code: def ex():
      return Experiment("ator3000")
  
imports: from sacred import Ingredient
  from mock import patch
  import pytest
  import sys
  from sacred import cli_option
  from sacred import host_info_gatherer
  from sacred.experiment import Experiment
  from sacred.utils import apply_backspaces_and_linefeeds, ConfigAddedError, SacredError
label_desc: Use image node_id 1 for calling a global function with example usage: ex() and returns: Experiment