Caesar Cipher issue

Question

I am trying to implement a Caesar cipher.

I have tried to return message in the function, but I get an error message (outside function). Can anyone help, please?

Answer 1

Here's Python 3 Caesar cipher implementation that uses str.translate():

#!/usr/bin/env python3
import string

def caesar(plaintext, shift, alphabet=string.ascii_lowercase):
    shifted_alphabet = alphabet[shift:] + alphabet[:shift]
    return plaintext.translate(plaintext.maketrans(alphabet, shifted_alphabet))

message = input("type message to encode")
shift = int(input("Enter number to code "))
print(caesar(message.lower(), shift))

Here's Python 2 version of Caesar Cipher.