code: def show_objects(self):
          ''' display the entire of objects with their (id, value, node) '''
          for key in self.nodes:
              node = self.nodes[key]
              value = node.obj
              print(key, '-', repr(value), '-', nodef show_objects(self):
          ''' display the entire of objects with their (id, value, node) '''
          for key in self.nodes:
              node = self.nodes[key]
              value = node.obj
              print(key, '-', repr(value), '-', node)
docs: display the entire of objects with their (id, value, node)