





from __future__ import annotations

import math
from collections import Counter
from string import ascii_lowercase


def _A       (   __magic_name__	):
   lowercase__       ,							lowercase__			       =  analyze_text(__magic_name__	)
   lowercase__			       =  list(" " + ascii_lowercase	)
   # what is our total sum of probabilities.
   lowercase__			       =  sum(single_char_strings.values()	)

   # one length string
   lowercase__			       =  0
   # for each alpha we go in our dict and if it is in it we calculate entropy
   for ch in my_alphas:
      if ch in single_char_strings:
         lowercase__			       =  single_char_strings[ch]
         lowercase__			       =  my_str / all_sum
         my_fir_sum += prob * math.loga(__magic_name__	)  # entropy formula.

    # print entropy
   print(f'''{round(-1 * my_fir_sum	):.1f}'''	)

   # two len string
   lowercase__			       =  sum(two_char_strings.values()	)
   lowercase__			       =  0
   # for each alpha (two in size) calculate entropy.
   for cha in my_alphas:
      for cha in my_alphas:
         lowercase__			       =  cha + cha
         if sequence in two_char_strings:
            lowercase__			       =  two_char_strings[sequence]
            lowercase__			       =  int(__magic_name__	) / all_sum
            my_sec_sum += prob * math.loga(__magic_name__	)

    # print second entropy
   print(f'''{round(-1 * my_sec_sum	):.1f}'''	)

   # print the difference between them
   print(f'''{round((-1 * my_sec_sum) - (-1 * my_fir_sum)	):.1f}'''	)


def _A       (   __magic_name__	):
   lowercase__			       =  Counter()  # type: ignore
   lowercase__			       =  Counter()  # type: ignore
   single_char_strings[text[-1]] += 1

   # first case when we have space at start.
   two_char_strings[" " + text[0]] += 1
   for i in range(0  , len(__magic_name__	) - 1	):
      single_char_strings[text[i]] += 1
      two_char_strings[text[i : i + 2]] += 1
   return single_char_strings, two_char_strings


def _A       (   ):
   import doctest

   doctest.testmod()
   # text = (
   #     "Had repulsive dashwoods suspicion sincerity but advantage now him. Remark "
   #     "easily garret nor nay. Civil those mrs enjoy shy fat merry. You greatest "
   #     "jointure saw horrible. He private he on be imagine suppose. Fertile "
   #     "beloved evident through no service elderly is. Blind there if every no so "
   #     "at. Own neglected you preferred way sincerity delivered his attempted. To "
   #     "of message cottage windows do besides against uncivil.  Delightful "
   #     "unreserved impossible few estimating men favourable see entreaties. She "
   #     "propriety immediate was improving. He or entrance humoured likewise "
   #     "moderate. Much nor game son say feel. Fat make met can must form into "
   #     "gate. Me we offending prevailed discovery. "
   # )

   # calculate_prob(text)


if __name__ == "__main__":
  main()













def _A       (   __magic_name__	):
   lowercase__			       =  ""
   for ch in key:
      if ch == " " or ch not in key_no_dups and ch.isalpha():
         key_no_dups += ch
   return key_no_dups


def _A       (   __magic_name__	):
   lowercase__			       =  [chr(i + 65	) for i in range(26	)]
   # Remove duplicate characters from key
   lowercase__			       =  remove_duplicates(key.upper()	)
   lowercase__			       =  len(__magic_name__	)
   # First fill cipher with key characters
   lowercase__			       =  {alphabet[i]: char for i, char in enumerate(__magic_name__	)}
   # Then map remaining characters in alphabet to
   # the alphabet from the beginning
   for i in range(len(__magic_name__	)  , 26	):
      lowercase__			       =  alphabet[i - offset]
      # Ensure we are not mapping letters to letters previously mapped
      while char in key:
         offset -= 1
         lowercase__			       =  alphabet[i - offset]
      lowercase__			       =  char
   return cipher_alphabet


def _A       (   __magic_name__  , __magic_name__	):
   return "".join(cipher_map.get(__magic_name__  , __magic_name__	) for ch in message.upper()	)


def _A       (   __magic_name__  , __magic_name__	):
   lowercase__			       =  {v: k for k, v in cipher_map.items()}
   return "".join(rev_cipher_map.get(__magic_name__  , __magic_name__	) for ch in message.upper()	)


def _A       (   ):
   lowercase__			       =  input("Enter message to encode or decode: "	).strip()
   lowercase__			       =  input("Enter keyword: "	).strip()
   lowercase__			       =  input("Encipher or decipher? E/D:"	).strip()[0].lower()
   try:
      lowercase__			       =  {"e": encipher, "d": decipher}[option]
   except KeyError:
      raise KeyError("invalid input option"	)
   lowercase__			       =  create_cipher_map(__magic_name__	)
   print(func(__magic_name__  , __magic_name__	)	)


if __name__ == "__main__":
  import doctest

  doctest.testmod()
  main()






