

import json
import os
import pickle
import shutil
import tempfile
from unittest import TestCase
from unittest.mock import patch

import numpy as np
from datasets import Dataset

from transformers import is_faiss_available
from transformers.models.bart.configuration_bart import BartConfig
from transformers.models.bart.tokenization_bart import BartTokenizer
from transformers.models.bert.tokenization_bert import VOCAB_FILES_NAMES as DPR_VOCAB_FILES_NAMES
from transformers.models.dpr.configuration_dpr import DPRConfig
from transformers.models.dpr.tokenization_dpr import DPRContextEncoderTokenizer, DPRQuestionEncoderTokenizer
from transformers.models.rag.configuration_rag import RagConfig
from transformers.models.rag.retrieval_rag import CustomHFIndex, RagRetriever
from transformers.models.roberta.tokenization_roberta import VOCAB_FILES_NAMES as BART_VOCAB_FILES_NAMES
from transformers.testing_utils import require_faiss, require_sentencepiece, require_tokenizers, require_torch


if is_faiss_available():
					import faiss







@require_faiss
class 					lowercase							(			lowercase_     ):




				def        a				(   self			):
											snake_case_     							=       tempfile.mkdtemp()
											snake_case_     							=       8

											# DPR tok
											snake_case_     							=       [
											    '[UNK]',
											    '[CLS]',
											    '[SEP]',
											    '[PAD]',
											    '[MASK]',
											    'want',
											    '##want',
											    '##ed',
											    'wa',
											    'un',
											    'runn',
											    '##ing',
											    ',',
											    'low',
											    'lowest',
											]
											snake_case_     							=       os.path.join(self.tmpdirname ,  'dpr_tokenizer'			)
											os.makedirs(snake_case ,  exist_ok=snake_case			)
											snake_case_     							=       os.path.join(snake_case ,  DPR_VOCAB_FILES_NAMES['vocab_file']			)
											with open(self.vocab_file ,  'w' ,  encoding='utf-8'			) as vocab_writer:
																		vocab_writer.write(''.join([x + '\n' for x in vocab_tokens]			)			)

											# BART tok
											snake_case_     							=       [
											    'l',
											    'o',
											    'w',
											    'e',
											    'r',
											    's',
											    't',
											    'i',
											    'd',
											    'n',
											    '\u0120',
											    '\u0120l',
											    '\u0120n',
											    '\u0120lo',
											    '\u0120low',
											    'er',
											    '\u0120lowest',
											    '\u0120newer',
											    '\u0120wider',
											    '<unk>',
											]
											snake_case_     							=       dict(zip(snake_case ,  range(len(snake_case			)			)			)			)
											snake_case_     							=       ['#version: 0.2', '\u0120 l', '\u0120l o', '\u0120lo w', 'e r', '']
											snake_case_     							=       {'unk_token': '<unk>'}

											snake_case_     							=       os.path.join(self.tmpdirname ,  'bart_tokenizer'			)
											os.makedirs(snake_case ,  exist_ok=snake_case			)
											snake_case_     							=       os.path.join(snake_case ,  BART_VOCAB_FILES_NAMES['vocab_file']			)
											snake_case_     							=       os.path.join(snake_case ,  BART_VOCAB_FILES_NAMES['merges_file']			)
											with open(self.vocab_file ,  'w' ,  encoding='utf-8'			) as fp:
																		fp.write(json.dumps(snake_case			) + '\n'			)
											with open(self.merges_file ,  'w' ,  encoding='utf-8'			) as fp:
																		fp.write('\n'.join(snake_case			)			)




				def        a				(   self			):
											return DPRQuestionEncoderTokenizer.from_pretrained(os.path.join(self.tmpdirname ,  'dpr_tokenizer'			)			)




				def        a				(   self			):
											return DPRContextEncoderTokenizer.from_pretrained(os.path.join(self.tmpdirname ,  'dpr_tokenizer'			)			)




				def        a				(   self			):
											return BartTokenizer.from_pretrained(os.path.join(self.tmpdirname ,  'bart_tokenizer'			)			)




				def        a				(   self			):
											shutil.rmtree(self.tmpdirname			)




				def        a				(   self			):
											snake_case_     							=       Dataset.from_dict(
											    {
											        'id': ['0', '1'],
											        'text': ['foo', 'bar'],
											        'title': ['Foo', 'Bar'],
											        'embeddings': [np.ones(self.retrieval_vector_size			), 2 * np.ones(self.retrieval_vector_size			)],
											    }			)
											dataset.add_faiss_index('embeddings' ,  string_factory='Flat' ,  metric_type=faiss.METRIC_INNER_PRODUCT			)
											return dataset




