I have a python script that checks file path names for corresponding files in a drive location. All of the inputs were originally hard coded, and it works well enough:
import arcpy import os shp = r"C:\Users\dotwell\Desktop\Locations.shp" fields = ["ZdriveLoc"] f = open (r"C:\Users\dotwell\Desktop\ValMapsTest.txt", "w") cursor = arcpy.da.SearchCursor (shp, fields) for row in cursor: Roll=str(row) if not os.path.exists(Roll): f.write(Roll + os.linesep) f.close()
I'm trying to create an ArcGIS script tool from this, and I've only had partial success. I can use
shp = arcpy.GetParameterAsText(0)
to allow the user to select the shapefile. I'd like to then have a drop down list of the fields in that shapefile for the user to select the field that contains the path names, but I can't get it to work. Can someone show me how to generate the drop down? Here's my latest try. It works, but requires the user to type in the field name. It would also be nice for the user to designate the output text file name and location.
import arcpy import os shapefile = arcpy.GetParameterAsText(0) field = arcpy.GetParameterAsText(1) f = open (r"C:\Users\dotwell\Desktop\ValMapsTemp.txt", "w") cursor = arcpy.da.SearchCursor (shapefile, field) for row in cursor: Roll=str(row) if not os.path.exists(Roll): f.write(Roll + os.linesep) f.close()