CaesarCipher.py

#!/usr/bin/python
#CaesarCipher.py
#Python 2.7
#By Chris Clarke
#11.06.2015

def main():
   message = raw_input ("Please enter message to encode: ").lower()
   offset = int (input ("Enter offset: "))
   result = ""
   for ch in message:
      x = ord(ch) + offset
      if ch.isalpha() and x > ord('z'): # wrap around
         x -= 26
      result += chr(x)
   print result

main()