old_contents: import unittest
  
  
  class TestCase(unittest.TestCase):
      pass
  
new_contents: import random
  import unittest
  
  import autograd.numpy as anp
  import numpy as np
  import tensorflow as tf
  import torch
  
  
  class TestCase(unittest.TestCase):
      @classmethod
      def testSetUp(cls):
          seed = 42
          random.seed(seed)
          anp.random.seed(seed)
          np.random.seed(seed)
          torch.manual_seed(seed)
          tf.random.set_seed(seed)
  
subject: Fix random seed in unit tests