Vigenère cipher：如何使加密消息出现在打印功能中？

Question

我是编码初学者，也是 Python。现在我正在研究 Vigenère cipher.

我已经可以使用密钥加密消息了。我在每段代码上添加了注释以供参考。这是我的代码。我的问题在代码下面。

# Ask user for message
print('type a message.')
message = input()

# print a white line for neatness
print()

# ask user for a key
print('give your key')
key = input()

# create a range with the length of the message
ran = range(len(message))

# Iterate though the range and therefor show all the letters
for i in ran:
    # get current letters for this iteration
    currentLetter = message[i]
    currentKeyLetter = key[i % len(key)]

    # Get corresponding numbers
    numberLetter = ord(currentLetter)
    numberKeyLetter = ord(currentKeyLetter)

    # Add two letters
    sumTwoLetters = numberLetter + numberKeyLetter

    # Get the number of the encrypted letter
    newNumberLetter = sumTwoLetters % 128
    # Get the encrypted number based on number
    newLetter = chr(newNumberLetter)

    # print out the result
    printText = currentLetter + "(" + str(numberLetter) + ") + "
    printText += currentKeyLetter + "(" + str(numberKeyLetter) + ") = "
    printText += newLetter + "(" + str(newNumberLetter) + ")"
    print(printText)

该代码要求用户输入消息和密钥。 ran 变量创建一个包含消息长度的范围。

之后，for 循环使用 ord 和 chr

的密钥对消息进行加密

加密后的信件存放在变量newLetter 用户可以看到程序用 printText

做了什么

但是，我的问题是：如何使加密文本出现在单个字符串上。我试图循环进行。我失败得很惨（失败到不想表现出来）

有没有人对如何使加密消息显示在一行文本中有任何建议？

Answer 1

您可以在 list 中收集结果，然后 join() 在 for 循环结束后将它们全部合并到一个字符串中。查看更改的评论。

...
results = []  # ADDED.

# Iterate though the range and therefor show all the letters
for i in ran:
    # get current letters for this iteration
    currentLetter = message[i]
    currentKeyLetter = key[i % len(key)]

    # Get corresponding numbers
    numberLetter = ord(currentLetter)
    numberKeyLetter = ord(currentKeyLetter)

    # Add two letters
    sumTwoLetters = numberLetter + numberKeyLetter

    # Get the number of the encrypted letter
    newNumberLetter = sumTwoLetters % 128
    # Get the encrypted number based on number
    newLetter = chr(newNumberLetter)

    # print out the result
    printText = currentLetter + "(" + str(numberLetter) + ") + "
    printText += currentKeyLetter + "(" + str(numberKeyLetter) + ") = "
    printText += newLetter + "(" + str(newNumberLetter) + ")"
    results.append(printText)  # PUT IN results LIST INSTEAD OF PRINTING.

print(''.join(results))  # ADDED.

Answer 2

有两种简单的方法。 (1) 在循环内构建字符串并在循环外打印它，或者 (2) 在循环中移动时打印每个字符但没有换行符，在循环后加上一个换行符。

尝试其中一种方法，如果您需要更多帮助，请添加评论。您将通过自己尝试了解更多信息！

Vigenère cipher：如何使加密消息出现在打印功能中？

Vigenère cipher: How to make it so that the encrypted message appears in a print function?

python

encryption

vigenere

python-3.6