Question

好的，所以我做了很多研究，但我找不到任何答案，所以我来这里寻求帮助。

我遇到的问题是我无法获取变量，然后在我的代码后台将该变量的每个字符串转换回其ascii形式并使用数学操作它，例如+， - ，*和/。这是我的代码..

注意：我有一个理论，它使用for循环来说明这个变量中的每个字符，做......等等等等。不管怎样，这是我的代码。

import random
import sys
import time


invalid_input = True

def start():

print("Welcome to the Encryption / Decryption Program!")
menuAnswer = input("Please select the number corresponding to the option you would like (1 - 3)\n---------------------------------\n[1] Encrypt\n[2] Decrypt\n[3] Exit the program\n---------------------------------\n")

if menuAnswer == '1':
    print("You have chosen to Encrypt!")
    invalid_input = False
    message = open("sample.txt","r")
    msgName = input("What is the name of the text document you would like to Encrypt?\n")
    msgName = msgName.upper()
    if msgName == 'SAMPLE':
        key = '' #This variable will have the encryption key stored inside of it.

        for i in range(0,8):
            random_number = (random.randint(33,162)) #Generate a random ascii number from the range 33 to 162
            key +=str(chr(random_number)) #Convert and store this ascii number as a character to the variable 'Key'
        print(key)
        print("Remember this key, as you will need it to decrypt your file!")
        #\\ Offset //# #Finding the offset, must be able to convert each individual character of the key variable and return it to its usual form to manipulate using math.
    else:
        print("Invalid Filename")



elif menuAnswer == '2':
    print("You have chosen to Decrypt!")
    invalid_input = False
elif menuAnswer == '3':
    print("You have chosen to exit!")
    invalid_input = False
    time.sleep(1)
    print("Exiting...")
    time.sleep(1.5)
    exit()
else:
    print("Invalid Input, Please try again!")

while invalid_input:
        start()

很抱歉，如果这个问题很难理解，我自己很困惑，并且已经坚持了一个星期。

Answer 1

如果我理解正确你想要将字符串的每个字符转换为ascii数字，然后对其进行某种数学运算，然后将其转换回字符串，你可以使用ord()这样做

s = 'Sample'
tmp = ''
for i in s:
    tmp += chr(ord(i)+1)
print tmp

Tbnqmf

虽然使用代码你不需要将它转换为字符串，然后返回字符来操作它，你只需选择一个随机数就可以操作它

import random

def start():
    key = '' 
    for i in range(0,8):
        random_number = (random.randint(33,162)) 
        key +=chr(random_number+1) 
        print(key)

start()

注意操作角色时需要小心，因为你可以将其操作为不是ascii字符的数字

将变量中的字符转换为原始的ascii格式

1 个答案: