

'''simple docstring'''







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

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


_lowerCamelCase    =  logging.get_logger(__name__)

_lowerCamelCase    =  {
    'vocab_file': 'vocab.json',
    'merges_file': 'merges.txt',
}

_lowerCamelCase    =  {
    'vocab_file': {
        'microsoft/biogpt': 'https://huggingface.co/microsoft/biogpt/resolve/main/vocab.json',
    },
    'merges_file': {'microsoft/biogpt': 'https://huggingface.co/microsoft/biogpt/resolve/main/merges.txt'},
}

_lowerCamelCase    =  {
    'microsoft/biogpt': 1_0_2_4,
}






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





class 					__a   (		_snake_case  ):
						__SCREAMING_SNAKE_CASE     :					List[Any]  =      VOCAB_FILES_NAMES
						__SCREAMING_SNAKE_CASE     :					Any  =      PRETRAINED_VOCAB_FILES_MAP
						__SCREAMING_SNAKE_CASE     :					int  =      PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES
						__SCREAMING_SNAKE_CASE     :					Dict  =      ['input_ids', 'attention_mask']

						def __init__(		self	:						Tuple    ,			lowercase__	:						int    ,			lowercase__	:						Tuple    ,			lowercase__	:						List[Any]="<unk>"    ,			lowercase__	:						Dict="<s>"    ,			lowercase__	:						Optional[int]="</s>"    ,			lowercase__	:						Tuple="</s>"    ,			lowercase__	:						List[str]="<pad>"    ,			**lowercase__	:						Tuple    ,			)						->Optional[Any]:

							"""simple docstring"""



							super().__init__(
							    bos_token=lowercase__    ,			eos_token=lowercase__    ,			sep_token=lowercase__    ,			unk_token=lowercase__    ,			pad_token=lowercase__    ,			**lowercase__    ,			)

							try:
								import sacremoses
							except ImportError:
								raise ImportError(
								    """You need to install sacremoses to use BioGptTokenizer. """
								    """See https://pypi.org/project/sacremoses/ for installation.""")

							_lowercase							=     """en"""
							_lowercase							=     sacremoses
							# cache of sm.MosesTokenizer instance
							_lowercase							=     {}
							_lowercase							=     {}
							with open(lowercase__    ,			encoding="""utf-8""") as vocab_handle:
								_lowercase							=     json.load(lowercase__)
							_lowercase							=     {v: k for k, v in self.encoder.items()}
							with open(lowercase__    ,			encoding="""utf-8""") as merges_handle:
								_lowercase							=     merges_handle.read().split("""\n""")[:-1]
							_lowercase							=     [tuple(merge.split()[:2]) for merge in merges]
							_lowercase							=     dict(zip(lowercase__    ,			range(len(lowercase__))))
							_lowercase							=     {}

						@property
						def 	_UpperCAmelCase							(		self	:						Tuple)						->List[Any]:

							"""simple docstring"""



							return len(self.encoder)

						def 	_UpperCAmelCase							(		self	:						Union[str, Any])						->Optional[int]:

							"""simple docstring"""



							return dict(self.encoder    ,			**self.added_tokens_encoder)

						def 	_UpperCAmelCase							(		self	:						Optional[int]    ,			lowercase__	:						Tuple    ,			lowercase__	:						Dict)						->List[str]:

							"""simple docstring"""



							if lang not in self.cache_moses_tokenizer:
								_lowercase							=     self.sm.MosesTokenizer(lang=lowercase__)
								_lowercase							=     moses_tokenizer
							return self.cache_moses_tokenizer[lang].tokenize(
							    lowercase__    ,			aggressive_dash_splits=lowercase__    ,			return_str=lowercase__    ,			escape=lowercase__)

						def 	_UpperCAmelCase							(		self	:						Dict    ,			lowercase__	:						Tuple    ,			lowercase__	:						Optional[Any])						->Dict:

							"""simple docstring"""



							if lang not in self.cache_moses_detokenizer:
								_lowercase							=     self.sm.MosesDetokenizer(lang=lowercase__)
								_lowercase							=     moses_detokenizer
							return self.cache_moses_detokenizer[lang].detokenize(lowercase__)

						def 	_UpperCAmelCase							(		self	:						int    ,			lowercase__	:						str)						->List[Any]:

							"""simple docstring"""



							_lowercase							=     tuple(token[:-1]) + (token[-1] + """</w>""",)
							if token in self.cache:
								return self.cache[token]
							_lowercase							=     get_pairs(lowercase__)

							if not pairs:
								return token + "</w>"

							while True:
								_lowercase							=     min(lowercase__    ,			key=lambda lowercase__: self.bpe_ranks.get(lowercase__    ,			float("""inf""")))
								if bigram not in self.bpe_ranks:
									break
								_lowercase		,		_lowercase							=     bigram
								_lowercase							=     []
								_lowercase							=     0
								while i < len(lowercase__):
									try:
										_lowercase							=     word.index(lowercase__    ,			lowercase__)
									except ValueError:
										new_word.extend(word[i:])
										break
									else:
										new_word.extend(word[i:j])
										_lowercase							=     j

									if word[i] == first and i < len(lowercase__) - 1 and word[i + 1] == second:
										new_word.append(first + second)
										i += 2
									else:
										new_word.append(word[i])
										i += 1
								_lowercase							=     tuple(lowercase__)
								_lowercase							=     new_word
								if len(lowercase__) == 1:
									break
								else:
									_lowercase							=     get_pairs(lowercase__)
							_lowercase							=     """ """.join(lowercase__)
							if word == "\n  </w>":
								_lowercase							=     """\n</w>"""
							_lowercase							=     word
							return word

						def 	_UpperCAmelCase							(		self	:						Optional[int]    ,			lowercase__	:						List[str]    ,			lowercase__	:						Tuple=False)						->Optional[int]:

