schema.py

 class Unit(graphene.ObjectType):                                                                                                           
      unit_id = graphene.Int()                                                                                                               
      class_id = graphene.Int()                                                                                                              
      subject_id = graphene.Int()                                                                                                            
                                                                                                                                             
                                                                                                                                             
  class SharedCourseOutlineEndpoint(graphene.ObjectType):                                                                                    
      units = graphene.List(Unit,                                                                                                            
                            unit_id=graphene.Int(),                                                                                          
                            class_id=graphene.Int(),                                                                                         
                            subject_id=graphene.Int())                                                                                       
                                                                                                                                             
      @staticmethod                                                                                                                          
      def resolve_units(root, args, context, info):                                                                                          
          import ipdb                                                                                                                        
          ipdb.set_trace()  # noqa                                                                                                           
>>        return Units()                                                                                                                     
                                                                                                                                             
                                                                                                                                             
  class sharedCourseOutlineQuery(graphene.AbstractType):                                                                                     
      shared_course_outline = graphene.Field(SharedCourseOutlineEndpoint)