code: def default(val, default_val):
      default_val = (
          default_val() if isfunction(default_val) else default_val
      )
      return val if val is not None else default_val
  
imports: import torch
  from torch import nn
  import torch.nn.functional
  import math
  from inspect import isfunction
label_desc: Use image node_id 1 for calling a global function with example usage: default(val, default_val) and returns: unknown