Answer to Question #313487 in Python for HMT

Question

• Create class passenger, bus and seat. Each Seat object has three attributes, i.e., seat number, availability flag (1 if the seat is available, 0 otherwise), and an occupant (empty string is the seat is still available, otherwise a Passenger object).

• Each Passenger has a name and can purchase a Seat in a Bus. purchase_seat function needs a seat number (not a Seat object) and the Bus object. If that particular seat is available (as indicated by its availability flag), it will be assigned to that passenger. 

• Each object of Bus class is composed of 24 Seat objects. Bus object also has a ticket price per seat attribute and a total booking amount attribute. Use a loop in the constructor to create 24 Seat objects. As seats are purchased by passenger, their ticket price is added to total booking amount attribute. Bus has a display function in which each Seat object of the Bus calls display function of Seat class. 

• Create a Bus object, and two passenger objects. Both passengers try to buy seat 15

Answer 1

class Seat:
    seat_n = 0
    free = 1
    occupant = ""


    def display(self):
        if self.free == 1:
            print('Seat number %s is available' % (self.seat_n))
        else:
            print('Seat number %s is unavailable and occupied by %s' % (self.seat_n, self.occupant))



class Bus:
    booking = 0
    price = 15
    seats = [Seat() for x in range(24)]
    for x in range(24):
         seats[x].seat_n = x+1


    def display(self):
        for x in range(24):
            self.seats[x].display()
        


class Passenger:
    name = ""


    def purchase_seat(self, seat_n, bus):
        if bus.seats[seat_n].free == 1:
            bus.seats[seat_n].free = 0
            bus.seats[seat_n].occupant = self.name
            bus.booking += bus.price
            print('Seat number %s is now occupied by %s' % (seat_n, self.name))
        else:
            print('Seat number %s is already occupied by %s' % (seat_n, bus.seats[seat_n].occupant))


bus = Bus()


pas1 = Passenger()
pas1.name = "Bob"


pas2 = Passenger()
pas2.name = "Jim"


pas1.purchase_seat(15,bus)
pas1.purchase_seat(15,bus)


bus.display()
print(bus.booking)