code: 
  
  
  '''simple docstring'''
  
  from __future__ import annotations
  
  import unittest
  from collections.abc import Iterator
  
  
  
  
  
  
  
  class  UpperCAmelCase :
  
   def __init__( self :	Optional[Any],					a_ :	str,					a_ :	int					):
  
  
  
  
  
      """simple docstring"""
  
  
  
      UpperCamelCase__ 						=						label
      UpperCamelCase__ 						=						parent
      UpperCamelCase__ 						=						None
      UpperCamelCase__ 						=						None
  
  
  
  
  
  
  
  class  UpperCAmelCase :
  
   def __init__( self :	List[str]					):
  
  
  
  
  
      """simple docstring"""
  
  
  
      UpperCamelCase__ 						=						None
  
   def 		lowercase_						( self :	Any					):
  
  
  
  
  
      """simple docstring"""
  
  
  
      UpperCamelCase__ 						=						None
  
   def 		lowercase_						( self :	Dict					):
  
  
  
  
  
      """simple docstring"""
  
  
  
      return self.root is None
  
   def 		lowercase_						( self :	Any,					a_ :	Any					):
  
  
  
  
  
      """simple docstring"""
  
  
  
      UpperCamelCase__ 						=						self._put(self.root,					a_					)
  
   def 		lowercase_						( self :	str,					a_ :	Tuple,					a_ :	Optional[int],					a_ :	Optional[Any] = None					):
  
  
  
  
  
      """simple docstring"""
  
  
  
      if node is None:
         UpperCamelCase__ 						=						Node(a_,					a_					)
      else:
         if label < node.label:
            UpperCamelCase__ 						=						self._put(node.left,					a_,					a_					)
         elif label > node.label:
            UpperCamelCase__ 						=						self._put(node.right,					a_,					a_					)
         else:
            UpperCamelCase__ 						=						f'Node with label {label} already exists'
            raise Exception(a_					)
  
      return node
  
   def 		lowercase_						( self :	Tuple,					a_ :	Optional[int]					):
  
  
  
  
  
      """simple docstring"""
  
  
  
      return self._search(self.root,					a_					)
  
   def 		lowercase_						( self :	Tuple,					a_ :	Any,					a_ :	List[Any]					):
  
  
  
  
  
      """simple docstring"""
  
  
  
      if node is None:
         UpperCamelCase__ 						=						f'Node with label {label} does not exist'
         raise Exception(a_					)
      else:
         if label < node.label:
            UpperCamelCase__ 						=						self._search(node.left,					a_					)
         elif label > node.label:
            UpperCamelCase__ 						=						self._search(node.right,					a_					)
  
      return node
  
   def 		lowercase_						( self :	Optional[int],					a_ :	Tuple					):
  
  
  
  
  
      """simple docstring"""
  
  
  
      UpperCamelCase__ 						=						self.search(a_					)
      if node.right and node.left:
         UpperCamelCase__ 						=						self._get_lowest_node(node.right					)
         UpperCamelCase__ 						=						node.left
         UpperCamelCase__ 						=						node.right
         UpperCamelCase__ 						=						lowest_node
         if node.right:
            UpperCamelCase__ 						=						lowest_node
         self._reassign_nodes(a_,					a_					)
      elif not node.right and node.left:
         self._reassign_nodes(a_,					node.left					)
      elif node.right and not node.left:
         self._reassign_nodes(a_,					node.right					)
      else:
         self._reassign_nodes(a_,					a_					)
  
   def 		lowercase_						( self :	Any,					a_ :	List[str],					a_ :	int					):
  
  
  
  
  
      """simple docstring"""
  
  
  
      if new_children:
         UpperCamelCase__ 						=						node.parent
  
      if node.parent:
         if node.parent.right == node:
            UpperCamelCase__ 						=						new_children
         else:
            UpperCamelCase__ 						=						new_children
      else:
         UpperCamelCase__ 						=						new_children
  
   def 		lowercase_						( self :	str,					a_ :	Optional[int]					):
  
  
  
  
  
      """simple docstring"""
  
  
  
      if node.left:
         UpperCamelCase__ 						=						self._get_lowest_node(node.left					)
      else:
         UpperCamelCase__ 						=						node
         self._reassign_nodes(a_,					node.right					)
  
      return lowest_node
  
   def 		lowercase_						( self :	int,					a_ :	Optional[int]					):
  
  
  
  
  
      """simple docstring"""
  
  
  
      try:
         self.search(a_					)
         return True
      except Exception:
         return False
  
   def 		lowercase_						( self :	int					):
  
  
  
  
  
      """simple docstring"""
  
