Running arcpy script from Powershell after updating to ArcGIS Pro 3.1.0 gives error

[KevinCheriyan]

I have been running my python script that uses arcpy, from Powershell without any problems. But in the middle of a session, I thought to update ArcGIS Pro from 3.0.1 to 3.1 and my script immediately stopped working. I run my script from Powershell using propy (the propy.bat file location is added to my environmental variables). The following error is produced:

Unhandled exception. System.IO.FileNotFoundException: Could not load file or assembly 'ArcGIS.Core, Version=13.1.0.0, Culture=neutral, PublicKeyToken=8fc3cc631e44ad86'. The system cannot find the file specified.
File name: 'ArcGIS.Core, Version=13.1.0.0, Culture=neutral, PublicKeyToken=8fc3cc631e44ad86'
   at ArcGIS.Core.Internal.PluginWorkspaceFactoryShim.FinalConstruct(PluginWorkspaceFactoryShim* )
   at ATL.CComPolyObject<ArcGIS::Core::Internal::PluginWorkspaceFactoryShim>.FinalConstruct(CComPolyObject<ArcGIS::Core::Internal::PluginWorkspaceFactoryShim>* )
   at ATL.CComPolyObject<ArcGIS::Core::Internal::PluginWorkspaceFactoryShim>.CreateInstance(IUnknown* pUnkOuter, CComPolyObject<ArcGIS::Core::Internal::PluginWorkspaceFactoryShim>** pp)
   at ArcGIS.Core.Internal.PluginWorkspaceFactoryShim.CreateInstance(IAddInRecord* pAddinRecord, IUnknown* controllingUnknown, IUnknown** ppPluginWorkspaceFactory)
   at PluginFactory.CreateObject(PluginFactory* , IAddInRecord* pAddinRecord, IUnknown* pUnkOuter, IUnknown** ppPluginWorkspaceFactory)

This only happens when a method that takes a file name or location as a parameter is run. For instance, the following doesn't produce an error:

arcpy.env.overwriteOutput = True // no error

But this does:

arcpy.env.workspace = "location of gdb" //error

and so does this:

arcpy.Exists("location of gdb that exists") //error

but the following doesn't produce an error; just prints False.

arcpy.Exists("") //no error

I've tried restarting my Windows and rechecking environmental variables in Systems Settings. The same commands run fine from within ArcGIS Pro's python window. As far as I could tell, this started happening after I upgraded to Pro 3.1

Anyone have any idea what could be wrong here? I need to use propy or python to run my script from the shell.

Both python or propy commands from shell give same error

[ShaunWalbridge]

Hello Kevin,

Could you provide some information on how you start PowerShell and whether you have any integration with e.g. Python.NET being used? When I start a new Windows Terminal session with Powershell, I can use the scripts and it seems to work without issue. I wouldn't expect to see .NET exceptions being raised from a Python perspective, so am not sure where these are entering into the picture.

Cheers,
Shaun

[KevinCheriyan]

Hi @ShaunWalbridge ,

Thank you for your reply. Testing further, this issue can be replicated for me in Powershell, Command Prompt or any other shell. If I can start python in the shell, then import arcpy and run any command that requires a filepath, the above error is produced. 

I do separate work with the Pro SDK for .NET and some other Maps SDK for .NET projects, but I don't use console or shell for them, if that answers your question.

Thanks!

[ShaunWalbridge]

Got it. It sounds like there may be some cross-talk between ArcPy and the .NET SDK that I'm not aware of. Do you have the Pro 3.1 version of the Pro SDK installed? I might check that is installed, and see if it has an effect. Also, see if (temporarily) uninstalling the Maps SDK changes things.

[JuliusDobravolskas]

Hi,
I can add up to this issues. Simple example of listing domains from here: https://pro.arcgis.com/en/pro-app/latest/arcpy/data-access/listdomains.htm gives same error. 

I have only ArcGIS PRO 3.1 installed. 

[ShaunWalbridge]

Can you log a request through support? I'm not aware of what would cause this issue and don't know of any existing reports of it. Thanks!

[Wolf]

I am experiencing the same problem .... in 3.0 i was able to run my python scripts without any errors, but after i upgraded to 3.1 and later I am getting only errors.  I run my scripts from within a .NET Module add-in (by calling a process to invoke propy.bat) or simply from a command line.  Neither works anymore.

I attached my Python script (change the extension back to .py).  It needs an input FileGeodatabase with a polygon feature class and a non-existing feature class for the output.  The script is doing buffer operation.  

