I don't have time to look at goal, but I do see two custom nodes that have a "Toggle" input with nothing being fed into them. Some nodes that have that to keep them running by default and have to have "true" fed to that input, which could explain the empty list.

Hello Mimi,

This is one way to do it with Out of the Box Nodes

Dear Sol Amour,

I actually want list of all available family and types, the objective is to list all family and types used and also those are available but not used. One of the reason so that we can check and set the naming convention for families and also types. I can extract these for all other categories except for categories with system family.

Thanks anyway.

Hello Mimi,

This should be something closer to what you're after:

Great amoursol.

It solved the problem, except for the Stacked Wall and and Slab Edge that need special handling.

Thanks.


Just copy back the python script for other's reference:

import clr
clr.AddReference('RevitNodes')
import Revit
clr.ImportExtensions(Revit.Elements)
clr.AddReference('RevitServices')
import RevitServices
from RevitServices.Persistence import DocumentManager
clr.AddReference('RevitAPI')
import Autodesk
from Autodesk.Revit.DB import *
import System
from System.Collections.Generic import *


doc = DocumentManager.Instance.CurrentDBDocument
colWallInstances = FilteredElementCollector(doc).OfCategory(BuiltInCa tegory.OST_Walls).WhereElementIsNotElementType().T oElements()
colWallTypes = FilteredElementCollector(doc).OfCategory(BuiltInCa tegory.OST_Walls).WhereElementIsElementType().ToEl ements()
colFloorInstances = FilteredElementCollector(doc).OfCategory(BuiltInCa tegory.OST_Floors).WhereElementIsNotElementType(). ToElements()
colFloorTypes = FilteredElementCollector(doc).OfCategory(BuiltInCa tegory.OST_Floors).WhereElementIsElementType().ToE lements()


OUT = colWallInstances,colWallTypes,colFloorInstances,co lFloorTypes

Hi Sol

This post has been great help for me to also collect all of the system element types and instances in the browser of the model - by copying your Python script. I am a novice with Python. Would you be able to help quickly to use this to collect all of the Duct, Pipes and Cable Trays types and instances? What do I need to alter in the script? Just changing walls to ducts does not work.

Many thanks
Tim

The short answer (from a non-python person) is that you need to change out the category names (i.e. BuiltInCategory.OST_Walls) for the equivalent name for what you are trying to pull information from. You should be able to pull that from APIDocs https://www.revitapidocs.com

Thank you very much for this! Worked perfectly.

Cheers
Tim