code: def __init__(self, mode="kl"):
      assert mode in [
          "kl",
          "js",
          "KL",
          "JS",
      ], "mode can only be one of ['kl', 'KL', 'js', 'JS']"
      self.mode = mode
  
imports: import paddle
  import paddle.nn
  import paddle.nn.functional
  from paddle.nn import L1Loss
  from paddle.nn import MSELoss
  from paddle.nn import SmoothL1Loss
label_desc: Use image node_id 1 to create a new KLJSLoss object from inherited base classes: object with example: obj = KLJSLoss(mode)