				def        a				(   self			):
											snake_case_     							=       self.get_dummy_dataset()
											snake_case_     							=       RagConfig(
											    retrieval_vector_size=self.retrieval_vector_size ,  question_encoder=DPRConfig().to_dict() ,  generator=BartConfig().to_dict() ,  )
											with patch('transformers.models.rag.retrieval_rag.load_dataset'			) as mock_load_dataset:
																		snake_case_     							=       dataset
																		snake_case_     							=       RagRetriever(
																		    snake_case ,  question_encoder_tokenizer=self.get_dpr_tokenizer() ,  generator_tokenizer=self.get_bart_tokenizer() ,  )
											return retriever




				def        a				(   self ,  snake_case			):
											snake_case_     							=       self.get_dummy_dataset()
											snake_case_     							=       RagConfig(
											    retrieval_vector_size=self.retrieval_vector_size ,  question_encoder=DPRConfig().to_dict() ,  generator=BartConfig().to_dict() ,  index_name='custom' ,  )
											if from_disk:
																		snake_case_     							=       os.path.join(self.tmpdirname ,  'dataset'			)
																		snake_case_     							=       os.path.join(self.tmpdirname ,  'index.faiss'			)
																		dataset.get_index('embeddings'			).save(os.path.join(self.tmpdirname ,  'index.faiss'			)			)
																		dataset.drop_index('embeddings'			)
																		dataset.save_to_disk(os.path.join(self.tmpdirname ,  'dataset'			)			)
																		del dataset
																		snake_case_     							=       RagRetriever(
																		    snake_case ,  question_encoder_tokenizer=self.get_dpr_tokenizer() ,  generator_tokenizer=self.get_bart_tokenizer() ,  )
											else:
																		snake_case_     							=       RagRetriever(
																		    snake_case ,  question_encoder_tokenizer=self.get_dpr_tokenizer() ,  generator_tokenizer=self.get_bart_tokenizer() ,  index=CustomHFIndex(config.retrieval_vector_size ,  snake_case			) ,  )
											return retriever




				def        a				(   self			):
											snake_case_     							=       Dataset.from_dict(
											    {
											        'id': ['0', '1'],
											        'text': ['foo', 'bar'],
											        'title': ['Foo', 'Bar'],
											        'embeddings': [np.ones(self.retrieval_vector_size + 1			), 2 * np.ones(self.retrieval_vector_size + 1			)],
											    }			)
											dataset.add_faiss_index('embeddings' ,  string_factory='Flat' ,  metric_type=faiss.METRIC_INNER_PRODUCT			)

											snake_case_     							=       os.path.join(self.tmpdirname ,  'hf_bert_base.hnswSQ8_correct_phi_128.c_index'			)
											dataset.save_faiss_index('embeddings' ,  index_file_name + '.index.dpr'			)
											pickle.dump(dataset['id'] ,  open(index_file_name + '.index_meta.dpr' ,  'wb'			)			)

											snake_case_     							=       os.path.join(self.tmpdirname ,  'psgs_w100.tsv.pkl'			)
											snake_case_     							=       {sample['id']: [sample['text'], sample['title']] for sample in dataset}
											pickle.dump(snake_case ,  open(snake_case ,  'wb'			)			)

											snake_case_     							=       RagConfig(
											    retrieval_vector_size=self.retrieval_vector_size ,  question_encoder=DPRConfig().to_dict() ,  generator=BartConfig().to_dict() ,  index_name='legacy' ,  index_path=self.tmpdirname ,  )
											snake_case_     							=       RagRetriever(
											    snake_case ,  question_encoder_tokenizer=self.get_dpr_tokenizer() ,  generator_tokenizer=self.get_bart_tokenizer()			)
											return retriever




