Element is group member?

Revit
1

Hello :slight_smile:

I want to check if an element is member of a group.
I use the following python script but now i noticed, that it doesn’t work with more list levels.

So i need help to change the code to work with lists of 3 and maybe more levels.

image
image976×725 52.2 KB 

import clr
clr.AddReference('ProtoGeometry')
from Autodesk.DesignScript.Geometry import *
#Die Eingaben für diesen Block werden in Form einer Liste in den IN-Variablen gespeichert.

items = UnwrapElement(IN[0])

def GetGroup(item):
	if hasattr(item, "GroupId"): return item.Document.GetElement(item.GroupId)
	else: return None

if isinstance(IN[0], list): OUT = [GetGroup(x) for x in items]
else: OUT = GetGroup(items)
2

Try making a nested loop, changing this:
OUT = [GetGroup(x) for x in items]

for this:
OUT = [[GetGroup(y) for y in x] for x in items]

1 Like
3

Hello @EdsonMatt , thanks for your help :slight_smile:
So you think only the output is the problem?
Had no luck with your suggestion:

image
image1214×762 42 KB 

import clr
clr.AddReference('ProtoGeometry')
from Autodesk.DesignScript.Geometry import *
#Die Eingaben für diesen Block werden in Form einer Liste in den IN-Variablen gespeichert.

items = UnwrapElement(IN[0])

def GetGroup(item):
	if hasattr(item, "GroupId"): return item.Document.GetElement(item.GroupId)
	else: return None

if isinstance(IN[0], list): OUT = [GetGroup(x) for x in items]
else: OUT = [[GetGroup(y) for y in x] for x in items]
4

The issue is that you’re passing a list of lists, but your code is only built to use a List or an Object.

The easiest fix will be to wrap the Python as it is inside a custom node so that Dynamo’s built it lacing will resolve the issue.

1 Like
5

I forgot to tell. Put the nested loop after the if statement and not after the else one. Like this:

if isinstance(IN[0], list): OUT = [[GetGroup(y) for y in x] for x in items]
else: OUT = GetGroup(items)
1 Like
6

Now it works, thanks again Edson :smiley:

image
image1020×665 45.5 KB 

import clr
clr.AddReference('ProtoGeometry')
from Autodesk.DesignScript.Geometry import *

items = UnwrapElement(IN[0])

def GetGroup(item):
	if hasattr(item, "GroupId"): return item.Document.GetElement(item.GroupId)
	else: return None

if isinstance(IN[0], list): OUT = [[GetGroup(y) for y in x] for x in items]
else: OUT = GetGroup(items)
1 Like