Question

USE!! PYTHON!!!

Programming:   Pizza

1. Write a Pizza class to that this client code works. Please note that it is ok if the toppings are listed in a different order.

>>> pie = Pizza()

>>> pie

Pizza('M',set())

>>> pie.setSize('L')

>>> pie.getSize()

'L'

>>>pie.addTopping('pepperoni')

>>>pie.addTopping('anchovies')

>>>pie.addTopping('mushrooms')

>>> pie

Pizza('L',{'anchovies', 'mushrooms', 'pepperoni'})

>>>pie.addTopping('pepperoni')

>>> pie

Pizza('L',{'anchovies', 'mushrooms', 'pepperoni'})

>>>pie.removeTopping('anchovies')

>>> pie

Pizza('L',{'mushrooms', 'pepperoni'})

>>> pie.price()

16.65

>>> pie2 = Pizza('L',{'mushrooms','pepperoni'})

>>> pie2

Pizza('L',{'mushrooms', 'pepperoni'})

>>> pie==pie2

True

The Pizza class should have two attributes(data items):

size – a single character str, one of ‘S’,’M’,L”

toppings – a set containing the toppings. If you don’t remember how to use a set, make sure you look it up in the book. Please note that toppings may be listed in a different order, but hw2TEST.py takes that into account.

The Pizza class should have the following methods/operators):

__init__ - constructs a Pizza of a given size (defaults to ‘M’) and with a given set of toppings (defaults to empty set).    I highly recommend you look at the Queue class in the book to see how to get this to work correctly.

setSize – set pizza size to one of ‘S’,’M’or ‘L’

getSize – returns size

addTopping – adds a topping to the pizza, no duplicates, i.e., adding ‘pepperoni’ twice only adds it once

removeTopping – removes a topping from the pizza

price – returns the price of the pizza according to the following scheme:

‘S’: $6.25 plus 70 cents per topping
‘M’: $9.95 plus $1.45 per topping
‘L’: $12.95 plus $1.85 per topping

__repr__ - returns representation as a string – see output sample above. Note that toppings may be listed in a different order.

__eq__ - two pizzas are equal if they have the same size and same toppings (toppings don’t need to be in the same order)

2. Write a function orderPizza that allows the user input to build a pizza. It then prints a thank you message, the cost of the pizza and then returns the Pizza that was built.

>>> orderPizza()

Welcome to Python Pizza!

What size pizza would you like (S,M,L): M

Type topping to add (or Enter to quit): mushroom

Type topping to add (or Enter to quit): onion

Type topping to add (or Enter to quit): garlic

Type topping to add (or Enter to quit):

Thanks for ordering!

Your pizza costs $14.299999999999999

Pizza('M',{'mushroom', 'onion', 'garlic'})

>>> orderPizza()

Welcome to Python Pizza!

What size pizza would you like (S,M,L): L

Type topping to add (or Enter to quit): calamari

Type topping to add (or Enter to quit): garlic

Type topping to add (or Enter to quit):

Thanks for ordering!

Your pizza costs $16.65

Pizza('L',{'garlic', 'calamari'})

>>> p=orderPizza()

Welcome to Python Pizza!

What size pizza would you like (S,M,L): S

Type topping to add (or Enter to quit):

Thanks for ordering!

Your pizza costs $6.25

>>> p

Pizza('S',set())

>>>