  
  
      if self.root is None:
         raise Exception("Binary search tree is empty"					)
  
      UpperCamelCase__ 						=						self.root
      while node.right is not None:
         UpperCamelCase__ 						=						node.right
  
      return node.label
  
   def 		lowercase_						( self :	Optional[int]					):
  
  
  
  
  
      """simple docstring"""
  
  
  
      if self.root is None:
         raise Exception("Binary search tree is empty"					)
  
      UpperCamelCase__ 						=						self.root
      while node.left is not None:
         UpperCamelCase__ 						=						node.left
  
      return node.label
  
   def 		lowercase_						( self :	List[Any]					):
  
  
  
  
  
      """simple docstring"""
  
  
  
      return self._inorder_traversal(self.root					)
  
   def 		lowercase_						( self :	List[Any],					a_ :	Tuple					):
  
  
  
  
  
      """simple docstring"""
  
  
  
      if node is not None:
         yield from self._inorder_traversal(node.left					)
         yield node
         yield from self._inorder_traversal(node.right					)
  
   def 		lowercase_						( self :	Union[str, Any]					):
  
  
  
  
  
      """simple docstring"""
  
  
  
      return self._preorder_traversal(self.root					)
  
   def 		lowercase_						( self :	List[str],					a_ :	int					):
  
  
  
  
  
      """simple docstring"""
  
  
  
      if node is not None:
         yield node
         yield from self._preorder_traversal(node.left					)
         yield from self._preorder_traversal(node.right					)
  
  
  
  
  
  
  
  class  UpperCAmelCase (       unittest.TestCase):
  
   @staticmethod
   def 		lowercase_						( ):
  
  
  
  
  
      """simple docstring"""
  
  
  
      UpperCamelCase__ 						=						BinarySearchTree()
      t.put(8					)
      t.put(3					)
      t.put(6					)
      t.put(1					)
      t.put(10					)
      t.put(14					)
      t.put(13					)
      t.put(4					)
      t.put(7					)
      t.put(5					)
  
      return t
  
   def 		lowercase_						( self :	List[Any]					):
  
  
  
  
  
      """simple docstring"""
  
  
  
      UpperCamelCase__ 						=						BinarySearchTree()
      assert t.is_empty()
  
      t.put(8					)
      assert t.root is not None
      assert t.root.parent is None
      assert t.root.label == 8
  
      t.put(10					)
      assert t.root.right is not None
      assert t.root.right.parent == t.root
      assert t.root.right.label == 10
  
      t.put(3					)
      assert t.root.left is not None
      assert t.root.left.parent == t.root
      assert t.root.left.label == 3
  
      t.put(6					)
      assert t.root.left.right is not None
      assert t.root.left.right.parent == t.root.left
      assert t.root.left.right.label == 6
  
      t.put(1					)
      assert t.root.left.left is not None
      assert t.root.left.left.parent == t.root.left
      assert t.root.left.left.label == 1
  
      with self.assertRaises(a_					):  # noqa: B017
         t.put(1					)
  
   def 		lowercase_						( self :	List[Any]					):
  
  
  
  
  
      """simple docstring"""
  
  
  
      UpperCamelCase__ 						=						self._get_binary_search_tree()
  
      UpperCamelCase__ 						=						t.search(6					)
      assert node.label == 6
  
      UpperCamelCase__ 						=						t.search(13					)
      assert node.label == 13
  
      with self.assertRaises(a_					):  # noqa: B017
         t.search(2					)
  
   def 		lowercase_						( self :	Dict					):
  
  
  
  
  
      """simple docstring"""
  
  
  
      UpperCamelCase__ 						=						self._get_binary_search_tree()
  
      t.remove(13					)
      assert t.root is not None
      assert t.root.right is not None
      assert t.root.right.right is not None
      assert t.root.right.right.right is None
      assert t.root.right.right.left is None
  
      t.remove(7					)
      assert t.root.left is not None
      assert t.root.left.right is not None
      assert t.root.left.right.left is not None
      assert t.root.left.right.right is None
      assert t.root.left.right.left.label == 4
  
      t.remove(6					)
      assert t.root.left.left is not None
      assert t.root.left.right.right is not None
      assert t.root.left.left.label == 1
      assert t.root.left.right.label == 4
      assert t.root.left.right.right.label == 5
      assert t.root.left.right.left is None
      assert t.root.left.left.parent == t.root.left
      assert t.root.left.right.parent == t.root.left
  
      t.remove(3					)
      assert t.root is not None
      assert t.root.left.label == 4
      assert t.root.left.right.label == 5
      assert t.root.left.left.label == 1
      assert t.root.left.parent == t.root
      assert t.root.left.left.parent == t.root.left
      assert t.root.left.right.parent == t.root.left
  
      t.remove(4					)
      assert t.root.left is not None
      assert t.root.left.left is not None
      assert t.root.left.label == 5
      assert t.root.left.right is None
      assert t.root.left.left.label == 1
      assert t.root.left.parent == t.root
      assert t.root.left.left.parent == t.root.left
  
   def 		lowercase_						( self :	int					):
  
