get all view port type dynamo revit
import clr
# Import RevitAPI
clr.AddReference('RevitAPI')
import Autodesk
from Autodesk.Revit.DB import *
# Import DocumentManager and TransactionManager
clr.AddReference('RevitServices')
import RevitServices
from RevitServices.Persistence import DocumentManager
clr.AddReference('RevitNodes')
import Revit
clr.ImportExtensions(Revit.Elements)
doc = DocumentManager.Instance.CurrentDBDocument
collection = FilteredElementCollector(doc).OfCategory(BuiltInCategory.OST_Viewports).WhereElementIsNotElementType().ToElements()
vptypes = []
for e in collection:
if e.Category != None:
vptypes.append(e.ToDSType(True))
OUT = vptypes