code: 
  
  
  
  
  
  
  import random
  import sys
  
  SCREAMING_SNAKE_CASE__		:       int												=							"""ABCDEFGHIJKLMNOPQRSTUVWXYZ"""
  
  
  
  
  
  def    _lowerCamelCase	(	)   -> None:
  
       '''simple docstring'''
       UpperCAmelCase__			:     Optional[Any]										= input("""Enter message: """					)
       UpperCAmelCase__			:     Union[str, Any]										= """LFWOAYUISVKMNXPBDCRJTQEGHZ"""
       UpperCAmelCase__			:     Any										= input("""Encrypt/Decrypt [e/d]: """					)
  
       check_valid_key(__lowerCamelCase					)
  
       if resp.lower().startswith("""e"""					):
            UpperCAmelCase__			:     Union[str, Any]										= """encrypt"""
            UpperCAmelCase__			:     Union[str, Any]										= encrypt_message(__lowerCamelCase   ,       __lowerCamelCase					)
       elif resp.lower().startswith("""d"""					):
            UpperCAmelCase__			:     Optional[int]										= """decrypt"""
            UpperCAmelCase__			:     Optional[int]										= decrypt_message(__lowerCamelCase   ,       __lowerCamelCase					)
  
       print(F"\n{mode.title()}ion: \n{translated}"					)
  
  
  
  
  
  def    _lowerCamelCase	(	__lowerCamelCase					)   -> None:
  
       '''simple docstring'''
       UpperCAmelCase__			:     List[str]										= list(__lowerCamelCase					)
       UpperCAmelCase__			:     Optional[Any]										= list(__lowerCamelCase					)
       key_list.sort()
       letters_list.sort()
  
       if key_list != letters_list:
            sys.exit("""Error in the key or symbol set."""					)
  
  
  
  
  
  def    _lowerCamelCase	(	__lowerCamelCase   ,       __lowerCamelCase					)   -> str:
  
       '''simple docstring'''
       return translate_message(__lowerCamelCase   ,       __lowerCamelCase   ,       """encrypt"""					)
  
  
  
  
  
  def    _lowerCamelCase	(	__lowerCamelCase   ,       __lowerCamelCase					)   -> str:
  
       '''simple docstring'''
       return translate_message(__lowerCamelCase   ,       __lowerCamelCase   ,       """decrypt"""					)
  
  
  
  
  
  def    _lowerCamelCase	(	__lowerCamelCase   ,       __lowerCamelCase   ,       __lowerCamelCase					)   -> str:
  
       '''simple docstring'''
       UpperCAmelCase__			:     Optional[int]										= """"""
       UpperCAmelCase__			:     str										= LETTERS
       UpperCAmelCase__			:     List[str]										= key
  
       if mode == "decrypt":
            UpperCAmelCase__			:     Any										= chars_b, chars_a
  
       for symbol in message:
            if symbol.upper() in chars_a:
                 UpperCAmelCase__			:     List[str]										= 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    _lowerCamelCase	(	)   -> str:
  
       '''simple docstring'''
       UpperCAmelCase__			:     Optional[int]										= list(__lowerCamelCase					)
       random.shuffle(__lowerCamelCase					)
       return "".join(__lowerCamelCase					)
  
  
  if __name__ == "__main__":
        main()
  
  
  
  
  
  
  
style_context: 
  
  
  
  
  
  
  from __future__ import annotations
  
  
  
  
  
  
  
  class 							UpperCAmelCase_     :
  
  
  
  
       def __init__(							self  ,	_lowerCAmelCase		):
            UpperCAmelCase__			:     List[Any]										= value
            UpperCAmelCase__			:     Node | None										= None
            UpperCAmelCase__			:     Node | None										= None
  
  
  
  
  
  
  
  class 							UpperCAmelCase_     :
       __lowerCamelCase										=     42
  
  
  
  
       def __init__(							self		):
            UpperCAmelCase__			:     Any										= 0
  
  
  
  
       def      __UpperCAmelCase     (							self  ,	_lowerCAmelCase  ,	_lowerCAmelCase		):
            if node is None:
                 return
  
            if path_sum == self.target:
                 self.paths += 1
  
            if node.left:
                 self.depth_first_search(node.left  ,	path_sum + node.left.value		)
            if node.right:
                 self.depth_first_search(node.right  ,	path_sum + node.right.value		)
  
  
  
  
       def      __UpperCAmelCase     (							self  ,	_lowerCAmelCase  ,	_lowerCAmelCase = None		):
            if node is None:
                 return 0
            if target is not None:
                 UpperCAmelCase__			:     List[Any]										= target
  
            self.depth_first_search(_lowerCAmelCase  ,	node.value		)
            self.path_sum(node.left		)
            self.path_sum(node.right		)
  
            return self.paths
  
  
  if __name__ == "__main__":
        import doctest
  
        doctest.testmod()
  
  
  
  
  
  
  