  
  
  
  
      """simple docstring"""
  
  
  
      UpperCamelCase__ 						=						self._get_binary_search_tree()
  
      t.remove(3					)
      assert t.root is not None
      assert t.root.left is not None
      assert t.root.left.left is not None
      assert t.root.left.right is not None
      assert t.root.left.right.left is not None
      assert t.root.left.right.right is not None
      assert t.root.left.label == 4
      assert t.root.left.right.label == 6
      assert t.root.left.left.label == 1
      assert t.root.left.right.right.label == 7
      assert t.root.left.right.left.label == 5
      assert t.root.left.parent == t.root
      assert t.root.left.right.parent == t.root.left
      assert t.root.left.left.parent == t.root.left
      assert t.root.left.right.left.parent == t.root.left.right
  
   def 		lowercase_						( self :	Optional[Any]					):
  
  
  
  
  
      """simple docstring"""
  
  
  
      UpperCamelCase__ 						=						self._get_binary_search_tree()
      t.empty()
      assert t.root is None
  
   def 		lowercase_						( self :	Optional[int]					):
  
  
  
  
  
      """simple docstring"""
  
  
  
      UpperCamelCase__ 						=						self._get_binary_search_tree()
      assert not t.is_empty()
  
      t.empty()
      assert t.is_empty()
  
   def 		lowercase_						( self :	Any					):
  
  
  
  
  
      """simple docstring"""
  
  
  
      UpperCamelCase__ 						=						self._get_binary_search_tree()
  
      assert t.exists(6					)
      assert not t.exists(-1					)
  
   def 		lowercase_						( self :	List[str]					):
  
  
  
  
  
      """simple docstring"""
  
  
  
      UpperCamelCase__ 						=						self._get_binary_search_tree()
  
      assert t.get_max_label() == 14
  
      t.empty()
      with self.assertRaises(a_					):  # noqa: B017
         t.get_max_label()
  
   def 		lowercase_						( self :	List[Any]					):
  
  
  
  
  
      """simple docstring"""
  
  
  
      UpperCamelCase__ 						=						self._get_binary_search_tree()
  
      assert t.get_min_label() == 1
  
      t.empty()
      with self.assertRaises(a_					):  # noqa: B017
         t.get_min_label()
  
   def 		lowercase_						( self :	int					):
  
  
  
  
  
      """simple docstring"""
  
  
  
      UpperCamelCase__ 						=						self._get_binary_search_tree()
  
      UpperCamelCase__ 						=						[i.label for i in t.inorder_traversal()]
      assert inorder_traversal_nodes == [1, 3, 4, 5, 6, 7, 8, 10, 13, 14]
  
   def 		lowercase_						( self :	str					):
  
  
  
  
  
      """simple docstring"""
  
  
  
      UpperCamelCase__ 						=						self._get_binary_search_tree()
  
      UpperCamelCase__ 						=						[i.label for i in t.preorder_traversal()]
      assert preorder_traversal_nodes == [8, 3, 1, 6, 4, 5, 7, 10, 14, 13]
  
  
  
  
  
  
  
  def        SCREAMING_SNAKE_CASE__(		)		->					int:
  
  
  
  
  
     '''simple docstring'''
  
  
  
  
  
  
  
     UpperCamelCase__ 						=						BinarySearchTree()
     t.put(8   )
     t.put(3   )
     t.put(6   )
     t.put(1   )
     t.put(10   )
     t.put(14   )
     t.put(13   )
     t.put(4   )
     t.put(7   )
     t.put(5   )
  
     print(
         "\n            8\n           / \\\n          3   10\n         / \\    \\\n        1   6    14\n           / \\   /\n          4   7 13\n           \\\n            5\n        "   )
  
     print("Label 6 exists:"    ,		t.exists(6   )   )
     print("Label 13 exists:"    ,		t.exists(13   )   )
     print("Label -1 exists:"    ,		t.exists(-1   )   )
     print("Label 12 exists:"    ,		t.exists(12   )   )
  
     # Prints all the elements of the list in inorder traversal
     UpperCamelCase__ 						=						[i.label for i in t.inorder_traversal()]
     print("Inorder traversal:"    ,		UpperCamelCase__   )
  
