code: def init_method_normal(sigma):
      """Init method based on N(0, sigma)."""
  
      def init_(tensor):
          return torch.nn.init.normal_(tensor, mean=0.0, std=sigma)
  
      return init_
  
imports: import itertools
  import math
  from typing import Dict, Iterator, List, Tuple, Union
  import torch
  import torch.nn
  from torch import Tensor
label_desc: Use image node_id 3 for calling a global function with example usage: init_method_normal(sigma) and returns: init_, torch