				def        a				(   self			):
											snake_case_     							=       1
											snake_case_     							=       self.get_dummy_canonical_hf_index_retriever()
											snake_case_     							=       np.array(
											    [np.ones(self.retrieval_vector_size			), -np.ones(self.retrieval_vector_size			)] ,  dtype=np.floataa			)
											snake_case_							,       snake_case_							,       snake_case_     							=       retriever.retrieve(snake_case ,  n_docs=snake_case			)
											self.assertEqual(retrieved_doc_embeds.shape ,  (2, n_docs, self.retrieval_vector_size)			)
											self.assertEqual(len(snake_case			) ,  2			)
											self.assertEqual(sorted(doc_dicts[0]			) ,  ['embeddings', 'id', 'text', 'title']			)
											self.assertEqual(len(doc_dicts[0]['id']			) ,  snake_case			)
											self.assertEqual(doc_dicts[0]['id'][0] ,  '1'			)  # max inner product is reached with second doc
											self.assertEqual(doc_dicts[1]['id'][0] ,  '0'			)  # max inner product is reached with first doc
											self.assertListEqual(doc_ids.tolist() ,  [[1], [0]]			)




				def        a				(   self			):
											snake_case_     							=       self.get_dummy_canonical_hf_index_retriever()
											with tempfile.TemporaryDirectory() as tmp_dirname:
																		with patch('transformers.models.rag.retrieval_rag.load_dataset'			) as mock_load_dataset:
																									snake_case_     							=       self.get_dummy_dataset()
																									retriever.save_pretrained(snake_case			)
																									snake_case_     							=       RagRetriever.from_pretrained(snake_case			)
																									self.assertIsInstance(snake_case ,  snake_case			)
																									snake_case_     							=       np.array(
																									    [np.ones(self.retrieval_vector_size			), -np.ones(self.retrieval_vector_size			)] ,  dtype=np.floataa			)
																									snake_case_     							=       retriever.retrieve(snake_case ,  n_docs=1			)
																									self.assertTrue(out is not None			)




				def        a				(   self			):
											snake_case_     							=       1
											snake_case_     							=       self.get_dummy_custom_hf_index_retriever(from_disk=snake_case			)
											snake_case_     							=       np.array(
											    [np.ones(self.retrieval_vector_size			), -np.ones(self.retrieval_vector_size			)] ,  dtype=np.floataa			)
											snake_case_							,       snake_case_							,       snake_case_     							=       retriever.retrieve(snake_case ,  n_docs=snake_case			)
											self.assertEqual(retrieved_doc_embeds.shape ,  (2, n_docs, self.retrieval_vector_size)			)
											self.assertEqual(len(snake_case			) ,  2			)
											self.assertEqual(sorted(doc_dicts[0]			) ,  ['embeddings', 'id', 'text', 'title']			)
											self.assertEqual(len(doc_dicts[0]['id']			) ,  snake_case			)
											self.assertEqual(doc_dicts[0]['id'][0] ,  '1'			)  # max inner product is reached with second doc
											self.assertEqual(doc_dicts[1]['id'][0] ,  '0'			)  # max inner product is reached with first doc
											self.assertListEqual(doc_ids.tolist() ,  [[1], [0]]			)




				def        a				(   self			):
											snake_case_     							=       self.get_dummy_custom_hf_index_retriever(from_disk=snake_case			)
											with tempfile.TemporaryDirectory() as tmp_dirname:
																		retriever.save_pretrained(snake_case			)
																		snake_case_     							=       RagRetriever.from_pretrained(snake_case			)
																		self.assertIsInstance(snake_case ,  snake_case			)
																		snake_case_     							=       np.array(
																		    [np.ones(self.retrieval_vector_size			), -np.ones(self.retrieval_vector_size			)] ,  dtype=np.floataa			)
																		snake_case_     							=       retriever.retrieve(snake_case ,  n_docs=1			)
																		self.assertTrue(out is not None			)




				def        a				(   self			):
											snake_case_     							=       1
											snake_case_     							=       self.get_dummy_custom_hf_index_retriever(from_disk=snake_case			)
											snake_case_     							=       np.array(
											    [np.ones(self.retrieval_vector_size			), -np.ones(self.retrieval_vector_size			)] ,  dtype=np.floataa			)
											snake_case_							,       snake_case_							,       snake_case_     							=       retriever.retrieve(snake_case ,  n_docs=snake_case			)
											self.assertEqual(retrieved_doc_embeds.shape ,  (2, n_docs, self.retrieval_vector_size)			)
											self.assertEqual(len(snake_case			) ,  2			)
											self.assertEqual(sorted(doc_dicts[0]			) ,  ['embeddings', 'id', 'text', 'title']			)
											self.assertEqual(len(doc_dicts[0]['id']			) ,  snake_case			)
											self.assertEqual(doc_dicts[0]['id'][0] ,  '1'			)  # max inner product is reached with second doc
											self.assertEqual(doc_dicts[1]['id'][0] ,  '0'			)  # max inner product is reached with first doc
											self.assertListEqual(doc_ids.tolist() ,  [[1], [0]]			)




