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Stacked Walls with Dynamo

Struggling trying to list stacked walls and their members with Revit?
The answer is Dynamo and Python. Copy and paste this code into a Python node in Dynamo and you'll get as output the list of Stacked walls instances and all the related members.

####################################################################
#Copyright 2017©
#Twitter: @CesareCaoduro
#Email: cesare.caoduro@gmail.com
####################################################################
#Declaration section
import sys
pyt_path = r'C:\Program Files (x86)\IronPython 2.7\Lib'
sys.path.append(pyt_path)

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

 import os

 clr.AddReference('RevitAPIUI')
from  Autodesk.Revit.UI import *

 clr.AddReference('RevitNodes')
import Revit
clr.ImportExtensions(Revit.Elements)
clr.ImportExtensions(Revit.GeometryConversion)

 clr.AddReference('RevitServices')
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager

 #Active document
doc = DocumentManager.Instance.CurrentDBDocument
uidoc = DocumentManager.Instance.CurrentUIApplication.ActiveUIDocument

 clr.AddReference('RevitAPI')
from Autodesk.Revit.DB import *
from Autodesk.Revit.Creation import *
####################################################################
#Start a transaction on the active document
TransactionManager.Instance.EnsureInTransaction(doc)
#Insert here you code#
input = IN[0]
col = FilteredElementCollector(doc).OfCategory(BuiltInCategory.OST_StackedWalls).WhereElementIsNotElementType()

 lstStackedWallsMembers = []
lstStackedWalls = []
for c in col:
lst = []
ids = c.GetStackedWallMemberIds()
for id in ids:
lst.append(doc.GetElement(id).ToDSType(True))
lstStackedWallsMembers.append(lst)
lstStackedWalls.append(c.ToDSType(True))

 #Dispose the active transaction
TransactionManager.Instance.TransactionTaskDone()
####################################################################
OUT = lstStackedWalls, lstStackedWallsMembers

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