






from typing import Any





def  _lowerCamelCase					(   a_				: list						,			a_				: list						,			a_				: dict						,			a_				: dict						,			a_				: dict						,			):
			_validation(
			    a_						,			a_						,			a_						,			a_						,			a_						,			)
			# Creates data structures and fill initial step
			lowerCamelCase						:dict						  =     {}
			lowerCamelCase						:dict						  =     {}
			for state in states_space:
						lowerCamelCase						:Dict						  =     observations_space[0]
						lowerCamelCase						:Optional[int]						  =     (
						    initial_probabilities[state] * emission_probabilities[state][observation]
						)
						lowerCamelCase						:str						  =     None

			# Fills the data structure with the probabilities of
			# different transitions and pointers to previous states
			for o in range(1						,			len(a_)):
						lowerCamelCase						:Dict						  =     observations_space[o]
						lowerCamelCase						:Tuple						  =     observations_space[o - 1]
						for state in states_space:
									# Calculates the argmax for probability function
									lowerCamelCase						:Union[str, Any]						  =     ''''''
									lowerCamelCase						:List[str]						  =     -1
									for k_state in states_space:
												lowerCamelCase						:List[Any]						  =     (
												    probabilities[(k_state, prior_observation)]
												    * transition_probabilities[k_state][state]
												    * emission_probabilities[state][observation]
												)
												if probability > max_probability:
															lowerCamelCase						:Optional[Any]						  =     probability
															lowerCamelCase						:Optional[int]						  =     k_state

            # Update probabilities and pointers dicts
									lowerCamelCase						:str						  =     (
									    probabilities[(arg_max, prior_observation)]
									    * transition_probabilities[arg_max][state]
									    * emission_probabilities[state][observation]
									)

									lowerCamelCase						:int						  =     arg_max

    # The final observation
			lowerCamelCase						:str						  =     observations_space[len(a_) - 1]

			# argmax for given final observation
			lowerCamelCase						:str						  =     ''''''
			lowerCamelCase						:Optional[Any]						  =     -1
			for k_state in states_space:
						lowerCamelCase						:Union[str, Any]						  =     probabilities[(k_state, final_observation)]
						if probability > max_probability:
									lowerCamelCase						:str						  =     probability
									lowerCamelCase						:List[Any]						  =     k_state
			lowerCamelCase						:Optional[Any]						  =     arg_max

			# Process pointers backwards
			lowerCamelCase						:List[str]						  =     last_state
			lowerCamelCase						:Any						  =     []
			for o in range(len(a_) - 1						,			-1						,			-1):
						result.append(a_)
						lowerCamelCase						:List[Any]						  =     pointers[previous, observations_space[o]]
			result.reverse()

			return result





def  _lowerCamelCase					(   a_				: Any						,			a_				: Any						,			a_				: Any						,			a_				: Any						,			a_				: Any						,			):
			_validate_not_empty(
			    a_						,			a_						,			a_						,			a_						,			a_						,			)
			_validate_lists(a_						,			a_)
			_validate_dicts(
			    a_						,			a_						,			a_)





def  _lowerCamelCase					(   a_				: Any						,			a_				: Any						,			a_				: Any						,			a_				: Any						,			a_				: Any						,			):
			if not all(
			    [
			        observations_space,
			        states_space,
			        initial_probabilities,
			        transition_probabilities,
			        emission_probabilities,
			    ]):
						raise ValueError('''There\'s an empty parameter''')





def  _lowerCamelCase					(   a_				: Any						,			a_				: Any):
			_validate_list(a_						,			'''observations_space''')
			_validate_list(a_						,			'''states_space''')





def  _lowerCamelCase					(   a_				: Any						,			a_				: str):
			if not isinstance(_object						,			a_):
						lowerCamelCase						:Dict						  =     F"{var_name} must be a list"
						raise ValueError(a_)
			else:
						for x in _object:
									if not isinstance(a_						,			a_):
												lowerCamelCase						:List[str]						  =     F"{var_name} must be a list of strings"
												raise ValueError(a_)





