Question

Use your Food class, utilities code, and sample data from Lab 1 to complete the following Tasks.

def average_calories(foods):
    """
    -------------------------------------------------------
    Determines the average calories in a list of foods.
    foods is unchanged.
    Use: avg = average_calories(foods)
    -------------------------------------------------------
    Parameters:
        foods - a list of Food objects (list of Food)
    Returns:
        avg - average calories in all Food objects of foods (int)
    -------------------------------------------------------
    """

your code

here is the data

Ravioli, 7, False, 246

here is the Food class page

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.
        -------------------------------------------------------
        """
        string = ""

        for i in range(len(Food.ORIGIN)):
            string += """{:2d} {}
""".format(i, Food.ORIGIN[i])
        return string
      
      
      

        # your code here

        return string

    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)
        -------------------------------------------------------
        """
        string = """Name:       {}
Origin:     {}
Vegetarian: {}
Calories:   {}""".format(self.name, Food.ORIGIN[self.origin], self.is_vegetarian, self.calories)

        # your code here

        return string

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

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

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

Answer 1

def average_calories(foods):
"""
-------------------------------------------------------
Determines the average calories in a list of foods.
foods is unchanged.
Use: avg = average_calories(foods)
-------------------------------------------------------
Parameters:
foods - a list of Food objects (list of Food)
Returns:
avg - average calories in all Food objects of foods (int)
-------------------------------------------------------
"""
totalCalories=0
for food in foods:
totalCalories+=food.calories
return totalCalories//len(foods)