import clr
import System
#Import dynamo geometry design script
clr.AddReference('ProtoGeometry')
from Autodesk.DesignScript.Geometry import *
#Import ILIST method
from System.Collections.Generic import *
# Import ToDSType(bool) extension method
clr.AddReference("RevitNodes")
import Revit
clr.ImportExtensions(Revit.Elements)
# Import ToProtoType, ToRevitType geometry conversion extension methods
clr.AddReference("RevitNodes")
import Revit
clr.ImportExtensions(Revit.GeometryConversion)
# Import RevitAPI
clr.AddReference("RevitAPI")

inpt = UnwrapElement(IN[0])
otpt = []
for i in inpt:
    otpt.append(i.Category.Name)
#Assign your output to the OUT variable
OUT = otpt