import clr

clr.AddReference("RevitAPI")
import Autodesk
from Autodesk.Revit.DB import *

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

doc = DocumentManager.Instance.CurrentDBDocument
uidoc = DocumentManager.Instance.CurrentUIApplication.ActiveUIDocument

elId=[]
for elem in IN[1]:
elId.append(UnwrapElement(elem.ID))

outtext=[]
for el in elId:
outtext.append(doc.GetElement(el).Text)

OUT = outtext