This is all done in python.

1. Complete the origins method for the Food module.

2. Complete the __str__ method for the Food module.

Food.py:

^{class Food: """ Defines an object for a single food: name, origin, vegetarian, calories. """ # Constants ORIGIN = ("Canadian", "Chinese", "Indian", "Ethiopian", "Mexican", "Greek", "Japanese", "Italian", "American", "Scottish", "New Zealand", "English")}

^{@staticmethod def origins(): """ ------------------------------------------------------- Creates a string list of food origins in the format: 0 Canadian 1 Chinese 2 Indian ... Use: s = Food.origins() Use: print(Food.origins()) ------------------------------------------------------- Returns: string - A numbered list of valid food origins (str) ------------------------------------------------------- """}

^{# your code here}

^return

^{def __init__(self, name, origin, is_vegetarian, calories): """ ------------------------------------------------------- Initialize a food object. Use: f = Food( name, origin, is_vegetarian, calories ) ------------------------------------------------------- Parameters: name - food name (str) origin - food origin (int) is_vegetarian - whether food is vegetarian (boolean) calories - caloric content of food (int >= 0) Returns: A new Food object (Food) ------------------------------------------------------- """ assert origin in range(len(Food.ORIGIN)), "Invalid origin ID" assert is_vegetarian in (True, False, None), "Must be True or False" assert calories is None or calories >= 0, "Calories must be >= 0"}

^{self.name = name self.origin = origin self.is_vegetarian = is_vegetarian self.calories = calories return}

^{def __str__(self): """ ------------------------------------------------------- Creates a formatted string of food data. Use: print(f) Use: s = str(f) ------------------------------------------------------- Returns: string - the formatted contents of food (str) ------------------------------------------------------- """}

^{# your code here}

^return

^{def __eq__(self, target): """ ------------------------------------------------------- Compares this food against another food for equality. Use: f == target ------------------------------------------------------- Parameters: target - [right side] food to compare to (Food) Returns: result - True if name and origin match, False otherwise (boolean) ------------------------------------------------------- """ result = (self.name.lower(), self.origin) == ( target.name.lower(), target.origin) return result}

^{def __lt__(self, target): """ ------------------------------------------------------- Determines if this food comes before another. Use: f < target ------------------------------------------------------- Parameters: target - food to compare to (Food) Returns: result - True if food precedes target, False otherwise (boolean) ------------------------------------------------------- """ result = (self.name.lower(), self.origin) < \ (target.name.lower(), target.origin) return result}

^{def __le__(self, target): """ ------------------------------------------------------- Determines if this food precedes or is or equal to another. Use: f <= target ------------------------------------------------------- Parameters: target - [right side] food to compare to (Food) Returns: result - True if this food precedes or is equal to target, False otherwise (boolean) ------------------------------------------------------- """ result = self < target or self == target return result}

^{def write(self, file_variable): """ ------------------------------------------------------- Writes a single line of food data to an open file. Use: f.write(file_variable) ------------------------------------------------------- Parameters: file_variable - an open file of food data (file) Returns: The contents of food are written as a string in the format name|origin|is_vegetarian to file_variable. ------------------------------------------------------- """ print("{}|{}|{}|{}" .format(self.name, self.origin, self.is_vegetarian, self.calories), file=file_variable) return}

^{def key(self): """ ------------------------------------------------------- Creates a formatted string of food key data. Use: key = f.key() ------------------------------------------------------- Returns: the formatted contents of food key (str) ------------------------------------------------------- """ return "{}, {}".format(self.name, self.origin)}

^{def __hash__(self): """ ------------------------------------------------------- Generates a hash value from a food name. Use: h = hash(f) ------------------------------------------------------- Returns: value - the total of the characters in the name string (int > 0) ------------------------------------------------------- """ value = 0}

^{for c in self.name: value = value + ord(c) return value}