topic Re: Import Error When Running Toolbox in Python Questions

Import Error When Running Toolbox

SumLam — Mon, 16 Mar 2020 17:45:46 GMT

I am using the Urban Network Analysis toolbox by City Form Lab Urban Network Analysis Toolbox for ArcGIS — City Form Lab. But it doesn't seem to work for me.

When I run it with the Test Files provided, the following error shows up.

Traceback (most recent call last):
File "C:\Users\*\Urban Network Analysis Toolbox\src\Centrality_Main.py", line 7, in <module>
from Centrality.Main import main
File "C:\Users\*\Urban Network Analysis Toolbox\src\Centrality\Main.py", line 28, in <module>
from arcpy import mapping
ImportError: cannot import name 'mapping'
Failed to execute (Centrality).

It seems that mapping is now changed to mp according to this article https://pro.arcgis.com/en/pro-app/arcpy/mapping/migratingfrom10xarcpymapping.htm

But even I change mapping into mp in the code, this error repeats for 'from Adjacency_List_Computation import compute_adjacency_list', 'from Centrality_Computation import compute_centrality' and 'from Constants import xxx' from line 36 to 116 of Centrality\Main.py .

This tool was designed to use with ArcGIS 10.2, but I am using ArcGIS Pro 2.4 since it is the version of trail available, is that the reason the toolbox doesn't work? If so, is there any way to fix it?

Alvin

Re: Import Error When Running Toolbox

DanPatterson_Retired — Mon, 16 Mar 2020 18:08:36 GMT

It is designed to work with ArcMap apparently. If you are using ArcGIS Pro, it won't work without recoding. Contact the authors and see if they have a version for ArcGIS Pro.

PS ArcMap 10.2 was a long time ago and is into the "mature" phase, meaning, nothing more will be done to support it

Re: Import Error When Running Toolbox

SumLam — Mon, 16 Mar 2020 19:24:07 GMT

Thank you for the reply.

May I also know to what extend it need to be recoded? Is it possible to make it work by changing the import section only? And where could I find some tutorial?

Like mapping it should be changed to mp, does anyone have clue about 'Constants' and the remaining?

Re: Import Error When Running Toolbox

DanPatterson_Retired — Mon, 16 Mar 2020 19:28:54 GMT

on top of that, python 2 vs python 3 changes may be involved.

Urban Network Analysis Toolbox for ArcGIS — City Form Lab .... there is a forum link... try there to see if an updated version is available