Select Revit Elements by ID from Dynamo

dynamo_select-revit-elements-by-id.py

import clr
clr.AddReference("RevitAPI")
import Autodesk
from Autodesk.Revit.DB import ElementId
clr.AddReference("RevitServices")
import RevitServices
from RevitServices.Persistence import DocumentManager
clr.AddReference("System")
from System.Collections.Generic import List

uiapp = DocumentManager.Instance.CurrentUIApplication

ids = IN[0]

# if it's not a list, make it a list
if not isinstance(ids, list):
	ids = [ids]

# convert to element ids
elemIds = []
for id in ids:
    elemIds.append(ElementId(id))
    

# cast to icollection and select
uiapp.ActiveUIDocument.Selection.SetElementIds(List[ElementId](elemIds));

#Assign your output to the OUT variable.
OUT = 0

works great, thanks for sharing : )