encryption - Can't resolve this error in python ceaser cipher

Question

this is the code:

import sys

LETTERS = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'

def decrypt_caesor(message):
   for key in range(len(LETTERS)):
      translated = ''
      for symbol in message:
         if symbol in LETTERS:
            num = LETTERS.find(symbol)
            num = num - str(key)
            if num < 0:
               num = num + len(LETTERS)
            translated = translated + LETTERS[num]
         else:
            translated = translated + symbol     
         print('Hacking key #%s: %s' % (key, translated))


if __name__ == "__main__":
   # gets the passed parameter from terminal/command prompt
   message = sys.argv[1]
   decrypt_caesor()

Could you please help me correct this code? I don't get what is my problem. Seems like there is a problem with importing a string or am i wrong?

JGTIKtOTtGtXGOTEtJGE is what i should decode.

Answer 1

等待大神解答