使用感叹号使凯撒密码函数加密

Question

谁能帮我制作一个加密消息的函数，如果消息中包含感叹号。例如：你好！你好。截至目前，我的函数 (HOWDY! Hello.) 的输出是

Your translated text is:
MTBIDEEMJQQTE

真正应该的时候:

Your translated text is:
MTBID! Mello.

我的完整代码：

alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
message = ""
encryptedmessage = " "
keynumber = 0

def encrypt():
 global message
 global encryptedmessage
 global keynumber
 print()
 print()
 message = str(input("Enter your message:"))
 print()
 print()
 keynumber = int(input("Enter the key number (1-26)"))
 print()
 print()
 for i in message:
  position = alphabet.find(i)
  newposition = (position+5)%26
  encryptedmessage +=alphabet[newposition]
 print("Your translated text is:")
 print(encryptedmessage)


def decrypt():
 global message
 global encryptedmessage
 global keynumber
 message = str(input("Enter your message:"))
 keynumber = int(input("Enter the key number (1-26)"))


action = input("Do you wish to encrypt or decrypt a message?")

if action == "encrypt":
 encrypt()
if action == "decrypt":
 decrypt()

Answer 1

如果 i 不在 alphabet 中，

alphabet.find(i) 将是 -1。发生这种情况时，您应该将 i 复制到加密邮件中，而不是对其进行编码。

position = alphabet.find(i)
if position == -1:
    encryptedmessage += i
else:
    newPosition = (position + 5) % 26
    encryptedmessage += alphabet[newPosition]

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