





from __future__ import annotations



def 		A_    (					_lowerCAmelCase							,       _lowerCAmelCase = None							,       _lowerCAmelCase = None							,       _lowerCAmelCase = False							,       )						->			tuple[int, float, str]:
 UpperCamelCase     : Union[str, Any]	     =       cipher_alphabet or [chr(_lowerCAmelCase					) for i in range(97							,       123					)]

 # If the argument is None or the user provided an empty dictionary
 if not frequencies_dict:
  # Frequencies of letters in the english language (how much they show up)
  UpperCamelCase     : Optional[int]	     =       {
      "a": 0.08_497,
      "b": 0.01_492,
      "c": 0.02_202,
      "d": 0.04_253,
      "e": 0.11_162,
      "f": 0.02_228,
      "g": 0.02_015,
      "h": 0.06_094,
      "i": 0.07_546,
      "j": 0.00_153,
      "k": 0.01_292,
      "l": 0.04_025,
      "m": 0.02_406,
      "n": 0.06_749,
      "o": 0.07_507,
      "p": 0.01_929,
      "q": 0.00_095,
      "r": 0.07_587,
      "s": 0.06_327,
      "t": 0.09_356,
      "u": 0.02_758,
      "v": 0.00_978,
      "w": 0.02_560,
      "x": 0.00_150,
      "y": 0.01_994,
      "z": 0.00_077,
  }
 else:
  # Custom frequencies dictionary
  UpperCamelCase     : Optional[int]	     =       frequencies_dict

 if not case_sensitive:
  UpperCamelCase     : Dict	     =       ciphertext.lower()

 # Chi squared statistic values
 UpperCamelCase     : dict[int, tuple[float, str]]	     =       {}

 # cycle through all of the shifts
 for shift in range(len(_lowerCAmelCase					)					):
  UpperCamelCase     : Optional[Any]	     =       ""

  # decrypt the message with the shift
  for letter in ciphertext:
   try:
    # Try to index the letter in the alphabet
    UpperCamelCase     : List[Any]	     =       (alphabet_letters.index(letter.lower()					) - shift) % len(
        _lowerCAmelCase					)
    decrypted_with_shift += (
        alphabet_letters[new_key].upper()
        if case_sensitive and letter.isupper()
        else alphabet_letters[new_key]
    )
   except ValueError:
    # Append the character if it isn't in the alphabet
    decrypted_with_shift += letter

  UpperCamelCase     : Optional[Any]	     =       0.0

  # Loop through each letter in the decoded message with the shift
  for letter in decrypted_with_shift:
   if case_sensitive:
    UpperCamelCase     : Union[str, Any]	     =       letter.lower()
    if letter in frequencies:
     # Get the amount of times the letter occurs in the message
     UpperCamelCase     : List[Any]	     =       decrypted_with_shift.lower().count(_lowerCAmelCase					)

     # Get the excepcted amount of times the letter should appear based
     # on letter frequencies
     UpperCamelCase     : Any	     =       frequencies[letter] * occurrences

     # Complete the chi squared statistic formula
     UpperCamelCase     : Any	     =       ((occurrences - expected) ** 2) / expected

     # Add the margin of error to the total chi squared statistic
     chi_squared_statistic += chi_letter_value
   else:
    if letter.lower() in frequencies:
     # Get the amount of times the letter occurs in the message
     UpperCamelCase     : Tuple	     =       decrypted_with_shift.count(_lowerCAmelCase					)

     # Get the excepcted amount of times the letter should appear based
     # on letter frequencies
     UpperCamelCase     : Dict	     =       frequencies[letter] * occurrences

     # Complete the chi squared statistic formula
     UpperCamelCase     : Optional[int]	     =       ((occurrences - expected) ** 2) / expected

     # Add the margin of error to the total chi squared statistic
     chi_squared_statistic += chi_letter_value

        # Add the data to the chi_squared_statistic_values dictionary
  UpperCamelCase     : str	     =       (
      chi_squared_statistic,
      decrypted_with_shift,
  )

 # Get the most likely cipher by finding the cipher with the smallest chi squared
 # statistic
 def chi_squared_statistic_values_sorting_key(_lowerCAmelCase					) -> tuple[float, str]:
  return chi_squared_statistic_values[key]

 UpperCamelCase     : int	     =       min(
     _lowerCAmelCase							,       key=_lowerCAmelCase							,       )

 # Get all the data from the most likely cipher (key, decoded message)
 (
     (
     UpperCamelCase
 )     ,   (
     UpperCamelCase
 )     ,   
 )     : int	     =       chi_squared_statistic_values[most_likely_cipher]

 # Return the data on the most likely shift
 return (
     most_likely_cipher,
     most_likely_cipher_chi_squared_value,
     decoded_most_likely_cipher,
 )







from typing import TYPE_CHECKING

from ...utils import (
    OptionalDependencyNotAvailable,
    _LazyModule,
    is_flax_available,
    is_tf_available,
    is_torch_available,
)


__lowerCamelCase	:					str			  =					{"""configuration_encoder_decoder""": ["""EncoderDecoderConfig"""]}

try:
    if not is_torch_available():
        raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
    pass
else:
    __lowerCamelCase	:					Optional[Any]			  =					["""EncoderDecoderModel"""]

try:
    if not is_tf_available():
        raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
    pass
else:
    __lowerCamelCase	:					Optional[Any]			  =					["""TFEncoderDecoderModel"""]

try:
    if not is_flax_available():
        raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
    pass
else:
    __lowerCamelCase	:					Union[str, Any]			  =					["""FlaxEncoderDecoderModel"""]

if TYPE_CHECKING:
    from .configuration_encoder_decoder import EncoderDecoderConfig

    try:
        if not is_torch_available():
            raise OptionalDependencyNotAvailable()
    except OptionalDependencyNotAvailable:
        pass
    else:
        from .modeling_encoder_decoder import EncoderDecoderModel

    try:
        if not is_tf_available():
            raise OptionalDependencyNotAvailable()
    except OptionalDependencyNotAvailable:
        pass
    else:
        from .modeling_tf_encoder_decoder import TFEncoderDecoderModel

    try:
        if not is_flax_available():
            raise OptionalDependencyNotAvailable()
    except OptionalDependencyNotAvailable:
        pass
    else:
        from .modeling_flax_encoder_decoder import FlaxEncoderDecoderModel

else:
    import sys

    __lowerCamelCase	:					Dict			  =					_LazyModule(__name__, globals()["""__file__"""], _import_structure, module_spec=__spec__)
