# Code cell 17
class Elevator:

    def __init__(self, floor_numbers, floor_types):
        self._floor_numbers = floor_numbers
        self._floor_types = floor_types
        self._number_to_type_dict = dict(zip(floor_numbers, floor_types))
        self._type_to_number_dict = dict(zip(floor_types, floor_numbers))

    def ask_which_floor(self, floor_type):
        if floor_type in self._floor_types:
            print('The {} floor is the number: {}.'.format(floor_type, self._type_to_number_dict[floor_type]))
        else:
            print('There is no {} floor in this building.'.format(floor_type))

    def go_to_floor(self, floor_number):
        if floor_number in self._floor_numbers:
            print('Going to {} floor .'.format(self._number_to_type_dict[floor_number]))
        else:
            print('There is floor number {} in this building.'.format(floor_number))

floor_types = ['Parking', 'Shops', 'Food Court', 'Offices']
floor_numbers = range(-1, 4)

el = Elevator(floor_numbers, floor_types)

el.go_to_floor(1)

el.go_to_floor(-2)

el.ask_which_floor('Offices')

el.ask_which_floor('Swimming Pool')