Python Code plz

# Given Code

class AD(dict):

def __init__(self, *args, **kwargs):

"""This initializer simply passes all arguments to dict, so that

we can create an AD with the same ease with which we can create

a dict. There is no need, indeed, to repeat the initializer,

but we leave it here in case we want to create attributes specific

to an AD later."""

super().__init__(*args, **kwargs)

def __add__(self, other):

return AD._binary_op(self, other, lambda x, y: x + y, 0)

def __sub__(self, other):

return AD._binary_op(self, other, lambda x, y: x - y, 0)

@staticmethod

def _binary_op(left, right, op, neutral):

r = AD()

l_keys = set(left.keys()) if isinstance(left, dict) else set()

r_keys = set(right.keys()) if isinstance(right, dict) else set()

for k in l_keys | r_keys:

# If the right (or left) element is a dictionary (or an AD),

# we get the elements from the dictionary; else we use the right

# or left value itself. This implements a sort of dictionary

# broadcasting.

l_val = left.get(k, neutral) if isinstance(left, dict) else left

r_val = right.get(k, neutral) if isinstance(right, dict) else right

r[k] = op(l_val, r_val)

return r

class Pantry(AD):

def __init__(self, ingredients):

"""We initialize the Pantry class by passing the

ingredients that were passed in to the initializer

for the superclass, AD"""

super().__init__(ingredients)

class Recipe:

def __init__(self, name, ingredients):

"""We initialize the Recipe class, which stores the

name of a recipe as well as the needed ingredients

in the form of an AD"""

self.name = name

self.ingredients = AD(ingredients)

def __repr__(self):

"""To have a better representation of the recipe"""

return f'{self.name}: {self.ingredients}'

def __hash__(self):

"""Allows us to use a Recipe object inside a set or as

a dictionary key. We assume that each recipe will have

a unique name, and therefore we can simply use the built-in

hash function on the name and return it as the hash id."""

return hash(self.name)

def __eq__(self,other):

"""For a recipe to equal another, their name and ingredients

must match"""

return self.name == other.name and dict(self.ingredients) == dict(other.ingredients)

def individually_feasible(self, recipes):

"""Returns a list of recipes that could be

individually made using the ingredients in the pantry.

Can be implemented in 9 lines of code."""

# create an empty output list

feasible_recipe = []

# loop over the recipes list

for recipe in recipes:

allPresent = True # set the flag to True at the beginning

# loop over the ingredients of the recipe

for key in recipe.ingredients:

# if ingredient is not in Pantry or quantity of ingredient in Pantry < quantity of ingredient required in Recipe

if key not in self or self[key] < recipe.ingredients[key]:

allPresent = False # then set allPresent to False and exit the loop

break

# if all ingredients are present in enough quantity in Pantry, insert the recipe in the output list

if allPresent:

feasible_recipe.append(recipe)

return feasible_recipe # return the list if recipes that could be made

raise NotImplementedError()

Pantry.individually_feasible = individually_feasible

def simul_feasible_nr(self, recipes):

"""Returns a list containing different combinations

of recipes that could be made simultaneously using

the ingredients available in the pantry."""

raise NotImplementedError

Pantry.simul_feasible_nr = simul_feasible_nr

p1 = Pantry({"egg":6, "beans":11, "rice":7, "onion": 1,

"mushrooms":1, "spinach":1, "cheese":1,

"soy sauce":1, "butter":1, "oil":2})

fried_rice = Recipe("Fried Rice", {"rice":4, "egg":2, "onion":1, "soy sauce":1, "oil":1})

rice_and_beans = Recipe("Rice and Beans", {"rice":4, "beans":4, "oil":1})

spinach_mushroom_scrambled_eggs = Recipe("Spinach-Mushroom Scrambled Eggs",

{"egg":4, "mushrooms":1, "spinach":0.2, "cheese":1, "butter":1})

watermelon = Recipe("Watermelon", {"watermelon":1})

p1_simul_feasible_nr = p1.simul_feasible_nr([fried_rice, rice_and_beans, spinach_mushroom_scrambled_eggs, watermelon])

for collection in p1_simul_feasible_nr:

print("Recipe(s) that can be made simultaneously:")

for recipe in collection:

print(" * {}".format(recipe.name))

print("")

Transcribed Image Text:

Arithmetic Dictionaries In this assignment, we will be using the arithmetic dictionary class shown during lecture: class AD(dict): def _init_(self, *args, **kwargs): """This initializer simply passes all arguments to dict, so that we can create an AD with the same ease with which we can create a dict. There is no need, indeed, to repeat the initializer, but we leave it here in case we want to create attributes specific to an AD later.""" super().__init__(*args, **kwargs) def _add_(self, other): return AD._binary_op (self, other, lambda x, y: x + y, 0) def __sub_(self, other): return AD._binary_op (self, other, lambda x, y: xy, 0) @staticmethod def _binary_op(left, right, op, neutral): r = AD() 1_keys r_keys = = set (left.keys()) if isinstance (left, dict) else set() set (right.keys()) if isinstance (right, dict) else set() for k in 1 keys | r_keys: # If the right (or left) element is a dictionary (or an AD), # we get the elements from the dictionary; else we use the right # or left value itself. This implements a sort of dictionary # broadcasting. 1_val = r_val r[k] return r = = left.get(k, neutral) if isinstance (left, dict) else left right.get(k, neutral) if isinstance (right, dict) else right op (1 val, r_val) For the first three problems, we will be writing methods to extend the Pantry class, defined below, that holds cooking ingredients. Notice that Pantry is a subclass of AD. Additionally, we will be using a Recipe class that specifies the ingredients that are required to make a dish. Arithmetic Dictionaries In this assignment, we will be using the arithmetic dictionary class shown during lecture: class AD(dict): def _init_(self, *args, **kwargs): """This initializer simply passes all arguments to dict, so that we can create an AD with the same ease with which we can create a dict. There is no need, indeed, to repeat the initializer, but we leave it here in case we want to create attributes specific to an AD later.""" super().__init__(*args, **kwargs) def _add_(self, other): return AD._binary_op (self, other, lambda x, y: x + y, 0) def __sub_(self, other): return AD._binary_op (self, other, lambda x, y: xy, 0) @staticmethod def _binary_op(left, right, op, neutral): r = AD() 1_keys r_keys = = set (left.keys()) if isinstance (left, dict) else set() set (right.keys()) if isinstance (right, dict) else set() for k in 1 keys | r_keys: # If the right (or left) element is a dictionary (or an AD), # we get the elements from the dictionary; else we use the right # or left value itself. This implements a sort of dictionary # broadcasting. 1_val = r_val r[k] return r = = left.get(k, neutral) if isinstance (left, dict) else left right.get(k, neutral) if isinstance (right, dict) else right op (1 val, r_val) For the first three problems, we will be writing methods to extend the Pantry class, defined below, that holds cooking ingredients. Notice that Pantry is a subclass of AD. Additionally, we will be using a Recipe class that specifies the ingredients that are required to make a dish.

Answer rating: 100% (QA)

Answer Thank you for providing the code for the AD class Now lets define the Pantry and Recipe class... View the full answer