So this what i get when i run the script using 3.0 (I only show the command line here):

"C:\Program Files\ArcGIS\Pro\bin\Python\Scripts\propy.bat" "C:\Users\wolf2125\AppData\Local\ESRI\ArcGISPro\AssemblyCache\{31d7f807-1dfe-44c3-9c8b-6ffc8263159e}\test1.py" "C:\Data\FeatureTest\FeatureTest.gdb\TestPolygons" "C:\Data\FeatureTest\FeatureTest.gdb\TestPolygons_Buffer"

>> Output from Python (the output buffer polygon was created):
Input: C:\Data\FeatureTest\FeatureTest.gdb\TestPolygons
Output: C:\Data\FeatureTest\FeatureTest.gdb\TestPolygons_Buffer
Hello - this message is from a TEST Python script
Done

Next i uninstalled 3.0 and installed 3.1 and the same script can't be run.   I get this error from the command line:

"C:\Program Files\ArcGIS\Pro\bin\Python\Scripts\propy.bat" "C:\Users\wolf2125\AppData\Local\ESRI\ArcGISPro\AssemblyCache\{31d7f807-1dfe-44c3-9c8b-6ffc8263159e}\test1.py" "C:\Data\FeatureTest\FeatureTest.gdb\TestPolygons" "C:\Data\FeatureTest\FeatureTest.gdb\TestPolygons_Buffer"
Input: C:\Data\FeatureTest\FeatureTest.gdb\TestPolygons
Output: C:\Data\FeatureTest\FeatureTest.gdb\TestPolygons_Buffer
Unhandled exception. System.IO.FileNotFoundException: Could not load file or assembly 'ArcGIS.Core, Version=13.1.0.0, Culture=neutral, PublicKeyToken=8fc3cc631e44ad86'. The system cannot find the file specified.
File name: 'ArcGIS.Core, Version=13.1.0.0, Culture=neutral, PublicKeyToken=8fc3cc631e44ad86'
   at ArcGIS.Core.Internal.PluginWorkspaceFactoryShim.FinalConstruct(PluginWorkspaceFactoryShim* )
   at ATL.CComPolyObject<ArcGIS::Core::Internal::PluginWorkspaceFactoryShim>.FinalConstruct(CComPolyObject<ArcGIS::Core::Internal::PluginWorkspaceFactoryShim>* )
   at ATL.CComPolyObject<ArcGIS::Core::Internal::PluginWorkspaceFactoryShim>.CreateInstance(IUnknown* pUnkOuter, CComPolyObject<ArcGIS::Core::Internal::PluginWorkspaceFactoryShim>** pp)
   at ArcGIS.Core.Internal.PluginWorkspaceFactoryShim.CreateInstance(IAddInRecord* pAddinRecord, IUnknown* controllingUnknown, IUnknown** ppPluginWorkspaceFactory)
   at PluginFactory.CreateObject(PluginFactory* , IAddInRecord* pAddinRecord, IUnknown* pUnkOuter, IUnknown** ppPluginWorkspaceFactory)

I can't run test1.py from my add-in either - since it's executing the exact same script.

It looks to me like arcpy is unable to find / load its underlying assemblies (ArcGIS.Core, Version=13.1.0.0).  I added the ArcGIS Pro bin to the Path environment, but that didn't help.

[Anonymous User]

This is a mess... I started to notice that Pro 3.0 will sometimes load the Add-ins I created to execute python scripts.  I had to update to 3.1 as the 'solution' to test three other bugs I found and reported to esri... 3.1 just doesn't load a dockpane Addin I created at all, and I still have the 3 bugs.

[Wolf]

@Anonymous User  i can probably help you with your add-in / dockpane issues.   I am working with the ArcGIS Pro SDK team.  I will probably need to see your code though ... you can send me a private message, or report your issues under 'ArcGIS Pro SDK Questions' ArcGIS Pro SDK Questions - Esri Community

[Gerry_S]

This is something I have experienced too after upgrading to Pro 3.1. However, and curiously, a small script I made that would fail elsewhere with this error did run inside the ArcGIS Pro python window. 

It does look like ArcGIS.Core is part of the ArcGIS Pro SDK (see Home · Esri/arcgis-pro-sdk Wiki (github.com)) so I tried uninstalling and reinstalling the ArcGIS Pro SDK in Visual Studio to see if it needed to be re-installed after a Pro update. No joy, still the same error.

Looking like I'll need to downgrade to Pro 3.0.x for now until there's a fix.