				def        a				(   self			):
											snake_case_     							=       self.get_dummy_custom_hf_index_retriever(from_disk=snake_case			)
											with tempfile.TemporaryDirectory() as tmp_dirname:
																		retriever.save_pretrained(snake_case			)
																		snake_case_     							=       RagRetriever.from_pretrained(snake_case			)
																		self.assertIsInstance(snake_case ,  snake_case			)
																		snake_case_     							=       np.array(
																		    [np.ones(self.retrieval_vector_size			), -np.ones(self.retrieval_vector_size			)] ,  dtype=np.floataa			)
																		snake_case_     							=       retriever.retrieve(snake_case ,  n_docs=1			)
																		self.assertTrue(out is not None			)




				def        a				(   self			):
											snake_case_     							=       1
											snake_case_     							=       self.get_dummy_legacy_index_retriever()
											snake_case_     							=       np.array(
											    [np.ones(self.retrieval_vector_size			), -np.ones(self.retrieval_vector_size			)] ,  dtype=np.floataa			)
											snake_case_							,       snake_case_							,       snake_case_     							=       retriever.retrieve(snake_case ,  n_docs=snake_case			)
											self.assertEqual(retrieved_doc_embeds.shape ,  (2, n_docs, self.retrieval_vector_size)			)
											self.assertEqual(len(snake_case			) ,  2			)
											self.assertEqual(sorted(doc_dicts[0]			) ,  ['text', 'title']			)
											self.assertEqual(len(doc_dicts[0]['text']			) ,  snake_case			)
											self.assertEqual(doc_dicts[0]['text'][0] ,  'bar'			)  # max inner product is reached with second doc
											self.assertEqual(doc_dicts[1]['text'][0] ,  'foo'			)  # max inner product is reached with first doc
											self.assertListEqual(doc_ids.tolist() ,  [[1], [0]]			)




				def        a				(   self			):
											snake_case_     							=       self.get_dummy_legacy_index_retriever()
											with tempfile.TemporaryDirectory() as tmp_dirname:
																		retriever.save_pretrained(snake_case			)
																		snake_case_     							=       RagRetriever.from_pretrained(snake_case			)
																		self.assertIsInstance(snake_case ,  snake_case			)
																		snake_case_     							=       np.array(
																		    [np.ones(self.retrieval_vector_size			), -np.ones(self.retrieval_vector_size			)] ,  dtype=np.floataa			)
																		snake_case_     							=       retriever.retrieve(snake_case ,  n_docs=1			)
																		self.assertTrue(out is not None			)




				@require_torch
				@require_tokenizers
				@require_sentencepiece
				def        a				(   self			):
											import torch

											snake_case_     							=       1
											snake_case_     							=       self.get_dummy_canonical_hf_index_retriever()
											snake_case_     							=       [[5, 7], [10, 11]]
											snake_case_     							=       np.array(
											    [np.ones(self.retrieval_vector_size			), -np.ones(self.retrieval_vector_size			)] ,  dtype=np.floataa			)
											snake_case_     							=       retriever(snake_case ,  snake_case ,  prefix=retriever.config.generator.prefix ,  n_docs=snake_case			)
											snake_case_							,       snake_case_							,       snake_case_     							=       (
											    out['context_input_ids'],
											    out['context_attention_mask'],
											    out['retrieved_doc_embeds'],
											)
											self.assertEqual(retrieved_doc_embeds.shape ,  (2, n_docs, self.retrieval_vector_size)			)
											self.assertIsInstance(snake_case ,  snake_case			)
											self.assertIsInstance(snake_case ,  snake_case			)
											self.assertIsInstance(snake_case ,  np.ndarray			)

											snake_case_     							=       retriever(
											    snake_case ,  snake_case ,  prefix=retriever.config.generator.prefix ,  n_docs=snake_case ,  return_tensors='pt' ,  )
											snake_case_							,       snake_case_							,       snake_case_							,       snake_case_     							=       (  # noqa: F841
											    out['context_input_ids'],
											    out['context_attention_mask'],
											    out['retrieved_doc_embeds'],
											    out['doc_ids'],
											)
											self.assertEqual(retrieved_doc_embeds.shape ,  (2, n_docs, self.retrieval_vector_size)			)
											self.assertIsInstance(snake_case ,  torch.Tensor			)
											self.assertIsInstance(snake_case ,  torch.Tensor			)
											self.assertIsInstance(snake_case ,  torch.Tensor			)