def  _lowerCamelCase					(   a_				: Any						,			a_				: Any						,			a_				: Any						,			):
			_validate_dict(a_						,			'''initial_probabilities'''						,			a_)
			_validate_nested_dict(a_						,			'''transition_probabilities''')
			_validate_nested_dict(a_						,			'''emission_probabilities''')





def  _lowerCamelCase					(   a_				: Any						,			a_				: str):
			_validate_dict(_object						,			a_						,			a_)
			for x in _object.values():
						_validate_dict(a_						,			a_						,			a_						,			a_)





def  _lowerCamelCase					(   a_				: Any						,			a_				: str						,			a_				: type						,			a_				: bool = False):
			if not isinstance(_object						,			a_):
						lowerCamelCase						:str						  =     F"{var_name} must be a dict"
						raise ValueError(a_)
			if not all(isinstance(a_						,			a_) for x in _object):
						lowerCamelCase						:Tuple						  =     F"{var_name} all keys must be strings"
						raise ValueError(a_)
			if not all(isinstance(a_						,			a_) for x in _object.values()):
						lowerCamelCase						:Dict						  =     '''nested dictionary ''' if nested else ''''''
						lowerCamelCase						:Optional[int]						  =     F"{var_name} {nested_text}all values must be {value_type.__name__}"
						raise ValueError(a_)


if __name__ == "__main__":
			from doctest import testmod

			testmod()




import os
from typing import Optional

import fsspec
from fsspec.archive import AbstractArchiveFileSystem
from fsspec.utils import DEFAULT_BLOCK_SIZE
class   _lowerCAmelCase		(     __SCREAMING_SNAKE_CASE				):
							_UpperCAmelCase						    =     ''
							_UpperCAmelCase						    =     (
							    None  # protocol passed in prefix to the url. ex: "gzip", for gzip://file.txt::http://foo.bar/file.txt.gz
							)
							_UpperCAmelCase						    =     None  # compression type in fsspec. ex: "gzip"
							_UpperCAmelCase						    =     None  # extension of the filename to strip. ex: "".gz" to get file.txt from file.txt.gz







							def __init__(				self     :    str	,					__snake_case     :    str = ""	,					__snake_case     :    Optional[str] = None	,					__snake_case     :    Optional[dict] = None	,					**__snake_case     :    Dict		):
										super().__init__(self	,					**__snake_case		)
										# always open as "rb" since fsspec can then use the TextIOWrapper to make it work for "r" mode
										lowerCamelCase						:Optional[Any]						  =     fsspec.open(
										    __snake_case	,					mode='''rb'''	,					protocol=__snake_case	,					compression=self.compression	,					client_kwargs={
										        '''requote_redirect_url''': False,  # see https://github.com/huggingface/datasets/pull/5459
										        '''trust_env''': True,  # Enable reading proxy env variables.
										        **(target_options or {}).pop('''client_kwargs'''	,					{}		),  # To avoid issues if it was already passed.
										    }	,					**(target_options or {})	,					)
										lowerCamelCase						:List[str]						  =     os.path.basename(self.file.path.split('''::'''		)[0]		)
										lowerCamelCase						:Dict						  =     (
										    self.compressed_name[: self.compressed_name.rindex('''.'''		)]
										    if '''.''' in self.compressed_name
										    else self.compressed_name
										)
										lowerCamelCase						:List[str]						  =     None