							"""simple docstring"""



							if bypass_tokenizer:
								_lowercase							=     text.split()
							else:
								_lowercase							=     self.moses_tokenize(lowercase__    ,			self.lang)

							_lowercase							=     []
							for token in text:
								if token:
									split_tokens.extend(list(self.bpe(lowercase__).split(""" """)))

							return split_tokens

						def 	_UpperCAmelCase							(		self	:						Optional[int]    ,			lowercase__	:						Union[str, Any])						->Dict:

							"""simple docstring"""



							return self.encoder.get(lowercase__    ,			self.encoder.get(self.unk_token))

						def 	_UpperCAmelCase							(		self	:						Optional[Any]    ,			lowercase__	:						Tuple)						->List[str]:

							"""simple docstring"""



							return self.decoder.get(lowercase__    ,			self.unk_token)

						def 	_UpperCAmelCase							(		self	:						List[str]    ,			lowercase__	:						List[str])						->Tuple:

							"""simple docstring"""



							_lowercase							=     [t.replace(""" """    ,			"""""").replace("""</w>"""    ,			""" """) for t in tokens]
							_lowercase							=     """""".join(lowercase__).split()
							# detokenize
							_lowercase							=     self.moses_detokenize(lowercase__    ,			self.lang)
							return text

						def 	_UpperCAmelCase							(		self	:						Tuple    ,			lowercase__	:						List[int]    ,			lowercase__	:						Optional[List[int]] = None)						->List[int]:

							"""simple docstring"""



							if token_ids_a is None:
								return [self.sep_token_id] + token_ids_a
							_lowercase							=     [self.sep_token_id]
							return sep + token_ids_a + sep + token_ids_a

						def 	_UpperCAmelCase							(		self	:						int    ,			lowercase__	:						List[int]    ,			lowercase__	:						Optional[List[int]] = None    ,			lowercase__	:						bool = False)						->List[int]:

							"""simple docstring"""



							if already_has_special_tokens:
								return super().get_special_tokens_mask(
								    token_ids_a=lowercase__    ,			token_ids_a=lowercase__    ,			already_has_special_tokens=lowercase__)
							# no bos used in fairseq
							if token_ids_a is not None:
								return [1] + ([0] * len(lowercase__)) + [1] + ([0] * len(lowercase__))
							return [1] + ([0] * len(lowercase__))

						def 	_UpperCAmelCase							(		self	:						Optional[Any]    ,			lowercase__	:						List[int]    ,			lowercase__	:						Optional[List[int]] = None)						->List[int]:

							"""simple docstring"""



							_lowercase							=     [self.sep_token_id]

							# no bos used in fairseq
							if token_ids_a is None:
								return len(token_ids_a + sep) * [0]
							return len(token_ids_a + sep) * [0] + len(token_ids_a + sep) * [1]

						def 	_UpperCAmelCase							(		self	:						Any    ,			lowercase__	:						str    ,			lowercase__	:						Optional[str] = None)						->Tuple[str]:

							"""simple docstring"""



							if not os.path.isdir(lowercase__):
								logger.error(f"""Vocabulary path ({save_directory}) should be a directory""")
								return
							_lowercase							=     os.path.join(
							    lowercase__    ,			(filename_prefix + """-""" if filename_prefix else """""") + VOCAB_FILES_NAMES["""vocab_file"""])
							_lowercase							=     os.path.join(
							    lowercase__    ,			(filename_prefix + """-""" if filename_prefix else """""") + VOCAB_FILES_NAMES["""merges_file"""])

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

							_lowercase							=     0
							with open(lowercase__    ,			"""w"""    ,			encoding="""utf-8""") as writer:
								for bpe_tokens, token_index in sorted(self.bpe_ranks.items()    ,			key=lambda lowercase__: 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!""")
										_lowercase							=     token_index
									writer.write(""" """.join(lowercase__) + """\n""")
									index += 1

							return vocab_file, merge_file

						def __getstate__(		self	:						Optional[int])						->Any:

							"""simple docstring"""



							_lowercase							=     self.__dict__.copy()
							_lowercase							=     None
							return state


						def __setstate__(		self	:						str    ,			lowercase__	:						Optional[Any])						->Optional[int]:

							"""simple docstring"""



							_lowercase							=     d

							try:
								import sacremoses
							except ImportError:
								raise ImportError(
								    """You need to install sacremoses to use XLMTokenizer. """
								    """See https://pypi.org/project/sacremoses/ for installation.""")

							_lowercase							=     sacremoses







'''simple docstring'''







from __future__ import annotations

from collections.abc import Generator






def 					_SCREAMING_SNAKE_CASE		(						snake_case_	):
	if not isinstance(snake_case_							,       snake_case_	) or n < 1:
		raise Exception("""Sequence only defined for positive integers"""	)

	yield n
	while n != 1:
		if n % 2 == 0:
			n //= 2
		else:
			_lowercase							=     3 * n + 1
		yield n






def 					_SCREAMING_SNAKE_CASE		(						):
	_lowercase							=     43
	_lowercase							=     tuple(collatz_sequence(snake_case_	)	)
	print(snake_case_	)
	print(F"""Collatz sequence from {n} took {len(snake_case_	)} steps."""	)


if __name__ == "__main__":
							main()




