Listing layers in Web Map Error

[Kalu_Ribush]

Hi all.

I've got some code (below) to list the layers in all web mappers.

It works fine when just listing the Title of the layers, but when I had a parameter to print the layer.url as well as the layer title: 

     "print('\t',l,layer.title)

I get the following error:

This occurs when trying to get the URL for a third party, public WMTS layer, in the Web Map.

Can I modify the code to ignore this error, or list something.

from arcgis.gis import GIS
from arcgis.mapping import WebMap
import arcpy

gis = GIS("pro")

# Search for web maps based on the query. Set max_items to -1 for all maps
webmaps_contents = gis.content.search("*",item_type="Web Map", max_items=500)

print('Number of Web Maps found: ' + str((len(webmaps_contents))))

n=0

#create web map objects from search results and print the web map title and layer name

for webmap_item in webmaps_contents:

    if webmap_item.content_status != "deprecated":  # Optional to include

        n=n+1

        print(n,webmap_item.title,webmap_item.content_status)

        webmap_obj = WebMap(webmap_item)

        l=0

        for layer in webmap_obj.layers:

            l=l+1

            print('\t',l,layer.title)

print("Finished")

[Dan_Brumm]

It looks like the URL property is specific to certain kinds of items. Maybe try item.homepage

[Clubdebambos · Accepted solution]

You can use Python try/except statements to handle the error gracefully and continue with code execution.