code: def set_seed(seed=None):
      import torch
      import numpy as np
      import random
  
      if seed is not None:
          torch.manual_seed(seed)
      np.random.seed(seed)
      random.seed(seed)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from __future__ import unicode_literals
  import torch
  import torch.nn
  import torch.nn.functional
label_desc: Use image node_id 30 for calling a global function with example usage: set_seed(seed) without return types