code: def import_numpy():
      """Import numpy lazily, need to define global `np = None` variable"""
      global np
      if np is None:
          try:
              import numpy as np
          except ImportError:
              raise RuntimeError(
                  "Could not import numpy. Please make sure you have numpy "
                  "installed before you use parallel mode."
              )
  
imports: from enum import Enum
  from nvidia.dali import types
  from nvidia.dali import tensors
  import inspect
  import functools
label_desc: Use image node_id 1 for calling a global function with example usage: import_numpy() without return types