Hi Everyone, I have a simple issue that I simply cannot get right. I have a list of 10 sublists, each containing 2 boolean values, as you can see at the right of the screenshot. What I need to do is create one list, of 10 boolean items from that list. If there is at least one true in the first s…

Try this in a python script node: import clr clr.AddReference(‘ProtoGeometry’) from Autodesk.DesignScript.Geometry import * input = IN[0] outList = [] for list in input: ----if True in list: --------outList.Add(True) ----else: --------outList.Add(False) OUT = outList

I could not put the correct identation here so just change ---- for a “Tab” [LIST]

[image] adamgmac: If there is at least one true in the first sublist, I need it to give me a value of true in the second final list. If they are both false, I need a false. [image] Boolean list based on sub sublist information Lists-Logic you can use List.AnyTrue (…

ricardoperucci, thank you for your response. I tried the Python code you show, and, when written letter for letter, the python node gives me an error. I did, however, just a couple minutes ago, get the correct result just by the “list.ContainsItem” node. Is there an advantage using the Python sc…

[image] adamgmac: are there downsides to achieving this with that simple node? None :slight_smile: However, you can avoid using List.Map by changing lacing to Longest [20171130-2]

You need to link your “true/false” list of lists on the python node… You could just do it as Vikram_Subbaiah said, nothing different!

Creating one list from sub-lists based on whether it contains at least one "true"

Lists-Logic

Yna_Db November 30, 2017, 5:17pm 4

Topic		Replies	Views
Combine Sublists of Boolean Values Revit	4	2610	June 30, 2017
Finding if the sublists contain a list item in any of the items of the sublists Revit python , dynamo	11	589	May 31, 2022
Filter Multiple Elements from a List Revit	5	2179	August 8, 2018
Boolean list based on sub sublist information Lists-Logic	8	1493	February 9, 2017
Sublist filtering	4	222	November 13, 2023

Creating one list from sub-lists based on whether it contains at least one "true"

Related topics