




import os
import unittest

from transformers import is_torch_available
from transformers.testing_utils import require_sentencepiece, require_tokenizers, require_torch, slow, torch_device


if is_torch_available():
  import torch

  from transformers import GPTaLMHeadModel
@require_torch
@require_sentencepiece
@require_tokenizers
class 							__lowercase   (			unittest.TestCase    ):



     @slow
     @unittest.skip('''Model is not available.'''       )
     def 				__magic_name__		(  self   :							Optional[int]       ):
       a_		    =  '''nvidia/megatron-gpt2-345m/'''
       if "MYDIR" in os.environ:
         a_		    =  os.path.join(os.environ['''MYDIR''']      ,		lowercase__       )
       a_		    =  GPTaLMHeadModel.from_pretrained(lowercase__       )
       model.to(lowercase__       )
       model.half()

       a_		    =  torch.tensor(
           [[1_0_1, 7_1_1_0, 1_0_0_5, 1_0_5_6, 2_0_2_3, 1_1_3_3_3, 1_7_4_1_3, 1_0_2_9, 1_0_2]]      ,		device=lowercase__      ,		dtype=torch.long      ,		)

       with torch.no_grad():
         a_		    =  model(lowercase__       ).logits

       a_		    =  torch.Size((1, 9, 5_0_2_5_7)       )
       self.assertEqual(output.shape      ,		lowercase__       )

       a_		    =  torch.tensor(
           [
               4.9414,
               -0.2920,
               -1.2148,
               -4.0273,
               -0.5161,
               -5.2109,
               -1.2412,
               -1.8301,
               -1.7734,
               -4.7148,
               -0.2317,
               -1.0811,
               -2.1777,
               0.4141,
               -3.7969,
               -4.0586,
               -2.5332,
               -3.3809,
               4.3867,
           ]      ,		device=lowercase__      ,		dtype=torch.half      ,		)

       for i in range(1_9       ):
         a_    , a_		    =  8 * i // 1_7, 2_7_9_2 * i  # along the diagonal
         a_    , a_		    =  output[0, r, c], expected_diag[i]
         a_		    =  f"row={r} col={c} computed={computed} expected={expected}"
         self.assertAlmostEqual(lowercase__      ,		lowercase__      ,		delta=1e-4      ,		msg=lowercase__       )






from __future__ import annotations

import sys
class 							__lowercase   :



     def __init__(  self   :							Any      ,		lowercase__   :							str      ,		lowercase__   :							int       ):
       a_		    =  letter
       a_		    =  freq
       a_		    =  {}



     def __repr__(  self   :							List[Any]       ):
       return f"{self.letter}:{self.freq}"



class 							__lowercase   :



     def __init__(  self   :							Optional[int]      ,		lowercase__   :							int      ,		lowercase__   :							Letter | TreeNode      ,		lowercase__   :							Letter | TreeNode       ):
       a_		    =  freq
       a_		    =  left
       a_		    =  right






def 				UpperCAmelCase__  (							_A			):






  """simple docstring"""


  a_		    =  {}
  with open(_A			) as f:
    while True:
      a_		    =  f.read(1			)
      if not c:
        break
      a_		    =  chars[c] + 1 if c in chars else 1
  return sorted((Letter(_A      ,      _A			) for c, f in chars.items())      ,      key=lambda _A			: x.freq			)






def 				UpperCAmelCase__  (							_A			):






  """simple docstring"""


  a_		    =  letters  # type: ignore
  while len(_A			) > 1:
    a_		    =  response.pop(0			)
    a_		    =  response.pop(0			)
    a_		    =  left.freq + right.freq
    a_		    =  TreeNode(_A      ,      _A      ,      _A			)
    response.append(_A			)
    response.sort(key=lambda _A			: x.freq			)
  return response[0]






def 				UpperCAmelCase__  (							_A      ,      _A			):






  """simple docstring"""


  if isinstance(_A      ,      _A			):
    a_		    =  bitstring
    return [root]
  a_		    =  root  # type: ignore
  a_		    =  []
  letters += traverse_tree(treenode.left      ,      bitstring + '''0'''			)
  letters += traverse_tree(treenode.right      ,      bitstring + '''1'''			)
  return letters






def 				UpperCAmelCase__  (							_A			):






  """simple docstring"""


  a_		    =  parse_file(_A			)
  a_		    =  build_tree(_A			)
  a_		    =  {
      k: v for letter in traverse_tree(_A      ,      ''''''			) for k, v in letter.bitstring.items()
  }
  print(f"Huffman Coding  of {file_path}: "			)
  with open(_A			) as f:
    while True:
      a_		    =  f.read(1			)
      if not c:
        break
      print(letters[c]      ,      end=''' '''			)
  print()


if __name__ == "__main__":
  # pass the file path to the huffman function
  huffman(sys.argv[1])
