Function checkValidKey

ciphers/simple_substitution_cipher.py:22–29

(key)

    print('\n%sion: \n%s' % (mode.title(), translated))
    
def checkValidKey(key):
    keyList = list(key)
    lettersList = list(LETTERS)
    keyList.sort()
    lettersList.sort()

    if keyList != lettersList:
        sys.exit('Error in the key or symbol set.')

def encryptMessage(key, message):
    """