Add children as sublist to parent

Lists-Logic
1

Hello all,

I currently have this list:

knipsel2
knipsel2775×494 39.4 KB

If the list item contains “AcDbPolyline” I need to add it as a sublist to the parent above it. How can this be done? Indices of the parent may vary and the amount of children can also vary.

Greetings,
Stan

2

in your graph looks everything fine… can show what you need to achieve?

3

I want to achieve the following list structure;
if item contains “AcDbPolyline” -> move item as sublist to the item above it.

So the end result should look like;
List
0 AcDbZombieEntity
1 AcDbZombieEntity
list 0
0 AcDbPolyLine
1 AcDbPolyLine
2 AcDbZombieEntity
list 0
0 AcDbPolyLine
1 AcDbPolyLine`

4

Hi @stabouw,
Try this

image
image1279×692 80.6 KB

#Code from https://stackoverflow.com/questions/1198512/split-a-list-into-parts-based-on-a-set-of-indexes-in-python

def partition(alist, indices):
    return [alist[i:j] for i, j in zip([0]+indices, indices+[None])]
    
OUT = partition(IN[0],IN[1])
3 Likes
5

Thanks! Works like a charm. I should someday further dive into the power of Python.

2 Likes
6

You could also consider exploring the power of Design Script :wink:

chopByBoolSeq_2020-11-25_09-53-19
chopByBoolSeq_2020-11-25_09-53-191370×492 49.5 KB

bln2 = List.Sublists(bln1,0..1,1);
bln3 = List.AllFalse(bln2<1>)?false:List.LastItem(bln2<1>)==true?true:List.FirstItem(bln2<1>)==true?false:true;
ind1 = List.Flatten([0,List.AllIndicesOf(bln3,false)+1,List.Count(bln1)],-1);
ind2 = List.RestOfItems(ind1)-List.DropItems(ind1,-1);
lst1 = List.Chop(lst,ind2);

chopByBoolSeq.dyn (8.0 KB)

4 Likes