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Caesar s Cipher using python, could use a little help

def affine (a, b):
    for i in range(26):
        print chr(i+65) + ": " + chr (((a*i+b)%26)+65)

这是我所谈到的。我如何用“我们的世界”这一信息来利用这一信息并加以加密?

如何加密信息?

Answer 1

可读但又可读的方式是:

   def encript(message, offset):
       result = ""
       for letter in message:
           if letter.isalpha():
               new_letter = chr(ord(letter) + offset)
               if (new_letter > "Z" and letter.isupper()) or (new_letter > "z" and letter.islower()):
                    new_letter = chr(ord(new_letter) - 26)
           else:
               new_letter = letter
           result += new_letter
        return result

a 因此,可以撰写一条行文:

>>> encript = lambda x, offset: "".join(chr(ord(le) + ((offset - (26 if (ord(le.upper()) + offset > ord("Z") )  else 0 ) ) if le.isalpha() else 0))  for le in x )
>>> encript("IBM 9000", -1)
 HAL 9000

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