code: def skipIfNoExec(cmd):
      return _skipIf(
          shutil.which(cmd) is None,
          f"`{cmd}` is not available.",
          key=f"NO_CMD_{cmd.upper().replace('-', '_')}",
      )
  
imports: import functools
  import os.path
  import shutil
  import subprocess
  import sys
  import tempfile
  import time
  import unittest
  from itertools import zip_longest
  import torch
  import torchaudio
  import torio
  from torch.testing._internal.common_utils import TestCase
  from torchaudio._internal.module_utils import eval_env, is_module_available
  from torchaudio.utils.ffmpeg_utils import get_video_decoders, get_video_encoders
label_desc: Use image node_id 6 for calling a global function with example usage: skipIfNoExec(cmd) and returns: _skipIf