code: 
  
  """simple docstring"""
  from typing import TYPE_CHECKING
  
  from ...utils import OptionalDependencyNotAvailable, _LazyModule, is_torch_available, is_vision_available
  
  
  _A						=     {
      """configuration_oneformer""": ["""ONEFORMER_PRETRAINED_CONFIG_ARCHIVE_MAP""", """OneFormerConfig"""],
      """processing_oneformer""": ["""OneFormerProcessor"""],
  }
  
  try:
      if not is_vision_available():
          raise OptionalDependencyNotAvailable()
  except OptionalDependencyNotAvailable:
      pass
  else:
      _A						=     ["""OneFormerImageProcessor"""]
  
  try:
      if not is_torch_available():
          raise OptionalDependencyNotAvailable()
  except OptionalDependencyNotAvailable:
      pass
  else:
      _A						=     [
          """ONEFORMER_PRETRAINED_MODEL_ARCHIVE_LIST""",
          """OneFormerForUniversalSegmentation""",
          """OneFormerModel""",
          """OneFormerPreTrainedModel""",
      ]
  
  if TYPE_CHECKING:
      from .configuration_oneformer import ONEFORMER_PRETRAINED_CONFIG_ARCHIVE_MAP, OneFormerConfig
      from .processing_oneformer import OneFormerProcessor
  
      try:
          if not is_vision_available():
              raise OptionalDependencyNotAvailable()
      except OptionalDependencyNotAvailable:
          pass
      else:
          from .image_processing_oneformer import OneFormerImageProcessor
      try:
          if not is_torch_available():
              raise OptionalDependencyNotAvailable()
      except OptionalDependencyNotAvailable:
          pass
      else:
          from .modeling_oneformer import (
              ONEFORMER_PRETRAINED_MODEL_ARCHIVE_LIST,
              OneFormerForUniversalSegmentation,
              OneFormerModel,
              OneFormerPreTrainedModel,
          )
  
  
  else:
      import sys
  
      _A						=     _LazyModule(__name__, globals()["""__file__"""], _import_structure)
  
  
style_context: 
  
  """simple docstring"""
  def 				a__	(	lowerCAmelCase ,  lowerCAmelCase						)  ->   str:
        if not isinstance(lowerCAmelCase ,  lowerCAmelCase						):
              raise TypeError("""plaintext must be a string"""						)
        if not isinstance(lowerCAmelCase ,  lowerCAmelCase						):
              raise TypeError("""key must be a string"""						)
  
        if not plaintext:
              raise ValueError("""plaintext is empty"""						)
        if not key:
              raise ValueError("""key is empty"""						)
  
        key += plaintext
        UpperCAmelCase__ :       Dict						=						plaintext.lower()
        UpperCAmelCase__ :       Tuple						=						key.lower()
        UpperCAmelCase__ :       Optional[int]						=						0
        UpperCAmelCase__ :       Tuple						=						0
        UpperCAmelCase__ :       Optional[int]						=						""""""
        while plaintext_iterator < len(lowerCAmelCase						):
              if (
                  ord(plaintext[plaintext_iterator]						) < 97
                  or ord(plaintext[plaintext_iterator]						) > 1_22
              ):
                    ciphertext += plaintext[plaintext_iterator]
                    plaintext_iterator += 1
              elif ord(key[key_iterator]						) < 97 or ord(key[key_iterator]						) > 1_22:
                    key_iterator += 1
              else:
                    ciphertext += chr(
                        (
                            (ord(plaintext[plaintext_iterator]						) - 97 + ord(key[key_iterator]						))
                            - 97
                        )
                        % 26
                        + 97						)
                    key_iterator += 1
                    plaintext_iterator += 1
        return ciphertext
  
  
  
  
  def 				a__	(	lowerCAmelCase ,  lowerCAmelCase						)  ->   str:
        if not isinstance(lowerCAmelCase ,  lowerCAmelCase						):
              raise TypeError("""ciphertext must be a string"""						)
        if not isinstance(lowerCAmelCase ,  lowerCAmelCase						):
              raise TypeError("""key must be a string"""						)
  
        if not ciphertext:
              raise ValueError("""ciphertext is empty"""						)
        if not key:
              raise ValueError("""key is empty"""						)
  
        UpperCAmelCase__ :       Union[str, Any]						=						key.lower()
        UpperCAmelCase__ :       int						=						0
        UpperCAmelCase__ :       int						=						0
        UpperCAmelCase__ :       int						=						""""""
        while ciphertext_iterator < len(lowerCAmelCase						):
              if (
                  ord(ciphertext[ciphertext_iterator]						) < 97
                  or ord(ciphertext[ciphertext_iterator]						) > 1_22
              ):
                    plaintext += ciphertext[ciphertext_iterator]
              else:
                    plaintext += chr(
                        (ord(ciphertext[ciphertext_iterator]						) - ord(key[key_iterator]						)) % 26
                        + 97						)
                    key += chr(
                        (ord(ciphertext[ciphertext_iterator]						) - ord(key[key_iterator]						)) % 26
                        + 97						)
                    key_iterator += 1
              ciphertext_iterator += 1
        return plaintext
  
  
  if __name__ == "__main__":
      import doctest
  
      doctest.testmod()
      _A						=     int(input("""Type 1 to encrypt or 2 to decrypt:"""))
      if operation == 1:
          _A						=     input("""Typeplaintext to be encrypted:\n""")
          _A						=     input("""Type the key:\n""")
          print(encrypt(plaintext, key))
      elif operation == 2:
          _A						=     input("""Type the ciphertext to be decrypted:\n""")
          _A						=     input("""Type the key:\n""")
          print(decrypt(ciphertext, key))
      decrypt("""jsqqs avvwo""", """coffee""")
  
  