An error with removeNodeCheckKeepShape_normalizeHandles_

Scripting
1

Hi! I have the following code that is supposed to remove the selected nodes and keep shapes:

for item in Layer.selection:
	if not item.parent:
		continue
	item.parent.removeNodeCheckKeepShape_normalizeHandles_(item, True)

If you run it with 1 circle selected, it works as expected, but select 2 circles and it raises this error:

Traceback (most recent call last):
  File "<macro panel>", line 1
  File "_convenience.py", line 152, in <lambda>
    ("__next__", lambda self: container_unwrap(self.nextObject(), StopIteration)),
                                               ^^^^^^^^^^^^^^^^^
IndexError: NSRangeException - *** -[NSArray getObjects:range:]: range {16, 8} extends beyond bounds [0 .. 6]

I get that the iteration breaks somewhere, but can’t figure out what to check to avoid it, any hints please?

2

What this error is telling you is that the array (in this case: layer.selection) has changed while iterating over it.

Do the following instead:

  • add the items you want to delete to a new Python list
  • after collecting the items, iterate over the items in the list and use that list to remove them from Layer.selection.
3

Perfect, thank you! I got confused because it works for some arrays but not for others depending on something :slight_smile:

4

It is never a good idea to iterate over a list that is in any way change in the loop. Removing the node will also remove it from the selection …