import clr
clr.AddReference('RevitAPI')
from Autodesk.Revit.DB.Structure import *
clr.AddReference('RevitServices')
import RevitServices
from RevitServices.Persistence import DocumentManager
doc = DocumentManager.Instance.CurrentDBDocument
if isinstance(IN[0], list):
OUT=[]
elements = UnwrapElement(IN[0])
for element in elements:
OUT.append([doc.GetElement(id) for id in element.GetRebarInSystemIds()])
else:
element = UnwrapElement(IN[0])
OUT=[doc.GetElement(id) for id in element.GetRebarInSystemIds()]
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