topic Re: Arcpy 3.2.2 Polygon getpart issue in Python Questions

Arcpy 3.2.2 Polygon getpart issue

MarceloCesarTorres — Fri, 23 Feb 2024 16:10:07 GMT

I'm trying to get polygon parts but I get an exception:

File "c:\Users\Mtorres\source\repos\FFP-ArcGISPro-Project\src\Public Inspection\Python Toolboxes\PublicInspectionArcGIS\Centerline.py", line 73, in _extract_parts_from_input_geometry
part = geometry.getPart(index)
File "c:\Program Files\ArcGIS\Pro\Resources\ArcPy\arcpy\arcobjects\arcobjects.py", line 1331, in getPart
return convertArcObjectToPythonObject(self._arc_object.GetPart(*gp_fixargs(args)))
RuntimeError: DescribeGeometry: Error in getting part from geometry

The script runs on ArcGIS Pro v3.2.2. Next script code fragment where I make the call:

parts = []

geometry = self.input_geometry

if geometry.isMultipart :

part_range = range(0, self.input_geometry.partCount)

else :

part_range = range(0, 1)

for index in part_range :

part = geometry.getPart(index)

parts.append(part)

return parts

I run the same code on ArcGIS Pro 3.1but the exception never happens.

Is there an error with last version of arcpy?

Marcelo

Re: Arcpy 3.2.2 Polygon getpart issue

Kepa — Wed, 28 Feb 2024 18:11:44 GMT

Hi @MarceloCesarTorres,

I'm not able to reproduce your error in 3.2.2 nor in 3.1.3, at least in my personal environment (FileGDB and PostgreSQL -ST_Geometry). Are you working in an enterprise geodatabase? Shapefiles? In memory?

I'd perform a geometry check just in case and make sure you are working with proper geometries.

Regards,

Re: Arcpy 3.2.2 Polygon getpart issue

MarceloCesarTorres — Wed, 28 Feb 2024 23:16:58 GMT

Thanks for your answer, I'm working with a FileGeodatabase. But I realize that there was a issue with geometries at the feature class: Shape Areas were negatives.

Then I used "Repair Geometries" Tool to fix geometries, and everything start to works fine.

I get this output from tool: