code: def cast_tuple(val, length=1):
      return val if isinstance(val, tuple) else ((val,) * length)
  
imports: from functools import partial
  import torch
  from torch import nn, einsum
  from einops import rearrange, repeat
  from einops.layers.torch import Rearrange, Reduce
label_desc: Use image node_id 3 for calling a global function with example usage: cast_tuple(val, length) and returns: unknown