FlippedDoor

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

mirroredDoors = list()
normalDoors = list()
outlist = list()


# получение всех элементов категории OST_Doors кроме их типов
doors = FilteredElementCollector(doc).\
        OfCategory(BuiltInCategory.OST_Doors).\
        WhereElementIsNotElementType().\
        ToElements()

for door in doors:
    doorHand = door.HandFlipped
    if not(doorHand):
        normalDoors.append(door)
    else:
        mirroredDoors.append(door)

outlist.append(normalDoors)
outlist.append(mirroredDoors)

OUT = outlist