     # Prints all the elements of the list in preorder traversal
     UpperCamelCase__ 						=						[i.label for i in t.preorder_traversal()]
     print("Preorder traversal:"    ,		UpperCamelCase__   )
  
     print("Max. label:"    ,		t.get_max_label()   )
     print("Min. label:"    ,		t.get_min_label()   )
  
     # Delete elements
     print("\nDeleting elements 13, 10, 8, 3, 6, 14"   )
     print(
         "\n          4\n         / \\\n        1   7\n             \\\n              5\n        "   )
     t.remove(13   )
     t.remove(10   )
     t.remove(8   )
     t.remove(3   )
     t.remove(6   )
     t.remove(14   )
  
     # Prints all the elements of the list in inorder traversal after delete
     UpperCamelCase__ 						=						[i.label for i in t.inorder_traversal()]
     print("Inorder traversal after delete:"    ,		UpperCamelCase__   )
  
     # Prints all the elements of the list in preorder traversal after delete
     UpperCamelCase__ 						=						[i.label for i in t.preorder_traversal()]
     print("Preorder traversal after delete:"    ,		UpperCamelCase__   )
  
     print("Max. label:"    ,		t.get_max_label()   )
     print("Min. label:"    ,		t.get_min_label()   )
  
  
  if __name__ == "__main__":
         binary_search_tree_example()
style_context: 
  
  
  '''simple docstring'''
  
  import os
  import sys
  from pathlib import Path
  
  import torch
  
  from transformers.testing_utils import TestCasePlus, execute_subprocess_async, require_torch_multi_gpu
  from utils import load_json
  
  
  __lowercase:		Union[str, Any]							=     torch.cuda.is_available()
  __lowercase:		str							=     [" Sam ate lunch today.", "Sams lunch ingredients."]
  __lowercase:		Optional[Any]							=     ["A very interesting story about what I ate for lunch.", "Avocado, celery, turkey, coffee"]
  __lowercase:		Optional[int]							=     {
      "max_tokens_per_batch": None,
      "supervise_forward": True,
      "normalize_hidden": True,
      "label_smoothing": 0.2,
      "eval_max_gen_length": None,
      "eval_beams": 1,
      "val_metric": "loss",
      "save_top_k": 1,
      "adafactor": True,
      "early_stopping_patience": 2,
      "logger_name": "default",
      "length_penalty": 0.5,
      "cache_dir": "",
      "task": "summarization",
      "num_workers": 2,
      "alpha_hid": 0,
      "freeze_embeds": True,
      "enc_only": False,
      "tgt_suffix": "",
      "resume_from_checkpoint": None,
      "sortish_sampler": True,
      "student_decoder_layers": 1,
      "val_check_interval": 1.0,
      "output_dir": "",
      "fp16": False,  # TODO(SS): set this to CUDA_AVAILABLE if ci installs apex or start using native amp
      "no_teacher": False,
      "fp16_opt_level": "O1",
      "gpus": 1 if CUDA_AVAILABLE else 0,
      "n_tpu_cores": 0,
      "max_grad_norm": 1.0,
      "do_train": True,
      "do_predict": True,
      "accumulate_grad_batches": 1,
      "server_ip": "",
      "server_port": "",
      "seed": 42,
      "model_name_or_path": "sshleifer/bart-tiny-random",
      "config_name": "",
      "tokenizer_name": "facebook/bart-large",
      "do_lower_case": False,
      "learning_rate": 0.3,
      "lr_scheduler": "linear",
      "weight_decay": 0.0,
      "adam_epsilon": 1e-0_8,
      "warmup_steps": 0,
      "max_epochs": 1,
      "train_batch_size": 2,
      "eval_batch_size": 2,
      "max_source_length": 12,
      "max_target_length": 12,
      "val_max_target_length": 12,
      "test_max_target_length": 12,
      "fast_dev_run": False,
      "no_cache": False,
      "n_train": -1,
      "n_val": -1,
      "n_test": -1,
      "student_encoder_layers": 1,
      "freeze_encoder": False,
      "auto_scale_batch_size": False,
      "overwrite_output_dir": False,
      "student": None,
  }
  
  
  
  def        SCREAMING_SNAKE_CASE__(		_UpperCamelCase      :				Path    ,		_UpperCamelCase      :				list   )		->					Optional[Any]:
  
  
  
  
  
     '''simple docstring'''
  
  
  
  
  
  
  
     UpperCamelCase__ 						=						"\n".join(_UpperCamelCase   )
     Path(_UpperCamelCase   ).open("w"   ).writelines(_UpperCamelCase   )
  
