topic arcpy.da.Describe on Group Layer causes hard crash on ArcGIS Pro 3 in Python Questions

arcpy.da.Describe on Group Layer causes hard crash on ArcGIS Pro 3

AndyEgleton — Tue, 14 Mar 2023 11:50:01 GMT

Hi,

I've encountered an issue in ArcGIS Pro 3, when using arcpy.da.Describe on layers (.lyr/.lyrx) that contain a group layers, it causes a hard crash in ArcGIS Pro 3.

If running the same script outside of Pro the script will just terminate. I can't catch the error with try/except either.

No issues with layer files containing a single layer.

The issue doesn't occur using arcpy.Describe, but that's not as useful as a dictionary. I've modified my code to handle things differently for layers and maps, but thought it worth reporting this error.

import arcpy lyr = r"c:\temp\group_layer.lyrx" desc = arcpy.Describe( lyr ) desc.dataElement.name >>> group_layer.lyrx # Hard crash here... desc = arcpy.da.Describe( lyr )

Re: arcpy.da.Describe on Group Layer causes hard crash on ArcGIS Pro 3

DanPatterson — Tue, 14 Mar 2023 11:47:59 GMT

Does this crash too?

from arcpy.da import Describe dir(Describe) ['__call__', '__class__', '__delattr__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__gt__', '__hash__', '__init__', '__init_subclass__', '__le__', '__lt__', '__module__', '__name__', '__ne__', '__new__', '__qualname__', '__reduce__', '__reduce_ex__', '__repr__', '__self__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', '__text_signature__']

Re: arcpy.da.Describe on Group Layer causes hard crash on ArcGIS Pro 3

AndyEgleton — Tue, 14 Mar 2023 11:52:08 GMT

Hi Dan,

That works as expected, sorry forgot to type the last bit of code in my example, its when trying to describe a group layer I get a hard crash:

arcpy.da.Describe( group_lyr )

Re: arcpy.da.Describe on Group Layer causes hard crash on ArcGIS Pro 3

DanPatterson — Tue, 14 Mar 2023 11:58:26 GMT

I don't have any lyrx files to test, but if it does the same thing on another one, (or no one else weights in), you should forward this as a bug

Re: arcpy.da.Describe on Group Layer causes hard crash on ArcGIS Pro 3

Anonymous User — Tue, 14 Mar 2023 14:01:53 GMT

I gave it a try on a layer group and it stalled at the da.Describe() and failed silently as well. I'd report it as a bug.

import arcpy try: lyr = r"C:\Users\klingj\Documents\ArcGIS\Projects\Testing\Group Schools.lyrx" desc = arcpy.da.Describe(lyr, 'layer') for k, v in desc.items(): print(f"{k}: {v}") except Exception as ex: print(ex)

The lyrx file is just a file with a dictionary in it though. Open it up in notepad or vs code. You could load it in using json and parse out the information:

import json import arcpy try: glyr = r"C:\Users\u\Documents\ArcGIS\Projects\Testing\Group Schools.lyrx" with open(glyr) as jFile: lyrD = [l.replace('\n', '').strip() for l in jFile.readlines()] # <- strip the \n to format as valid json strlyr = ''.join(lyrD) # <- form a single string gLyrJson = json.loads(strlyr) # <- load as json for lyr in gLyrJson['layerDefinitions']: print(lyr['name']) print(lyr['featureTable']['dataConnection']) # Try describe here! # you'll have to create the path so this might be in the dictionary, I had to parse out the DATABASE=. for this example path = fr"C:\Users\u\Documents\ArcGIS\Projects\Testing{lyr['featureTable']['dataConnection']['workspaceConnectionString'].replace(r'DATABASE=.', '')}\{lyr['featureTable']['dataConnection']['dataset']}" desc = arcpy.da.Describe(path) for k, v in desc.items(): print(f"{k}: {v}") except Exception as ex: print(ex)

Re: arcpy.da.Describe on Group Layer causes hard crash on ArcGIS Pro 3

DuncanHornby — Thu, 16 Mar 2023 16:55:11 GMT

I see you are using arcpy.da.Describe which having read the Help file I've discovered that you use this if you want results in a dictionary format. I've never ever used that approach and I wonder if you don't need your description as a dictionary object then maybe you can use arcpy.Describe() instead? This is the approach I use and have never had any issues with. If it is a bug as hinted by other responders, then if you need to resolve this quickly, I would suggest you explore the use of arcpy.Describe().

Re: arcpy.da.Describe on Group Layer causes hard crash on ArcGIS Pro 3

AndyEgleton — Thu, 16 Mar 2023 17:45:50 GMT

I've used arcpy.Describe for LayerFiles now, its just extra lines of code:

desc = arcpy.da.Describe( item ) some_detail = desc.get( "shapeType", None )

desc = arcpy.Describe( item ) some_detail = None with contextlib.suppress( AttributeError ) some_detail = desc.shapeType

I'll raise a bug.

Re: arcpy.da.Describe on Group Layer causes hard crash on ArcGIS Pro 3

ShaunWalbridge — Mon, 27 Mar 2023 15:45:11 GMT

Did you have a chance to log this? We can make sure it gets looked at once it is.

Thanks! Shaun

Re: arcpy.da.Describe on Group Layer causes hard crash on ArcGIS Pro 3

AndyEgleton — Tue, 28 Mar 2023 07:09:52 GMT

Hi Shaun,

There is an open case: 03301233.

Thanks

Re: arcpy.da.Describe on Group Layer causes hard crash on ArcGIS Pro 3

ShaunWalbridge — Tue, 04 Apr 2023 15:35:55 GMT

Thanks Andy. I can't see it till it can wend its way into a bug report, but will keep an eye for it.