topic Re: How to list which feature layers are being used by which web maps and apps? in ArcGIS API for Python Questions

How to list which feature layers are being used by which web maps and apps?

ConorMacNaughton — Fri, 30 Oct 2020 18:53:23 GMT

Anybody got any tips or hints on how this can be done?

I've been able export lists of items by user and user folder using the following:
pd.DataFrame(list_items).transpose().to_excel(str(user.username)+'.xlsx')

But it would be more useful to see which web maps and web apps throughout my organization are using which feature layers.

Re: How to list which feature layers are being used by which web maps and apps?

DavidPike — Sun, 12 Dec 2021 10:51:13 GMT

I'm still learning this one myself, quite painfully in fact...

Accessing and creating content | ArcGIS for Developers

Working with web maps and web scenes | ArcGIS for Developers

here's what I could glean from the documentation (such as it is..)

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

gis = GIS(url='https://pythonapi.playground.esri.com/portal', 
username='arcgis_python', 
password='amazing_arcgis_123')

search_my_contents = gis.content.search(query="owner:[owner name]", 
item_type="Web Map", max_items = 1000)

#create web map objects from search results and print the web map title and layer name
for webmap_item in search_my_contents:
    webmap_obj = WebMap(webmap_item)
    for layer in webmap_obj:
        print(webmap_item.title, layer.title)‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Re: How to list which feature layers are being used by which web maps and apps?

ConorMacNaughton — Mon, 02 Nov 2020 21:58:17 GMT

Thanks! This worked for me after the following change to line 14:

for layer in webmap_obj.layers:

Re: How to list which feature layers are being used by which web maps and apps?

JosephRoberts2 — Wed, 04 May 2022 19:29:16 GMT

Hi David,
Have you figured out how to access the properties of a sublayer of a service? For instance, I'm iterating through a map that has the entire service. When my script hits this layer, it does not iterate through the sublayer of the services. It simply prints the name of the main service.

Any insight would be greatly appreciated.

Re: How to list which feature layers are being used by which web maps and apps?

anonymous55 — Mon, 05 Dec 2022 16:51:35 GMT

Hello I changed line 14 but I am getting this error

Input In [1] print(webmap_item.title, layer.title)‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ ^ SyntaxError: invalid non-printable character U+200D

I am running this code in AGOL notebook.
Basically, I want my code scan web maps in my portal and list all layers and there map services url

Re: How to list which feature layers are being used by which web maps and apps?

ZakBaron — Tue, 21 Mar 2023 18:14:39 GMT

I got the same error,

SyntaxError: invalid non-printable character U+200D

and found this:

https://www.decodingweb.dev/solved-syntaxerror-invalid-non-printable-character-in-python

I removed the non-printable characters using Notepad++ with this method from StackOverflow (https://stackoverflow.com/questions/20889996/how-do-i-remove-all-non-ascii-characters-with-regex-and-notepad)

'In Notepad++, if you go to menu Search → Find characters in range → Non-ASCII Characters (128-255) you can then step through the document to each non-ASCII character.

Be sure to tick off "Wrap around" if you want to loop in the document for all non-ASCII characters.'

After that, it worked like a charm!