The attribute 'name' is not supported on an instance of Layer

Question

I'm trying to import a batch .mxds into ArcPro projects and have run into a NameError I can't figure out.

I need the script to walk some folders, import .mxds one at a time, remove some layers, add some layers, change some layers and then save a copy of each ArcPro project. Last week the script ran just fine in ArcPro 2.7. I updated to ArcPro 2.8 and the script was broken. I had IT do a clean reinstall of ArcPro but no joy.

The script is longish but it's a just a bunch of simple code strung together. The relevant part is:

aprx = arcpy.mp.ArcGISProject(r" path to blank .aprx ")
aprx.importDocument( .mxd path grabbed from folder walk )

for m in aprx.listMaps():
                if m.name == "Layers":
                    print("Adding: {0}".format(addlyr))
                    print("Adding: {0}".format(addlyr2))
                    m.addDataFromPath(addlyr)
                    m.addDataFromPath(addlyr2)

for lyr in m.listLayers():

if lyr.name == "Graphics Layer":
                            m.removeLayer(lyr)

I have a long string of elif statements after this one. It errors on this first one, but if I remove it the error triggers on the next one and so on.

This is the error message I get:

Traceback (most recent call last):
File "C:\Program Files\ArcGIS\Pro\Resources\ArcPy\arcpy\arcobjects\_base.py", line 90, in _get
return convertArcObjectToPythonObject(getattr(self._arc_object, attr_name))
AttributeError

During handling of the above exception, another exception occurred:

File: " my script " line 52, in <module>

Traceback (most recent call last):

if lyr.name == "Graphics Layer":

File "C:\Program Files\ArcGIS\Pro\Resources\ArcPy\arcpy\arcobjects\_base.py", line 96, in _get
(attr_name, self.__class__.__name__))

NameError: The attribute 'name' is not supported on this instance of Layer.

I've tried this in a separate script running from PyCharm and in an ArcPro notebook. Same error every time.

Has anybody else seen this?

Dailey_Don_L_ · Answer

As a follow-up to this I eventually got the script to work by inserting "if  lyr.supports("NAME"):" which then allowed the script to run.

Like I mentioned above the original script failed even if I included only layers that I was certain supported the name property. I haven't had the opportunity to use the name property in a script in a different situation so I don't know if this was a one-off quirk. I do know that my original script ran exactly as I wanted before my upgrade to ArcPro 2.8.

DavidShaeffer · Answer

I had this same issue. No need to downgrade to 2.7 as I believe this is intended behavior. I added the try except block that David Pike suggested and that fixed the issue. I guess not all layers have a name property. Seems weird but my tool is working again.

Update: I ended up changing it to "if  lyr.supports("NAME"):" instead of the try/except because that seems like a better way to handle the situation.

RobertHooley · Answer

.. in fact this is happening on ALL layer properties not just name, rolling back to 2.7 😢 pro = arcpy.mp.ArcGISProject('CURRENT') map = pro.activeMap for lx in map.listLayers() : if (lx.visible): pass Traceback (most recent call last): File "C:\Program Files\ArcGIS\Pro\Resources\ArcPy\arcpy\arcobjects\_base.py", line 90, in _get return convertArcObjectToPythonObject(getattr(self._arc_object, attr_name)) AttributeError During handling of the above exception, another exception occurred: Traceback (most recent call last): File "", line 5, in File "C:\Program Files\ArcGIS\Pro\Resources\ArcPy\arcpy\arcobjects\_base.py", line 96, in _get (attr_name, self.__class__.__name__)) NameError: The attribute 'visible' is not supported on this instance of Layer.