Append item to a list in specific path

Lists-Logic
1

Hi all,

I am having difficulty to append item to a list with Python.

I am trying to keep at output the same data structure as the input and for that I am using two for loops.

Error is saying that (i) is out of range, but when I output (i) I have list 0, 1, 2, 3 what is matching to indexes of the branches

I am quiet inexperienced with Python and I am really grateful for all your help

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Thanks in advance

2

@Faruk_B I don’t think you need to use range and then use it to call the sublist.
Instead try this:

image
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wallsTrees = IN[0]
analyticalElements = []

for wallsTree in wallsTrees:
	temp = []
	for wall in wallsTree:
		a = 5
		temp.append(a)
	analyticalElements.append(temp)
	
OUT = analyticalElements
3

@AmolShah thanks a lot, I tried and it is working for numbers. Thing is that I am trying to get analytical elements from the walls and when I try to append temp list to analyticalElements list I get error: expected Element got List

wallsTree = IN[0]
analyticalElements = []



for wall in wallsTree:
	temp = []
	for wall in wallsTree:
		a = Element.GetAnalyticalModel(wall)
		temp.append(a)
	
	analyticalElements.append(temp)


OUT = analyticalElements
4

@Faruk_B It is not working because you are nesting another loop with the exact same variables (i & j).

What you did is

for i in j:
	temp = []
	for i in j:

Instead of doing

for i in j:
	temp = []
	for k in i:

Here you go again:

import clr
clr.AddReference('RevitAPI')
import Autodesk
from Autodesk.Revit.DB import *

wallsTrees = UnwrapElement(IN[0])
analyticalElements = []


for wallsTree in wallsTrees:
	temp = []
	for wall in wallsTree:
		temp.append(Element.GetAnalyticalModel(wall))
	analyticalElements.append(temp)


OUT = analyticalElements

I hope this time you will copy the code exactly as stated above and not get creative in renaming the variables! :sweat_smile:

5

@AmolShah, thanks, I made it to complicated. Thank you again for your help it works perfect