Question

我正在尝试在Python中创建一个加密程序，为每次使用创建一个新的“密钥”。那部分工作正常。我遇到问题的部分是实际加密。我的代码不会加密用户提供的字符串。它似乎一直工作到for循环，我不明白为什么它不起作用。

import keycreater as k
k = k.keycreater()
print(k.key)
class encrypt(object):
    '''
    This class is used to actually encrypt the string
    '''
    def __init__(self):
        '''
        This method is used to initialize the class.
        Attributes: initial (what the user wants encrypted), new (the string after it is encrypted).
        '''
        self.initial = []
        self.new = ''
    def getstr(self):
        '''
        This method gets what the user wants to encrypt.
        Attributes: initial (what the user wants encrypted).
        '''
        self.initial = raw_input('What would you like to encrypt? ')
    def encrypt(self):
        '''
        This method takes the string that the user wants encrypted and encrypts it with a for loop.
        Attributes: alphabet (list of characters), key (key), new (encrypted string).
        '''
        alphabet = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '1', '2', '3', '4', '5', '6', '7', '8', '9']
        key = k.key
        self.new = self.initial.lower()
        for x in range(0,35):
            self.new.replace(alphabet[x],key[x])

a = encrypt()
a.getstr()
a.encrypt()
print(a.new)

Answer 1

你的for循环工作正常。但jonrsharpe说，string是不变的。此外，您的for-loop and replace也会返回错误的结果。

您应该将字符串拆分为字符，并使用键替换每个字符。之后，您可以使用''.join(characters)创建新字符串。

encode_string = []
for s in user_string:
   encode_string.append(convert(s))
return ''.join(encode_string)

或与map

相同

''.join(map(convert, user_string))

您也可以从string模块中导入字母。

string.replace不会在Python中返回修改后的字符串

1 个答案: