code: def import_cv():
      """Import cv2. Put it inside a function to avoid webcam lights blinking on ``import monai``."""
      global cv2
      global has_cv2
      cv2, has_cv2 = optional_import("cv2")
  
imports: from __future__ import annotations
  import os
  import sys
  import tempfile
  from collections.abc import Callable
  from typing import TYPE_CHECKING, Any
  import numpy
  from torch.utils.data import Dataset, IterableDataset
  from monai.utils.enums import ColorOrder
  from monai.utils.module import optional_import
label_desc: Use image node_id 1 for calling a global function with example usage: import_cv() without return types