The Python Apprentice

Refactoring Aircraft

Let's return to our Aircraft class:

class Aircraft:    def __init__(self, registration, model, num_rows,                  num_seats_per_row):        self._registration = registration        self._model = model        self._num_rows = num_rows        self._num_seats_per_row = num_seats_per_row    def registration(self):        return self._registration    def model(self):        return self._model    def seating_plan(self):        return (range(1, self._num_rows + 1),                "ABCDEFGHJK"[:self._num_seats_per_row])

The design of this class is somewhat flawed, in that objects instantiated using it depend on being supplied with a seating configuration that matches the aircraft model. For the purposes of this exercise we can assume that the seating arrangement is fixed per aircraft model.

Better, and simpler, ...