为什么这个 python 代码一次打印一个字母？

Question

def encrypt():
    msg = input("Enter the message you would like to encrypt: ").strip()
    print()
    key = int(input("Enter key to encrypt, a number 0-25: "))

    encryptedMessage = ""
    for ch in msg:
        if ord(ch) == 32: 
            encryptedMessage += ch 
            
        elif ord(ch) + key > 122:
            #after z moves back to a, a = 97, z = 122
            temp = (ord(ch) + key) - 122 
            encryptedMessage += chr(96+temp)
             
        elif (ord(ch) + key > 90) and (ord(ch) < 96):
            #moving back to a after z
            temp = (ord(ch) + key) - 90
            encryptedMessage += chr(64+temp)
                                          
        else:
            #incase of letters being both caps
            encryptedMessage += chr(ord(ch) + key)
       
        print(encryptedMessage)

        main()

抱歉，我真的不知道是什么导致了这种情况发生的大量代码。这应该是一个 Caesar Cipher 加密程序，您输入消息并移位，它应该打印代码。但是，它只打印一个字母，如果我在最后删除 main()，它会一次打印每个字母，例如，让我们说这个词是 Lemons it go、L、LE、LEM 等等。如果有人知道如何帮助解决这个问题，我将不胜感激，谢谢！

Answer 1

只是取消缩进 print(encryptedMessage) 所以它不在循环中。

def encrypt():
    ...
    for ch in msg:
        ...
    print(encryptedMessage)

Answer 2

这里，这应该适合你的需要

def encrypt():
    msg = input("Enter the message you would like to encrypt: ").strip()
    print()
    key = int(input("Enter key to encrypt, a number 0-25: "))

    encryptedMessage = ""
    for ch in msg:
        if ord(ch) == 32:
            encryptedMessage += ch

        elif ord(ch) + key > 122:
            #after z moves back to a, a = 97, z = 122
            temp = (ord(ch) + key) - 122
            encryptedMessage += chr(96+temp)

        elif (ord(ch) + key > 90) and (ord(ch) < 96):
            #moving back to a after z
            temp = (ord(ch) + key) - 90
            encryptedMessage += chr(64+temp)

        else:
            #incase of letters being both caps
            encryptedMessage += chr(ord(ch) + key)

    print(encryptedMessage)

encrypt()

现在，如果您看到，它可以完美运行

Enter the message you would like to encrypt: Hello World

Enter key to encrypt, a number 0-25: 15
Wtaad Ldgas

Process finished with exit code 0