code: def _parse_args():
      parser = argparse.ArgumentParser(
          description="Generate opus files for test"
      )
      parser.add_argument("--num-channels", required=True, type=int)
      parser.add_argument(
          "--compression-level",
          required=True,
          type=int,
          choices=list(range(11)),
      )
      parser.add_argument("--bitrate", default="96k")
      return parser.parse_args()
  
file_path: audio/test/torchaudio_unittest/assets/io/generate_opus.py
imports: import argparse
  import subprocess
  import scipy.io.wavfile
  import torch
label_desc: Use image node_id 1 for calling a global function with example usage: _parse_args() and returns: parser