  
  
  def        SCREAMING_SNAKE_CASE__(		_UpperCamelCase      :				Optional[Any]   )		->					List[str]:
  
  
  
  
  
     '''simple docstring'''
  
  
  
  
  
  
  
     for split in ["train", "val", "test"]:
        _dump_articles(os.path.join(_UpperCamelCase    ,		F'{split}.source'   )    ,		_UpperCamelCase   )
        _dump_articles(os.path.join(_UpperCamelCase    ,		F'{split}.target'   )    ,		_UpperCamelCase   )
     return tmp_dir
  
  
  
  
  
  
  
  class  UpperCAmelCase (       SCREAMING_SNAKE_CASE__):
  
   @classmethod
   def 		lowercase_						( cls :	List[Any]					):
  
  
  
  
  
      """simple docstring"""
  
  
  
      return cls
  
   @require_torch_multi_gpu
   def 		lowercase_						( self :	List[Any]					):
  
  
  
  
  
      """simple docstring"""
  
  
  
      UpperCamelCase__ 						=						{
          "no_teacher": True,
          "freeze_encoder": True,
          "gpus": 2,
          "overwrite_output_dir": True,
          "sortish_sampler": True,
      }
      self._test_distiller_cli_fork(a_,					check_contents=a_					)
  
   def 		lowercase_						( self :	Tuple,					a_ :	Optional[Any],					a_ :	Optional[int]=True					):
  
  
  
  
  
      """simple docstring"""
  
  
  
      UpperCamelCase__ 						=						{
          "label_smoothing": 0.0,
          "early_stopping_patience": -1,
          "train_batch_size": 1,
          "eval_batch_size": 2,
          "max_epochs": 2,
          "alpha_mlm": 0.2,
          "alpha_ce": 0.8,
          "do_predict": True,
          "model_name_or_path": "sshleifer/tinier_bart",
          "teacher": CHEAP_ARGS["model_name_or_path"],
          "val_check_interval": 0.5,
      }
      default_updates.update(a_					)
      UpperCamelCase__ 						=						CHEAP_ARGS.copy()
      UpperCamelCase__ 						=						make_test_data_dir(tmp_dir=self.get_auto_remove_tmp_dir()					)
      UpperCamelCase__ 						=						self.get_auto_remove_tmp_dir()
      args_d.update(data_dir=a_,					output_dir=a_,					**a_					)
  
      def convert(a_ :	str,					a_ :	Any					):
         if k in ["tgt_suffix", "server_ip", "server_port", "out", "n_tpu_cores"]:
            return ""
         if v is False or v is None:
            return ""
         if v is True:  # or len(str(v))==0:
            return f'--{k}'
         return f'--{k}={v}'
  
      UpperCamelCase__ 						=						[x for x in (convert(a_,					a_					) for k, v in args_d.items()) if len(a_					)]
      UpperCamelCase__ 						=						[sys.executable, f'{self.test_file_dir}/distillation.py'] + cli_args
      execute_subprocess_async(a_,					env=self.get_env()					)
  
      UpperCamelCase__ 						=						os.listdir(a_					)
      UpperCamelCase__ 						=						{os.path.basename(a_					) for p in contents}
      UpperCamelCase__ 						=						[p for p in contents if p.endswith("ckpt"					)]
      assert len(a_					) > 0
  
      self.assertIn("test_generations.txt",					a_					)
      self.assertIn("test_results.txt",					a_					)
  
      # get the following from the module, (we don't have access to `model` here)
      UpperCamelCase__ 						=						os.path.join(a_,					"metrics.json"					)
      UpperCamelCase__ 						=						"rouge2"
  
      UpperCamelCase__ 						=						load_json(a_					)
      # {'test': [{'test_avg_loss': 10.63731575012207, 'test_avg_rouge1': 0.0, 'test_avg_rouge2': 0.0, 'test_avg_rougeL': 0.0, 'test_avg_gen_time': 0.1822289228439331, 'test_avg_gen_len': 142.0, 'step_count': 1}]}
      print(a_					)
      UpperCamelCase__ 						=						metrics["val"][-1]
      self.assertGreaterEqual(last_step_stats["val_avg_gen_time"],					0.01					)
      self.assertIsInstance(last_step_stats[f'val_avg_{val_metric}'],					a_					)
      self.assertEqual(len(metrics["test"]					),					1					)
      UpperCamelCase__ 						=						int(args_d["max_epochs"] * (1 / args_d["val_check_interval"]) / 2 + 1					)
      self.assertEqual(len(metrics["val"]					),					a_					)