def mapOut(self, input):
inputIndex = Alphabet.index(input)
outputIndex = (inputIndex - self.offset) % Alphabet.length()
return Alphabet[outputIndex]
def advance(self):
self.offset += 1
self.offset = self.offset % Alphabet.length()
return super().advance()
def mapIn(self, input):
inputIndex = Alphabet.index(input)
outputIndex = (inputIndex - self.setting) % Alphabet.length()
return Alphabet[outputIndex]
