# Cipher

import simplegui

CIPHER = {'a': 'x', 'b': 'c', 'c': 'r', 'd': 'm', 'e': 'l'}

message = ""

# Encode button

def encode():

emsg = ""

for ch in message:

emsg += CIPHER[ch]

print message, "encodes to", emsg

# Decode button

def decode():

dmsg = ""

for ch in message:

for key, value in CIPHER.items():

if ch == value:

dmsg += key

print message, "decodes to", dmsg

# Update message input

def newmsg(msg):

global message

message = msg

label.set_text(msg)

# Create a frame and assign callbacks to event handlers

frame = simplegui.create_frame("Cipher", 2, 200, 200)

frame.add_input("Message:", newmsg, 200)

label = frame.add_label("", 200)

frame.add_button("Encode", encode)

frame.add_button("Decode", decode)

# Start the frame animation

frame.start()