def copy_model_instance(obj):
	initial = dict([(f.name, getattr(obj, f.name))
	for f in obj._meta.fields
		if not isinstance(f, AutoField) and\
			not f in obj._meta.parents.values()])
	return obj.__class__(**initial)


def make_tree_copy(question, parent=None):

	if parent:
		parent = Question.objects.get(id=parent.id)

	new_question = copy_model_instance(question)
	new_question.save()
	new_question.move_to(parent)

	for child in question.get_children():
		make_tree_copy(child, new_question)