answer2 = input('do you want to encode or decode?')

if answer2 == 'decode':

        Str = input ('enter the message to decode');

        Str = Str.encode('codecs.encode(64)','strict');

        print ("Decoded String: " + Str.decode('codecs.encode(64)','strict'))

    if answer2 == 'encode':

        Str = input("enter the message to encode");

        Str = Str.encode('codecs.encode(64)','strict');

        print ("Encoded String: " + Str)