topic Re: How to check the ListLayers(Map) is Empty or not in Python Questions

How to check the ListLayers(Map) is Empty or not

BruceGreen — Mon, 07 Mar 2011 22:23:08 GMT

Hi guys
I am looking for a method to find out if the ListLayers id empty or not using arcpy.mapping

I appreciate if you ca give me an idea bout this

Thanks

Re: How to check the ListLayers(Map) is Empty or not

NiklasNorrthon — Sat, 11 Dec 2021 08:01:04 GMT

layerlist = arcpy.mapping.ListLayers(...)
if layerlist:
     do_something()
else:
     handle_empty_layer_list()

Re: How to check the ListLayers(Map) is Empty or not

BruceGreen — Tue, 08 Mar 2011 14:15:07 GMT

Thanks Niklas
I will check it and reply you the result

Re: How to check the ListLayers(Map) is Empty or not

RichardDaniels — Thu, 03 May 2018 21:40:26 GMT

I know this is an old thread, but a working snip was never posted, so here you go!

TurnOffLayer.py

_________________

import arcpy

fileName=arcpy.GetParameterAsText(0)

mxd = arcpy.mapping.MapDocument("CURRENT")
lyr=arcpy.mapping.ListLayers(mxd, fileName)

if lyr:
    if lyr[0].visible==True:
         lyr[0].visible=False
         arcpy.RefreshActiveView()

sys.argv[2]=True
arcpy.SetParameter(1,"True")