vary from the list, but as far as I know there are no dialogs in arcpy.