How do you insert both attributes and geometry with an InsertCursor?

DanEvans

I am trying to use an insert cursor to populate several fields with attributes and also the SHAPE field with a multi-part polyline, but I keep getting a "can only concatenate tuple (not "list") to tuple" error. I don't understand, because it works to insert just the SHAPE surrounded by square brackets, and my row from an outer SearchCursor works as a list everywhere else! (Converting to a tuple doesn't work either!).

Here is my code:

      # Insert the current superstring into the output feature class
      insertCursor2 = arcpy.da.InsertCursor('SuperStrings_temp_out', dissolveFields + ["SHAPE@"])
      multipartPolyline = arcpy.Polyline(superstringPartsArray)
      insertCursor2.insertRow(row + [[multipartPolyline]])
      del insertCursor2

'dissolveFields' is the list of fields whose attributes I want to update with 'row', which is the current row of a table of unique combinations (from the summary statistics tool), which has the same fields as in the dissolveFields list.

Please help!

DanEvans

Thanks, managed to solve it though.

Turns out converting to a tuple did work, I just had to keep the square brackets around multipartPolyline - although actually what I ended up doing was instead converting 'row' to a list as I had a few other fields to add and it made sense to only do one conversion to list rather than multiple to tuple!

Now my code looks like this:

      # Insert the current superstring into the output feature class
      insertCursor2 = arcpy.da.InsertCursor('SuperStrings_temp_out', dissolveFields + ["FREQUENCY", "SUM_SHAPE_Length", "SHAPE@"])
      multipartPolyline = arcpy.Polyline(superstringPartsArray)
      insertCursor2.insertRow(list(row) + [count] + [multipartPolyline.length] + [multipartPolyline])
      del insertCursor2

I just don't understand how 'row', which I treat like a list with no problems earlier on in the code, has suddenly become a tuple!