code: def default_hparams():
      return HParams(
          n_vocab=0,
          n_ctx=1024,
          n_embd=768,
          n_head=12,
          n_layer=12,
      )
  
imports: import numpy
  import tensorflow
label_desc: Use image node_id 1 for calling a global function with example usage: default_hparams() and returns: HParams