				@require_torch
				@require_tokenizers
				@require_sentencepiece
				def        a				(   self			):
											snake_case_     							=       self.get_dpr_ctx_encoder_tokenizer()
											snake_case_     							=       1
											snake_case_     							=       self.get_dummy_custom_hf_index_retriever(from_disk=snake_case			)
											retriever.set_ctx_encoder_tokenizer(snake_case			)

											snake_case_     							=       [[5, 7], [10, 11]]
											snake_case_     							=       np.array(
											    [np.ones(self.retrieval_vector_size			), -np.ones(self.retrieval_vector_size			)] ,  dtype=np.floataa			)
											snake_case_     							=       retriever(snake_case ,  snake_case ,  prefix=retriever.config.generator.prefix ,  n_docs=snake_case			)

											self.assertEqual(
											    len(snake_case			) ,  6			)  # check whether the retriever output consist of 6 attributes including tokenized docs
											self.assertEqual(
											    all(k in out for k in ('tokenized_doc_ids', 'tokenized_doc_attention_mask')			) ,  snake_case			)  # check for doc token related keys in dictionary.







import json
import os
from typing import Dict, List, Optional, Tuple

import regex as re

from ...tokenization_utils import PreTrainedTokenizer
from ...utils import logging


_UpperCAmelCase						:  Tuple									=			logging.get_logger(__name__)


_UpperCAmelCase						:  Optional[int]									=			{
    """vocab_file""": """vocab.json""",
    """merges_file""": """merges.txt""",
    """tokenizer_config_file""": """tokenizer_config.json""",
}

_UpperCAmelCase						:  Union[str, Any]									=			{
    """vocab_file""": {
        """facebook/blenderbot_small-90M""": """https://huggingface.co/facebook/blenderbot_small-90M/resolve/main/vocab.json"""
    },
    """merges_file""": {
        """facebook/blenderbot_small-90M""": """https://huggingface.co/facebook/blenderbot_small-90M/resolve/main/merges.txt"""
    },
    """tokenizer_config_file""": {
        """facebook/blenderbot_small-90M""": (
            """https://huggingface.co/facebook/blenderbot_small-90M/resolve/main/tokenizer_config.json"""
        )
    },
}

_UpperCAmelCase						:  Union[str, Any]									=			{"""facebook/blenderbot_small-90M""": 512}





def    __lowerCamelCase      (					UpperCamelCase__ ):







							'''simple docstring'''






							snake_case_     							=       set()
							snake_case_     							=       word[0]
							for char in word[1:]:
														pairs.add((prev_char, char) )
														snake_case_     							=       char

							snake_case_     							=       set(UpperCamelCase__ )
							return pairs







class 					lowercase							(			lowercase_     ):
				__SCREAMING_SNAKE_CASE   :					Optional[Any]			     =     VOCAB_FILES_NAMES
				__SCREAMING_SNAKE_CASE   :					Any			     =     PRETRAINED_VOCAB_FILES_MAP
				__SCREAMING_SNAKE_CASE   :					str			     =     PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES
				__SCREAMING_SNAKE_CASE   :					Optional[int]			     =     ['''input_ids''', '''attention_mask''']




				def __init__(   self ,  snake_case ,  snake_case ,  snake_case="__start__" ,  snake_case="__end__" ,  snake_case="__unk__" ,  snake_case="__null__" ,  **snake_case ,  ):
											super().__init__(unk_token=snake_case ,  bos_token=snake_case ,  eos_token=snake_case ,  pad_token=snake_case ,  **snake_case			)

											with open(snake_case ,  encoding='utf-8'			) as vocab_handle:
																		snake_case_     							=       json.load(snake_case			)
											snake_case_     							=       {v: k for k, v in self.encoder.items()}
											with open(snake_case ,  encoding='utf-8'			) as merges_handle:
																		snake_case_     							=       merges_handle.read().split('\n'			)[1:-1]
											snake_case_     							=       [tuple(merge.split()			) for merge in merges]
											snake_case_     							=       dict(zip(snake_case ,  range(len(snake_case			)			)			)			)
											snake_case_     							=       {}




