Cifrado Kamasutra

#Cifrado Kamasutra en Python - Sanko
#Reto UDT - Cifrado Kamasutra

# -*- coding: utf-8 -*- 
from random import randint
from string import maketrans

class cif_Kamasutra():
	
	def __init__(self):
		self.text = raw_input("Write the text to encode|> ")
		self.text = self.text.upper()
		self._gen_alfabeto()
		
	def _gen_alfabeto(self):
		#This func has been coded by Pink
		self.alfabeto = ['A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z']
		letra1=""
		letra2=""
		self.retorno=""
		
		for n in range(len(self.alfabeto)):
			ram = randint(0,len(self.alfabeto)-1)
			letra1 = self.alfabeto[ram]
			letra2 = self.alfabeto[n]
			self.alfabeto[n] = letra1
			self.alfabeto[ram] = letra2
			
		for n in range(len(self.alfabeto)):
			self.retorno+=self.alfabeto[n]
		
		#extra code
		print "\nDict: %s"% self.retorno
		self.new_alphabet = self.retorno[::-1]

		self.__encode()
		self.__decode()
		
	def __encode(self):
		self.encoded = maketrans(self.retorno, self.new_alphabet)
		self.final_str = self.text.translate(self.encoded)
		print "Encoded: ", self.text.translate(self.encoded)
		
	def __decode(self):
		decoded = maketrans(self.new_alphabet, self.retorno)
		print "Decoded: ", self.final_str.translate(decoded)
		

cif_Kamasutra()