code: def _mkdir_p(dirname):
      if not os.path.exists(dirname):
          try:
              os.makedirs(dirname)
          except FileExistsError:
              pass
  
file_path: pyro/pyro/contrib/examples/util.py
imports: import os
  import sys
  import torchvision.datasets
  from torch.utils.data import DataLoader
  from torchvision import transforms
label_desc: Use image node_id 4 for calling a global function with example usage: _mkdir_p(dirname) without return types