				@property
				def        a				(   self			):
											return len(self.encoder			)




				def        a				(   self			):
											return dict(self.encoder ,  **self.added_tokens_encoder			)




				def        a				(   self ,  snake_case			):
											if token in self.cache:
																		return self.cache[token]
											snake_case_     							=       re.sub('([.,!?()])' ,  R' \1' ,  snake_case			)
											snake_case_     							=       re.sub('(\')' ,  R' \1 ' ,  snake_case			)
											snake_case_     							=       re.sub(R'\s{2,}' ,  ' ' ,  snake_case			)
											if "\n" in token:
																		snake_case_     							=       token.replace('\n' ,  ' __newln__'			)

											snake_case_     							=       token.split(' '			)
											snake_case_     							=       []
											for token in tokens:
																		if not len(snake_case			):
																									continue

																		snake_case_     							=       token.lower()
																		snake_case_     							=       tuple(snake_case			)
																		snake_case_     							=       tuple(list(word[:-1]			) + [word[-1] + '</w>']			)
																		snake_case_     							=       get_pairs(snake_case			)

																		if not pairs:
																									words.append(snake_case			)
																									continue

																		while True:
																									snake_case_     							=       min(snake_case ,  key=lambda snake_case			: self.bpe_ranks.get(snake_case ,  float('inf'			)			)			)
																									if bigram not in self.bpe_ranks:
																																break
																									snake_case_							,       snake_case_     							=       bigram
																									snake_case_     							=       []
																									snake_case_     							=       0

																									while i < len(snake_case			):
																																try:
																																							snake_case_     							=       word.index(snake_case ,  snake_case			)
																																							new_word.extend(word[i:j]			)
																																							snake_case_     							=       j
																																except ValueError:
																																							new_word.extend(word[i:]			)
																																							break

																																if word[i] == first and i < len(snake_case			) - 1 and word[i + 1] == second:
																																							new_word.append(first + second			)
																																							i += 2
																																else:
																																							new_word.append(word[i]			)
																																							i += 1
																									snake_case_     							=       tuple(snake_case			)
																									snake_case_     							=       new_word
																									if len(snake_case			) == 1:
																																break
																									else:
																																snake_case_     							=       get_pairs(snake_case			)
																		snake_case_     							=       '@@ '.join(snake_case			)
																		snake_case_     							=       word[:-4]

																		snake_case_     							=       word
																		words.append(snake_case			)
											return " ".join(snake_case			)




				def        a				(   self ,  snake_case			):
											snake_case_     							=       []

											snake_case_     							=       re.findall(R'\S+\n?' ,  snake_case			)

											for token in words:
																		split_tokens.extend(list(self.bpe(snake_case			).split(' '			)			)			)
											return split_tokens




				def        a				(   self ,  snake_case			):
											snake_case_     							=       token.lower()
											return self.encoder.get(snake_case ,  self.encoder.get(self.unk_token			)			)




				def        a				(   self ,  snake_case			):
											return self.decoder.get(snake_case ,  self.unk_token			)




				def        a				(   self ,  snake_case			):
											snake_case_     							=       ' '.join(snake_case			).replace('@@ ' ,  ''			).strip()
											return out_string




				def        a				(   self ,  snake_case ,  snake_case = None			):
											if not os.path.isdir(snake_case			):
																		logger.error(F'''Vocabulary path ({save_directory}) should be a directory'''			)
																		return
											snake_case_     							=       os.path.join(
											    snake_case ,  (filename_prefix + '-' if filename_prefix else '') + VOCAB_FILES_NAMES['vocab_file']			)
											snake_case_     							=       os.path.join(
											    snake_case ,  (filename_prefix + '-' if filename_prefix else '') + VOCAB_FILES_NAMES['merges_file']			)

											with open(snake_case ,  'w' ,  encoding='utf-8'			) as f:
																		f.write(json.dumps(self.encoder ,  indent=2 ,  sort_keys=snake_case ,  ensure_ascii=snake_case			) + '\n'			)

											snake_case_     							=       0
											with open(snake_case ,  'w' ,  encoding='utf-8'			) as writer:
																		writer.write('#version: 0.2\n'			)
																		for bpe_tokens, token_index in sorted(self.bpe_ranks.items() ,  key=lambda snake_case			: kv[1]			):
																									if index != token_index:
																																logger.warning(
																																    F'''Saving vocabulary to {merge_file}: BPE merge indices are not consecutive.'''
																																    ' Please check that the tokenizer is not corrupted!'			)
																																snake_case_     							=       token_index
																									writer.write(' '.join(snake_case			) + '\n'			)
																									index += 1

											return vocab_file, merge_file