							@classmethod
							def 				snake_case  (				cls     :    Any	,					__snake_case     :    Any		):
										# compressed file paths are always relative to the archive root
										return super()._strip_protocol(__snake_case		).lstrip('''/'''		)







							def 				snake_case  (				self     :    Any		):
										if self.dir_cache is None:
													lowerCamelCase						:Optional[Any]						  =     {**self.file.fs.info(self.file.path		), '''name''': self.uncompressed_name}
													lowerCamelCase						:Optional[Any]						  =     {f['''name''']: f}







							def 				snake_case  (				self     :    Union[str, Any]	,					__snake_case     :    str		):
										return self.file.open().read()







							def 				snake_case  (				self     :    Optional[int]	,					__snake_case     :    str	,					__snake_case     :    str = "rb"	,					__snake_case     :    int=None	,					__snake_case     :    Optional[int]=True	,					__snake_case     :    str=None	,					**__snake_case     :    str	,					):
										lowerCamelCase						:List[str]						  =     self._strip_protocol(__snake_case		)
										if mode != "rb":
													raise ValueError(F"Tried to read with mode {mode} on file {self.file.path} opened with mode 'rb'"		)
										return self.file.open()


class   _lowerCAmelCase		(     __SCREAMING_SNAKE_CASE				):
							_UpperCAmelCase						    =     'bz2'
							_UpperCAmelCase						    =     'bz2'
							_UpperCAmelCase						    =     '.bz2'


class   _lowerCAmelCase		(     __SCREAMING_SNAKE_CASE				):
							_UpperCAmelCase						    =     'gzip'
							_UpperCAmelCase						    =     'gzip'
							_UpperCAmelCase						    =     '.gz'


class   _lowerCAmelCase		(     __SCREAMING_SNAKE_CASE				):
							_UpperCAmelCase						    =     'lz4'
							_UpperCAmelCase						    =     'lz4'
							_UpperCAmelCase						    =     '.lz4'


class   _lowerCAmelCase		(     __SCREAMING_SNAKE_CASE				):
							_UpperCAmelCase						    =     'xz'
							_UpperCAmelCase						    =     'xz'
							_UpperCAmelCase						    =     '.xz'


class   _lowerCAmelCase		(     __SCREAMING_SNAKE_CASE				):
							_UpperCAmelCase						    =     'zstd'
							_UpperCAmelCase						    =     'zstd'
							_UpperCAmelCase						    =     '.zst'







							def __init__(				self     :    str	,					__snake_case     :    str	,					__snake_case     :    str = "rb"	,					__snake_case     :    Optional[str] = None	,					__snake_case     :    Optional[dict] = None	,					__snake_case     :    int = DEFAULT_BLOCK_SIZE	,					**__snake_case     :    int	,					):
										super().__init__(
										    fo=__snake_case	,					mode=__snake_case	,					target_protocol=__snake_case	,					target_options=__snake_case	,					block_size=__snake_case	,					**__snake_case	,					)
										# We need to wrap the zstd decompressor to avoid this error in fsspec==2021.7.0 and zstandard==0.15.2:
										#
										# File "/Users/user/.virtualenvs/hf-datasets/lib/python3.7/site-packages/fsspec/core.py", line 145, in open
										#     out.close = close
										# AttributeError: 'zstd.ZstdDecompressionReader' object attribute 'close' is read-only
										#
										# see https://github.com/intake/filesystem_spec/issues/725
										lowerCamelCase						:Tuple						  =     self.file.__enter__
										class   _lowerCAmelCase		:







																	def __init__(				self     :    Dict	,					__snake_case     :    Tuple		):
																				lowerCamelCase						:Optional[int]						  =     file_







																	def __enter__(				self     :    Optional[int]		):
																				self._file.__enter__()
																				return self







																	def __exit__(				self     :    str	,					*__snake_case     :    Optional[Any]	,					**__snake_case     :    List[Any]		):
																				self._file.__exit__(*__snake_case	,					**__snake_case		)







																	def __iter__(				self     :    Optional[Any]		):
																				return iter(self._file		)







																	def 				snake_case  (				self     :    List[Any]		):
																				return next(self._file		)







																	def __getattr__(				self     :    Any	,					__snake_case     :    str		):
																				return getattr(self._file	,					__snake_case		)

										def fixed_enter(*__snake_case     :    Optional[int]	,					**__snake_case     :    str		):
													return WrappedFile(_enter(*__snake_case	,					**__snake_case		)		)

										lowerCamelCase						:Dict						  =     fixed_enter



