topic Re: ValueError when attempting to import Urban API as a Python module to ArcGIS Online Notebook in ArcGIS Urban API Questions

ValueError when attempting to import Urban API as a Python module to ArcGIS Online Notebook

RidleySoudack — Thu, 07 Aug 2025 16:52:40 GMT

Hi there,

I have a number of ArcGIS Online Notebooks that leverage the Urban API to maintain my Urban models. Today I discovered that they are no longer functional, and error out when attempting to import the Urban API as a Python module. (Specifically they return ValueError: Schema already has Time=Time). I have not made any changes to the code, leading me to believe the issue may be being caused by a recent update to the API.

For ease of testing, I've created a public version of the first few cells of these Notebooks so you can test the issue. The third cell returns the error for me when run:

arcgis.com/home/item.html?id=33d1a0aabb6d498cb52dde98b8bb9809

Thanks in advance for the help!

Re: ValueError when attempting to import Urban API as a Python module to ArcGIS Online Notebook

ThierryWeber — Mon, 11 Aug 2025 08:24:13 GMT

Hi Ridley,

thank you for reporting this. I was able to reproduce the error and our team will have a look at this. I will get back to you as soon as we fixed the issue.

Let us know if you have any other questions.

Re: ValueError when attempting to import Urban API as a Python module to ArcGIS Online Notebook

ThierryWeber — Tue, 19 Aug 2025 05:55:22 GMT

Hi Ridley,

We found the cause of the ValueError. We added a type 'Time' to our schema which leads to this error, as by default the generated code for the schema includes some time-related utility types.

Solution:
Add the following argument to the sgql generator: '--exclude-default-types=Time'

New sgql generator code:
!sgqlc-codegen schema --exclude-default-types=Time urban_api_schema.json urban_api_schema.py

This solves the error for me. We will also adjust the documentation to include this.

Re: ValueError when attempting to import Urban API as a Python module to ArcGIS Online Notebook

RidleySoudack — Tue, 26 Aug 2025 14:23:15 GMT

Hi Thierry,

Thank you for following up and for the solution - just confirming this works on my end.

Have a great week!

Ridley