code: def ctc_args():
      bs = 2
      h = torch.randn(bs, 10, 10)
      h_lens = torch.LongTensor([10, 8])
      y = torch.randint(0, 4, [2, 5])
      y_lens = torch.LongTensor([5, 2])
      return h, h_lens, y, y_lens
  
file_path: espnet/test/espnet2/asr/test_ctc.py
imports: import pytest
  import torch
  from espnet2.asr.ctc import CTC
label_desc: Use image node_id 1 for calling a global function with example usage: ctc_args() and returns: h,  h_lens,  y,  y_lens