• cipher.py

from random import randint
import random

message = input("Please input what you'd like to encrypt: ")
howmany = int(input("How many times would you like to encrypt this message: "))
start = 1
alphabet = [chr(x) for x in range(97, 123)]
newmessage = ""
add = int(randint(1, 6))
multipchoice = [1,3,5]
multiply = int(random.choice(multipchoice))

while start <= howmany:
    print("add: ", add, " multiply: ",multiply)
    for c in message:
        if c in alphabet:
            location = int((alphabet.index(c)))+1
            location = (location+add)*multiply
            if location > 26:
                while location > 26:
                    location = location-26
            newmessage+=(alphabet[location-1])
        else:
            newmessage+=c
    if start < howmany:
        message = newmessage
        newmessage = ""
        add = int(randint(1, 6))
        multiply = int(randint(1,3))
    start+=1

print(newmessage)

• cipher.py

from random import randint
import random

message = input("Please input what you'd like to encrypt: ")
howmany = int(input("How many times would you like to encrypt this message: "))
alphabet = [chr(x) for x in range(97, 123)]
multipchoice = [1,3,5]

for _ in range(howmany):
    newmessage = ""
    add = randint(1, 6)
    multiply = random.choice(multipchoice)
    print("add:", add, " multiply:",multiply)
    for c in message:
        if c in alphabet:
            location = (alphabet.index(c))+1
            location = (location+add)*multiply
            location = ((location+25)%26)+1
            newmessage+=(alphabet[location-1])
        else:
            newmessage+=c
    message = newmessage

print(message)