encryption1.py

import random

result = ''
choice = ''
message = ''

characters_in_order = [chr(x) for x in range(32,127)]

while choice != 0:
    choice = input("\n Do you want to encrypt or decrypt the message?\n 1 to encrypt, 2 to decrypt or 0 to exit program. ")

    if str(choice) == '1':
        message = input('\nEnter message for encryption: ')

        r_seed = input('Enter an integer to use as a seed: ')
        random.seed(r_seed)
        shuffled_list = [chr(x) for x in range(32,127)]
        random.shuffle(shuffled_list)

        for i in range(0, len(message)):
            result += shuffled_list[characters_in_order.index(message[i])]

        print(result + '\n\n')
        result = ''

    elif str(choice) == '2':
        message = input('\nEnter message to decrypt: ')

        r_seed = input('Enter an integer to use as a seed (should be the same one used to encrypt): ')
        random.seed(r_seed)
        shuffled_list = [chr(x) for x in range(32,127)]
        random.shuffle(shuffled_list)

        for i in range(0, len(message)):
            result += characters_in_order[shuffled_list.index(message[i])]

        print(result + '\n\n')
        result = ''

    elif str(choice) != '0':
        print('You have entered an invalid input, please try again. \n\n')