text: from pl_bolts.utils.warnings import warn_missing_pkg
  
  try:
      from torchvision import transforms
  except ModuleNotFoundError:
      warn_missing_pkg('torchvision')  # pragma: no-cover
  
  
  def imagenet_normalization():
      normalize = transforms.Normalize(mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225])
      return normalize
  
  
  def cifar10_normalization():
      normalize = transforms.Normalize(
          mean=[x / 255.0 for x in [125.3, 123.0, 113.9]],
          std=[x / 255.0 for x in [63.0, 62.1, 66.7]],
      )
      return normalize
  
  
  def stl10_normalization():
      normalize = transforms.Normalize(mean=(0.43, 0.42, 0.39), std=(0.27, 0.26, 0.27))
      return normalize
  