code: def compare_at_fb(ptb_at, ptb_fb, atol, rtol):
      assert np.allclose(ptb_at, ptb_fb, atol=atol, rtol=rtol), np.abs(
          ptb_at - ptb_fb
      ).max()
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import os
  import warnings
  import numpy
  import torch
  from advertorch.attacks import SinglePixelAttack
  from advertorch.attacks import LocalSearchAttack
  from advertorch.utils import predict_from_logits
  from advertorch.test_utils import merge2dicts
  from advertorch.test_utils import MLP
  from advertorch_examples.utils import TRAINED_MODEL_PATH
  from advertorch_examples.utils import get_mnist_test_loader
  import foolbox
  from foolbox.attacks.localsearch import SinglePixelAttack
  from foolbox.attacks.localsearch import LocalSearchAttack
label_desc: Use image node_id 1 for calling a global function with example usage: compare_at_fb(ptb_at, ptb_fb, atol, rtol) without return types