Tree operations python Grashopper

[Elena_Vazquez_Peña]

Hi all,
I am writing a simple script that takes a tree, and returns false if any of the items inside the list is false.
The script is working with my test list
#test = [[False, True,True], [True, True,True], [True, True,False]]
the result being: [False], [True], [False]

But its not working the same way with my data from GH.
What am I missing?
Below is the script and the two screenshots showing the results I get from my test vs. my data from GH.

author = “elva0068”

import rhinoscriptsyntax as rs

import ghpythonlib.treehelpers as th

y = th.tree_to_list(tree, lambda tree: tree)
#test = [[False, True,True], [True, True,True], [True, True,False]]

def booleanmix (biglst):
newbiglist =
for sublist in biglst:
for item in sublist:
if str(item) == ‘False’:
newsublst =
newsublst.append(‘False’)
break
else:
newsublst =
newsublst.append(‘True’)
newbiglist.append(newsublst)
return (newbiglist)

list = tree_to_list(tree,retrieve_base = lambda x: x[0])
a = th.list_to_tree(booleanmix(test))

[farouk.serragedine]

Hi @Elena_Vazquez_Peña ,

import clr
clr.AddReference("Grasshopper")

from Grasshopper import DataTree
from Grasshopper.Kernel.Data import GH_Path

def check_collection(tree):
    all_true = True
    
    for path in tree.Paths:
        branch = tree.Branch(path)
        if not all(branch):
            all_true = False
            break
    
    if all_true:
        return "Collection is true"
    else:
        return "Collection has at least one or more false"

# Test data
test_tree = DataTree[bool]()
test_tree.AddRange([True, True, True], GH_Path(0))
test_tree.AddRange([True, True, True], GH_Path(1))
test_tree.AddRange([True, True, False], GH_Path(2))

output = check_collection(test_tree)
print(output)

This should correctly identify if there’s any false element in the datatree
Hope this helps,
Farouk

[Elena_Vazquez_Peña]

Hi @farouk.serragedine !
Your script indeed identifies if there is a false in the list.
However, I wish to have as output the tree structure shown in the second image (a branch per each resulting boolean).
Do you have any suggestions?

[AndersDeleuran]

Try posting the file, that makes it tremendously easier to help. See this for reference (e.g. internalise data):

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[Elena_Vazquez_Peña]

TreehelpBoolean.gh (75.8 KB)
Updated with internalized data.

Here is the file @AndersDeleuran

[AndersDeleuran]

As suggested, you need to internalise the Brep:

Edit: Just saw the updated file. Is this what you’re looking for:

TreehelpBoolean_Anders_00.gh (77.2 KB)