code: def get_visible_items(d):
      return [x for x in dir(d) if not x.startswith("_")]
  
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import absolute_import
  import unittest
  import turicreate
label_desc: Use image node_id 1 for calling a global function with example usage: get_visible_items(d) and returns: unknown