Text Cipher In Python

README.md

Text Cipher For Python

What is this?

This is a simple text-based cipher for python

run_code.bat

python textcipher.py

textcipher.py

from pprint import pprint

lettertocode = {"d": "a", "i": "b", "o": "c", "x": "d", "v": "e", "k": "f", "e": "g", "q": "h", "y": "i", "s": "j", "m": "k", "g": "l", "a": "m", "c": "n", "j": "o", "n": "p", "w": "q", "z": "r", "u": "s", "r": "t", "f": "u", "l": "v", "t": "w", "p": "x", "h": "y", "b": "z"}

codetoletter = {"a": "d", "b": "i", "c": "o", "d": "x", "e": "v", "f": "k", "g": "e", "h": "q", "i": "y", "j": "s", "k": "m", "l": "g", "m": "a", "n": "c", "o": "j", "p": "n", "q": "w", "r": "z", "s": "u", "t": "r", "u": "f", "v": "l", "w": "t", "x": "p", "y": "h", "z": "b"}

def encode(message):
	for item in enumerate(message):
		outputtext = ""
		try:
			outputtext += lettertocode[item[1]]
		except KeyError:
			outputtext += item[1]
	return outputtext

def decode(message):
	for item in enumerate(message):
		outputtext = ""
		try:
			outputtext += codetoletter[item[1]]
		except KeyError:
			outputtext += item[1]
	return outputtext

def userchoose():
	print("Welcome to Text Cipher")
	print("You can choose to (e)ncode, (d)ecode and (v)iew the cipher used.")
	menuchoice = input("Your Choice: ")
	menuchoice = menuchoice.lower()
	if menuchoice == "e":
		print("Your encoded message is: \n" + encode(input("Enter a message to encode: ").lower()), end="\n\n")
	elif menuchoice == "d":
		print("Your decoded message is: \n" + decode(input("Enter a message to decode: ").lower()), end="\n\n")
	elif menuchoice == "v":
		print("The cipher code is as follows (cipher on the left, output on the right)")
		pprint(codetoletter)
		print("")
	else:
		print("Invalid menu choice.", end="\n\n")
		
while True:
	userchoose()