


'''simple docstring'''






from __future__ import annotations

from collections import Counter
from random import random




class 		a__    :





							'''simple docstring'''






							def __init__(		self       )	->							str:
														lowerCAmelCase__	       =     {}







							def   __SCREAMING_SNAKE_CASE							(		self ,   lowerCamelCase_       )	->							None:
														lowerCAmelCase__	       =     {}







							def   __SCREAMING_SNAKE_CASE							(		self ,   lowerCamelCase_ ,   lowerCamelCase_ ,   lowerCamelCase_       )	->							None:
														if nodea not in self.connections:
																					self.add_node(lowerCamelCase_       )
														if nodea not in self.connections:
																					self.add_node(lowerCamelCase_       )
														lowerCAmelCase__	       =     probability







							def   __SCREAMING_SNAKE_CASE							(		self       )	->							list[str]:
														return list(self.connections       )







							def   __SCREAMING_SNAKE_CASE							(		self ,   lowerCamelCase_       )	->							str:
														lowerCAmelCase__	       =     0
														lowerCAmelCase__	       =     random()

														for dest in self.connections[node]:
																					current_probability += self.connections[node][dest]
																					if current_probability > random_value:
																												return dest
														return ""


def  _snake_case       (					A			,   A			,   A	)						->   dict[str, int]:
							lowerCAmelCase__	       =     MarkovChainGraphUndirectedUnweighted()

							for nodea, nodea, probability in transitions:
														graph.add_transition_probability(A			,   A			,   A	)

							lowerCAmelCase__	       =     Counter(graph.get_nodes()	)
							lowerCAmelCase__	       =     start

							for _ in range(A	):
														lowerCAmelCase__	       =     graph.transition(A	)
														visited[node] += 1

							return visited


if __name__ == "__main__":
		import doctest

		doctest.testmod()



'''simple docstring'''






import os
from typing import Optional

import fsspec
from fsspec.archive import AbstractArchiveFileSystem
from fsspec.utils import DEFAULT_BLOCK_SIZE




class 		a__    (							a__  ):





							'''simple docstring'''






							lowercase__      :       Dict     						=				""
							lowercase__      :       str     						=				(
							    None  # protocol passed in prefix to the url. ex: "gzip", for gzip://file.txt::http://foo.bar/file.txt.gz
							)
							lowercase__      :       str     						=				None  # compression type in fsspec. ex: "gzip"
							lowercase__      :       str     						=				None  # extension of the filename to strip. ex: "".gz" to get file.txt from file.txt.gz







							def __init__(		self ,   lowerCamelCase_ = "" ,   lowerCamelCase_ = None ,   lowerCamelCase_ = None ,   **lowerCamelCase_       )	->							Any:
														super().__init__(self ,   **lowerCamelCase_       )
														# always open as "rb" since fsspec can then use the TextIOWrapper to make it work for "r" mode
														lowerCAmelCase__	       =     fsspec.open(
														    lowerCamelCase_ ,   mode='''rb''' ,   protocol=lowerCamelCase_ ,   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__	       =     os.path.basename(self.file.path.split('''::'''       )[0]       )
														lowerCAmelCase__	       =     (
														    self.compressed_name[: self.compressed_name.rindex('''.'''       )]
														    if '''.''' in self.compressed_name
														    else self.compressed_name
														)
														lowerCAmelCase__	       =     None







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







							def   __SCREAMING_SNAKE_CASE							(		self       )	->							Optional[int]:
														if self.dir_cache is None:
																					lowerCAmelCase__	       =     {**self.file.fs.info(self.file.path       ), '''name''': self.uncompressed_name}
																					lowerCAmelCase__	       =     {f['''name''']: f}







							def   __SCREAMING_SNAKE_CASE							(		self ,   lowerCamelCase_       )	->							List[Any]:
														return self.file.open().read()







							def   __SCREAMING_SNAKE_CASE							(		self ,   lowerCamelCase_ ,   lowerCamelCase_ = "rb" ,   lowerCamelCase_=None ,   lowerCamelCase_=True ,   lowerCamelCase_=None ,   **lowerCamelCase_ ,   )	->							List[str]:
														lowerCAmelCase__	       =     self._strip_protocol(lowerCamelCase_       )
														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 		a__    (							a__  ):





							'''simple docstring'''






							lowercase__      :       Optional[Any]     						=				"bz2"
							lowercase__      :       str     						=				"bz2"
							lowercase__      :       Optional[int]     						=				".bz2"




class 		a__    (							a__  ):





							'''simple docstring'''






							lowercase__      :       Any     						=				"gzip"
							lowercase__      :       int     						=				"gzip"
							lowercase__      :       int     						=				".gz"




class 		a__    (							a__  ):





							'''simple docstring'''






							lowercase__      :       Tuple     						=				"lz4"
							lowercase__      :       Optional[Any]     						=				"lz4"
							lowercase__      :       int     						=				".lz4"




class 		a__    (							a__  ):





							'''simple docstring'''






							lowercase__      :       Optional[int]     						=				"xz"
							lowercase__      :       str     						=				"xz"
							lowercase__      :       List[Any]     						=				".xz"




class 		a__    (							a__  ):





							'''simple docstring'''






							lowercase__      :       Union[str, Any]     						=				"zstd"
							lowercase__      :       Union[str, Any]     						=				"zstd"
							lowercase__      :       Dict     						=				".zst"







							def __init__(		self ,   lowerCamelCase_ ,   lowerCamelCase_ = "rb" ,   lowerCamelCase_ = None ,   lowerCamelCase_ = None ,   lowerCamelCase_ = DEFAULT_BLOCK_SIZE ,   **lowerCamelCase_ ,   )	->							List[Any]:
														super().__init__(
														    fo=lowerCamelCase_ ,   mode=lowerCamelCase_ ,   target_protocol=lowerCamelCase_ ,   target_options=lowerCamelCase_ ,   block_size=lowerCamelCase_ ,   **lowerCamelCase_ ,   )
														# 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__	       =     self.file.__enter__




														class 		a__    :





																					'''simple docstring'''






																					def __init__(		self ,   lowerCamelCase_       )	->							List[str]:
																												lowerCAmelCase__	       =     file_







																					def __enter__(		self       )	->							Tuple:
																												self._file.__enter__()
																												return self







																					def __exit__(		self ,   *lowerCamelCase_ ,   **lowerCamelCase_       )	->							str:
																												self._file.__exit__(*lowerCamelCase_ ,   **lowerCamelCase_       )







																					def __iter__(		self       )	->							Any:
																												return iter(self._file       )







																					def   __SCREAMING_SNAKE_CASE							(		self       )	->							Union[str, Any]:
																												return next(self._file       )







																					def __getattr__(		self ,   lowerCamelCase_       )	->							str:
																												return getattr(self._file ,   lowerCamelCase_       )

														def fixed_enter(*lowerCamelCase_ ,   **lowerCamelCase_       ):
																					return WrappedFile(_enter(*lowerCamelCase_ ,   **lowerCamelCase_       )       )

														lowerCAmelCase__	       =     fixed_enter