I have the following example: list = [] for i in range(0, 10): list.append(i+1) list.append(i+2) The first thing im questioning is how to put every loop into a new branch. Now it puts all values into one list, but I want to have every loop in a sepperate list. My second question is, how do I output this as a grasshopper list with branches? Thanks again! Greetings

You may want to try this import ghpythonlib.treehelpers as th outer = [] for i in range(0,10): inner = [] inner.append(i) inner.append(i+1) outer.append(inner) result = th.list_to_tree(outer)

Here’s a simple example: [image] Outputting a nested python list as tree? Grasshopper You can instantiate a DataTree and append Python lists to it like so (you can specify a datatype instead of [object]): import Grasshopper as gh def listToTree(nestedList): """ Convert a nested python iterable to a datatree """ dt = gh.DataTree[object]() for i,l in enumerate(nestedList): dt.AddRange(l,gh.Kernel.Data.GH_Path(i)) return dt Giulio wrote some handy functions for reading/writing arbitrarily nested Python lists to DataTrees. I believe the… Also refer to this article, Grasshopper data trees and Python This guide describes how to use data trees in Python.

Thanks! This really helped me out.

Branches with grasshopper python

Grasshopper Developer

AndersDeleuran April 28, 2023, 2:37pm 2

Here’s a simple example:

Also refer to this article,

Topic		Replies	Views
Outputting a nested python list as tree? Grasshopper python	3	10547	October 12, 2017
Grasshopper Python - BrachCount Grasshopper python	3	1795	September 20, 2018
Tree To List Confusion Grasshopper windows , ghpythonlib , python	1	1489	June 6, 2022
[Python] How can I transform a nested list to tree with branches? Grasshopper Developer	4	1299	February 14, 2019
ghPythonLib Branching Output Comprehension Serengeti (Rhino BETA)	1	876	September 26, 2016

Branches with grasshopper python

Related topics