code: from typing import Literal
  
  lowerCamelCase__           =				'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
  
  
  
  def 							_lowerCamelCase(				__snake_case						,						__snake_case						,						__snake_case	)  ->   str:
  		__snake_case		       =     LETTERS if mode == "decrypt" else key
  		__snake_case		       =     key if mode == "decrypt" else LETTERS
  		__snake_case		       =     ""
  		# loop through each symbol in the message
  		for symbol in message:
  				if symbol.upper() in chars_a:
  						# encrypt/decrypt the symbol
  						__snake_case		       =     chars_a.find(symbol.upper()	)
  						if symbol.isupper():
  								translated += chars_b[sym_index].upper()
  						else:
  								translated += chars_b[sym_index].lower()
  				else:
  						# symbol is not in LETTERS, just add it
  						translated += symbol
  		return translated
  
  
  
  def 							_lowerCamelCase(				__snake_case						,						__snake_case	)  ->   str:
  		return translate_message(__snake_case						,						__snake_case						,						"encrypt"	)
  
  
  
  def 							_lowerCamelCase(				__snake_case						,						__snake_case	)  ->   str:
  		return translate_message(__snake_case						,						__snake_case						,						"decrypt"	)
  
  
  
  def 							_lowerCamelCase(				)  ->   None:
  		__snake_case		       =     "Hello World"
  		__snake_case		       =     "QWERTYUIOPASDFGHJKLZXCVBNM"
  		__snake_case		       =     "decrypt"  # set to 'encrypt' or 'decrypt'
  
  		if mode == "encrypt":
  				__snake_case		       =     encrypt_message(__snake_case						,						__snake_case	)
  		elif mode == "decrypt":
  				__snake_case		       =     decrypt_message(__snake_case						,						__snake_case	)
  		print(f"""Using the key {key}, the {mode}ed message is: {translated}"""	)
  
  
  if __name__ == "__main__":
  		import doctest
  
  		doctest.testmod()
  		main()
  
  
  
  
  
  
style_context: import os
  from string import ascii_letters
  
  lowerCamelCase__           =				ascii_letters + ' \t\n'
  
  
  
  def 							_lowerCamelCase(				)  ->   dict[str, None]:
  		__snake_case		       =     os.path.split(os.path.realpath(__snake_case	)	)
  		__snake_case		       =     {}
  		with open(path[0] + "/dictionary.txt"	) as dictionary_file:
  				for word in dictionary_file.read().split("\n"	):
  						__snake_case		       =     None
  		return english_words
  
  
  lowerCamelCase__           =				load_dictionary()
  
  
  
  def 							_lowerCamelCase(				__snake_case	)  ->   float:
  		__snake_case		       =     message.upper()
  		__snake_case		       =     remove_non_letters(__snake_case	)
  		__snake_case		       =     message.split()
  		__snake_case		       =     len([word for word in possible_words if word in ENGLISH_WORDS]	)
  		return float(__snake_case	) / len(__snake_case	)
  
  
  
  def 							_lowerCamelCase(				__snake_case	)  ->   str:
  		return "".join(symbol for symbol in message if symbol in LETTERS_AND_SPACE	)
  
  
  
  def 							_lowerCamelCase(				__snake_case						,						__snake_case = 20						,						__snake_case = 85	)  ->   bool:
  		__snake_case		       =     get_english_count(__snake_case	) * 100 >= word_percentage
  		__snake_case		       =     len(remove_non_letters(__snake_case	)	)
  		__snake_case		       =     (float(__snake_case	) / len(__snake_case	)) * 100
  		__snake_case		       =     message_letters_percentage >= letter_percentage
  		return words_match and letters_match
  
  
  if __name__ == "__main__":
  		import doctest
  
  		doctest.testmod()
  
  
  
  
  
  