





"""simple docstring"""




import random
import sys

UpperCamelCase_           ="""ABCDEFGHIJKLMNOPQRSTUVWXYZ"""





def        a_				(							):
						_UpperCamelCase			:					List[str]     =    input('''Enter message: '''   )
						_UpperCamelCase			:					str     =    '''LFWOAYUISVKMNXPBDCRJTQEGHZ'''
						_UpperCamelCase			:					Dict     =    input('''Encrypt/Decrypt [e/d]: '''   )

						check_valid_key(_lowercase   )

						if resp.lower().startswith('''e'''   ):
												_UpperCamelCase			:					Optional[int]     =    '''encrypt'''
												_UpperCamelCase			:					List[str]     =    encrypt_message(_lowercase       ,						_lowercase   )
						elif resp.lower().startswith('''d'''   ):
												_UpperCamelCase			:					Optional[int]     =    '''decrypt'''
												_UpperCamelCase			:					Dict     =    decrypt_message(_lowercase       ,						_lowercase   )

						print(F"""\n{mode.title()}ion: \n{translated}"""   )





def        a_				(							_lowercase   ):
						_UpperCamelCase			:					Dict     =    list(_lowercase   )
						_UpperCamelCase			:					Dict     =    list(_lowercase   )
						key_list.sort()
						letters_list.sort()

						if key_list != letters_list:
												sys.exit('''Error in the key or symbol set.'''   )





def        a_				(							_lowercase       ,						_lowercase   ):
						return translate_message(_lowercase       ,						_lowercase       ,						'''encrypt'''   )





def        a_				(							_lowercase       ,						_lowercase   ):
						return translate_message(_lowercase       ,						_lowercase       ,						'''decrypt'''   )





def        a_				(							_lowercase       ,						_lowercase       ,						_lowercase   ):
						_UpperCamelCase			:					Any     =    ''''''
						_UpperCamelCase			:					Dict     =    LETTERS
						_UpperCamelCase			:					Dict     =    key

						if mode == "decrypt":
												_UpperCamelCase   ,							_UpperCamelCase			:					Union[str, Any]     =    chars_b, chars_a

						for symbol in message:
												if symbol.upper() in chars_a:
																		_UpperCamelCase			:					Optional[Any]     =    chars_a.find(symbol.upper()   )
																		if symbol.isupper():
																								translated += chars_b[sym_index].upper()
																		else:
																								translated += chars_b[sym_index].lower()
												else:
																		translated += symbol

						return translated





def        a_				(							):
						_UpperCamelCase			:					List[Any]     =    list(_lowercase   )
						random.shuffle(_lowercase   )
						return "".join(_lowercase   )


if __name__ == "__main__":
						main()









def 					snake_case					(							A			)							->							int:




	'''simple docstring'''


	if not isinstance(A						,   A			):
		raise ValueError('double_factorial() only accepts integral values'			)
	if n < 0:
		raise ValueError('double_factorial() not defined for negative values'			)
	return 1 if n <= 1 else n * double_factorial(n - 2			)


if __name__ == "__main__":
							import doctest

							doctest.testmod()
