Question

我正在尝试制作一个加密python程序，但我无法让它工作。我已经将输入和输出函数添加到最后但是我收到了一条错误消息，我在下面发布了该消息。

这是我试过的

#Caesar Cipher
MAX_KEY_SIZE = 26
def getMode():
    while True:
        mode = raw_input('Do you wish to encrypt or decrypt a message? ')
        mode = mode.lower()
        if mode in "encrypt e decrypt d":
            return mode
        else:
            print 'Enter either \"encrypt\" or \"e\" or \"decrypt\" or \"d\ ".'

def getMessage():
    def getMessage():
        return raw_input('Enter you message ')

def getKey():
    key = 0
    while True:
        key = int(raw_input('Enter a key number (1-26) '))
        if key >=1 and key <= MAX_KEY_SIZE:
            return key

def getTranslatatedMessage(mode, message, key):
    if mode[0] == "d":
        key = -key
    translated = ""
    for symbol in message:
        if symbol.isalpha():
            num = ord(symbol)
            num += key

            if symbol.isupper():
                if num > ord("Z"):
                    num -= 26
                elif num < ord("A"):
                    num += 26
            elif symbol.islower():
                if num > ord("z"):
                    num -= 26
                elif num < ord("a"):
                    num += 26

            translated += chr(num)
        else:
            translated += symbol
    return translated
mode = getMode()
message = getMessage()
key = getKey()
print 'Translated message: ', getTranslatatedMessage(mode, message, key)

f = open("temp.txt", "w") 
f.write("Hello!\n")
f.close

#open file to read this time
f = open("temp.txt", "r")
line = f.readline()
print(line)
f.close

#try binary read...
f = open("temp.txt", "rb")
line = f.readlines()
print(line)
f.close

if "d" in mode:
    encrypted = EncyptMessage(message,key) #you will need to make this
    f.open("temp.txt","w")
    f.write(encrypted)
else:
    unencrypted = getTranslatatedMessage(mode, message, key)
    f.open("temp.txt","w")
    f.close

我得到一个错误说：

Do you wish to encrypt or decrypt a message? encrypt
Enter a key number (1-26) 1
Translated message: 

Traceback (most recent call last):
  File "/Users/Ally/Documents/Python Programs/EncryptDecrypt Program-Enhanced", line 50, in <module>
    print 'Translated message: ', getTranslatatedMessage(mode, message, key)
  File "/Users/Ally/Documents/Python Programs/EncryptDecrypt Program-Enhanced", line 27, in getTranslatatedMessage
    for symbol in message:
TypeError: 'NoneType' object is not iterable
>>>

Answer 1

看起来您最终会想要它，因为您需要定义所有函数并调用所有函数。我不完全确定这是你要问的，但这会奏效。我也进入了我认为应该为翻译和解密做的事情。

MAX_KEY_SIZE = 26

def getMode():
    while True:
        mode = raw_input("Do you wish to encrypt or decrypt a message?").lower() #note I am using `raw_input`
        if mode in ["encrypt", "e", "decrypt", "d"]:
            return mode
        else:
              print('"Enter either "encrypt" or "e" or "decrypt" or "d".')
              getMode() # Note this change
def getMessage():
    return input("Enter you message")

def getKey():
    key = 0
    while True:
        key = int(input("Enter a key number (1-26)"))
        if (key >=1 and key <= MAX_KEY_SIZE):
            return key

def getTranslatatedMessage(mode, message, key):
    if mode[0] == "d":
        key = -key
    translated = ""

    for symbol in message:
        if symbol.isalpha():
            num = ord(symbol)
            num += key

            if symbol.isupport():
                if num > ord("Z"):
                  num -= 26
                elif num < ord("A"):
                  num += 26
            elif symbol.islower():
                if num < ord("z"):
                  num += 26
                elif num < ord("a"):
                  num += 26

            translated += chr(num)
        else:
            translated += symbol
    return translated
mode = getMode()
message = getMessage()
key = getKey()

f = open("temp.txt", "w") 
f.write("Hello!\n")
f.close

#open file to read this time
f = open("temp.txt", "r")
line = f.readline()
print(line)
f.close

#try binary read...
f = open("temp.txt", "rb")
line = f.readlines()
print(line)
f.close

if "d" in mode:
    encrypted = "Later change encrypted to equal the function->" #EncryptMessage(message,key) #you will need to make this
    f.open("temp.txt","w")
    f.write(encrypted)
else:
    unencrypted = getTranslatatedMessage(mode, message, key)
    f.open("temp.txt","w")
    f.close

Answer 2

getTranslatatedMessage(mode, messafe, key):

应该是

getTranslatatedMessage(mode, message, key):

需要帮助添加输入和输出到我的python加密程序

2 个答案: