I'm trying to insert geometries from one feature class into another and then update an attribute associated with the geometry. Only inserting the geometry works fine, but I can't work out how to insert the new value associated with the geometry. Below insertRow() gives 'TypeError: cannot read geometry sequence'.

import arcpy

aLayer = arcpy.GetParameterAsText(0)
aValue = arcpy.GetParameterAsText(1)
target = "C:\\local.gdb\\target"
desc = arcpy.Describe(aLayer)
type = desc.shapeType

if type == "Polygon":   
    with arcpy.da.InsertCursor(target, ["SHAPE@","aField"]) as iCursor:
        with arcpy.da.SearchCursor(aLayer, ["SHAPE@"]) as sCursor:
            for row in sCursor:             
  • 4
    Change iCursor.insertRow([row,aValue]) to iCursor.insertRow([row[0],aValue]).
    – fatih_dur
    Dec 7, 2016 at 7:16

1 Answer 1


You are trying to insert a row object within a row object in place of the SHAPE@ field/attribute. From your search cursor, you need to specify the index of your to-be-copied attribute value, which takes place at row[0].

Therefore, changing iCursor.insertRow([row,aValue]) to iCursor.insertRow([row[0],aValue]) will resolve your problem.

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