code: def assertSimilar(self, a, b, msg=None, tol=TOLERANCE):
      delta = 100 * th.norm(a - b) / th.norm(b)
      self.assertLessEqual(delta, tol, msg)
  
file_path: julius/tests/test_fftconv.py
imports: import random
  import unittest
  import torch
  from torch.nn import functional
  import julius
label_desc: Use image node_id 2 for calling the _BaseTest obj's underlying member method code with example usage: obj.assertSimilar(a, b, msg, tol) without return types