code: 
  
  
  
  
  
  
  """simple docstring"""
  
  from typing import Literal
  
  lowercase__      =				"""ABCDEFGHIJKLMNOPQRSTUVWXYZ"""
  
  def 	__lowerCamelCase			(						__UpperCamelCase   , __UpperCamelCase   , __UpperCamelCase )		->					str:
  
    """simple docstring"""
  
  
  
  
  
  
  
    lowerCAmelCase_     :							List[Any]             =    LETTERS if mode == "decrypt" else key
    lowerCAmelCase_     :							str             =    key if mode == "decrypt" else LETTERS
    lowerCAmelCase_     :							int             =    ""
    # loop through each symbol in the message
    for symbol in message:
      if symbol.upper() in chars_a:
        # encrypt/decrypt the symbol
        lowerCAmelCase_     :							List[str]             =    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			(						__UpperCamelCase   , __UpperCamelCase )		->					str:
  
    """simple docstring"""
  
  
  
  
  
  
  
    return translate_message(lowercase__   , lowercase__   , "encrypt" )
  
  def 	__lowerCamelCase			(						__UpperCamelCase   , __UpperCamelCase )		->					str:
  
    """simple docstring"""
  
  
  
  
  
  
  
    return translate_message(lowercase__   , lowercase__   , "decrypt" )
  
  def 	__lowerCamelCase			(						)		->					None:
  
    """simple docstring"""
  
  
  
  
  
  
  
    lowerCAmelCase_     :							str             =    "Hello World"
    lowerCAmelCase_     :							Dict             =    "QWERTYUIOPASDFGHJKLZXCVBNM"
    lowerCAmelCase_     :							Any             =    "decrypt"  # set to 'encrypt' or 'decrypt'
  
    if mode == "encrypt":
      lowerCAmelCase_     :							Any             =    encrypt_message(lowercase__   , lowercase__ )
    elif mode == "decrypt":
      lowerCAmelCase_     :							int             =    decrypt_message(lowercase__   , lowercase__ )
    print(f'''Using the key {key}, the {mode}ed message is: {translated}''' )
  
  
  if __name__ == "__main__":
       import doctest
  
       doctest.testmod()
       main()
  
style_context: 
  
  
  
  
  
  
  """simple docstring"""
  
  from typing import TYPE_CHECKING
  
  from ...utils import (
      OptionalDependencyNotAvailable,
      _LazyModule,
      is_torch_available,
      is_vision_available,
  )
  
  
  lowercase__      =				{
      """configuration_mobilevitv2""": [
          """MOBILEVITV2_PRETRAINED_CONFIG_ARCHIVE_MAP""",
          """MobileViTV2Config""",
          """MobileViTV2OnnxConfig""",
      ],
  }
  
  
  try:
  					if not is_torch_available():
  										raise OptionalDependencyNotAvailable()
  except OptionalDependencyNotAvailable:
  					pass
  else:
  					lowercase__      =				[
  					    """MOBILEVITV2_PRETRAINED_MODEL_ARCHIVE_LIST""",
  					    """MobileViTV2ForImageClassification""",
  					    """MobileViTV2ForSemanticSegmentation""",
  					    """MobileViTV2Model""",
  					    """MobileViTV2PreTrainedModel""",
  					]
  
  if TYPE_CHECKING:
  					from .configuration_mobilevitva import (
  					    MOBILEVITV2_PRETRAINED_CONFIG_ARCHIVE_MAP,
  					    MobileViTVaConfig,
  					    MobileViTVaOnnxConfig,
  					)
  
  					try:
  										if not is_torch_available():
  															raise OptionalDependencyNotAvailable()
  					except OptionalDependencyNotAvailable:
  										pass
  					else:
  										from .modeling_mobilevitva import (
  										    MOBILEVITV2_PRETRAINED_MODEL_ARCHIVE_LIST,
  										    MobileViTVaForImageClassification,
  										    MobileViTVaForSemanticSegmentation,
  										    MobileViTVaModel,
  										    MobileViTVaPreTrainedModel,
  										)
  
  else:
  					import sys
  
  					lowercase__      =				_LazyModule(__name__, globals()["""__file__"""], _import_structure, module_spec=__spec__)
  