"""simple docstring"""
def    lowerCAmelCase__    (			_UpperCamelCase       :				str					)					->				str:





						"""simple docstring"""






						snake_case								=			''
						for ch in key:
												if ch == " " or ch not in key_no_dups and ch.isalpha():
																		key_no_dups += ch
						return key_no_dups





def    lowerCAmelCase__    (			_UpperCamelCase       :				str					)					->				dict[str, str]:





						"""simple docstring"""






						snake_case								=			[chr(i + 6_5					) for i in range(2_6					)]
						# Remove duplicate characters from key
						snake_case								=			remove_duplicates(key.upper()					)
						snake_case								=			len(_UpperCamelCase					)
						# First fill cipher with key characters
						snake_case								=			{alphabet[i]: char for i, char in enumerate(_UpperCamelCase					)}
						# Then map remaining characters in alphabet to
						# the alphabet from the beginning
						for i in range(len(_UpperCamelCase					) ,			2_6					):
												snake_case								=			alphabet[i - offset]
												# Ensure we are not mapping letters to letters previously mapped
												while char in key:
																		offset -= 1
																		snake_case								=			alphabet[i - offset]
												snake_case								=			char
						return cipher_alphabet





def    lowerCAmelCase__    (			_UpperCamelCase       :				str ,			_UpperCamelCase       :				dict[str, str]					)					->				str:





						"""simple docstring"""






						return "".join(cipher_map.get(_UpperCamelCase ,			_UpperCamelCase					) for ch in message.upper()					)





def    lowerCAmelCase__    (			_UpperCamelCase       :				str ,			_UpperCamelCase       :				dict[str, str]					)					->				str:





						"""simple docstring"""






						snake_case								=			{v: k for k, v in cipher_map.items()}
						return "".join(rev_cipher_map.get(_UpperCamelCase ,			_UpperCamelCase					) for ch in message.upper()					)





def    lowerCAmelCase__    (			)					->				None:





						"""simple docstring"""






						snake_case								=			input('Enter message to encode or decode: '					).strip()
						snake_case								=			input('Enter keyword: '					).strip()
						snake_case								=			input('Encipher or decipher? E/D:'					).strip()[0].lower()
						try:
												snake_case								=			{'e': encipher, 'd': decipher}[option]
						except KeyError:
												raise KeyError('invalid input option'					)
						snake_case								=			create_cipher_map(_UpperCamelCase					)
						print(func(_UpperCamelCase ,			_UpperCamelCase					)					)


if __name__ == "__main__":
					import doctest

					doctest.testmod()
					main()



"""simple docstring"""
from abc import ABC, abstractmethod
from typing import Optional, Union

from .. import Dataset, DatasetDict, Features, IterableDataset, IterableDatasetDict, NamedSplit
from ..utils.typing import NestedDataStructureLike, PathLike



class   lowerCAmelCase_    (			lowerCAmelCase					):



				"""simple docstring"""

				def __init__(				self		,    lowerCAmelCase = None		,    lowerCAmelCase = None		,    lowerCAmelCase = None		,    lowerCAmelCase = None		,    lowerCAmelCase = False		,    lowerCAmelCase = False		,    lowerCAmelCase = None		,    **lowerCAmelCase		,    ):






										"""simple docstring"""

										snake_case								=			path_or_paths
										snake_case								=			split if split or isinstance(lowerCAmelCase		,    lowerCAmelCase    ) else 'train'
										snake_case								=			features
										snake_case								=			cache_dir
										snake_case								=			keep_in_memory
										snake_case								=			streaming
										snake_case								=			num_proc
										snake_case								=			kwargs

				@abstractmethod
				def 		snake_case (				self    ):






										"""simple docstring"""

										pass





class   lowerCAmelCase_    (			lowerCAmelCase					):



				"""simple docstring"""

				def __init__(				self		,    lowerCAmelCase = None		,    lowerCAmelCase = None		,    lowerCAmelCase = False		,    lowerCAmelCase = False		,    lowerCAmelCase = None		,    **lowerCAmelCase		,    ):






										"""simple docstring"""

										snake_case								=			features
										snake_case								=			cache_dir
										snake_case								=			keep_in_memory
										snake_case								=			streaming
										snake_case								=			num_proc
										snake_case								=			kwargs

				@abstractmethod
				def 		snake_case (				self    ):






										"""simple docstring"""

										pass


