import clr

# all references
clr.AddReference('RevitAPI')
clr.AddReference('System')
clr.AddReference('RevitServices')

# all imports
from System.Collections.Generic import List
import Autodesk.Revit.DB
from RevitServices.Transactions import TransactionManager

# inputs in python node
doc = IN[0]
activedoc = IN[1]


# gets group model from given document
collector = Autodesk.Revit.DB.FilteredElementCollector(doc)
ModelGroup = collector.OfCategory(Autodesk.Revit.DB.BuiltInCategory.OST_IOSModelGroups).WhereElementIsNotElementType()

# gets id from groups
ids = []
for element in ModelGroup:
	ids.append(element.Id)

# creates a icollection of elementid
result = List[Autodesk.Revit.DB.ElementId](ids)


# Start transaction between documents
TransactionManager.Instance.EnsureInTransaction(activedoc)

# copys the groups from one to active document
uti = Autodesk.Revit.DB.ElementTransformUtils.CopyElements(doc,result,activedoc,transform = None,options = None)

# ends transaction
TransactionManager.Instance.TransactionTaskDone()

#Assign your output to the OUT variable.
# the unique group id of the copyed group
OUT = result