census.py

class Person:
    def __init__(self, name, age, favorite_foods):
        self.name = name
        self.age = age
        self.favorite_foods = favorite_foods

    def birth_year(self):
        return 2000 - self.age

    def __str__(self):
        return "Name: {} Age: {} Favorite food: {}".format(
            self.name, self.age, self.favorite_foods[0])          

people = [Person("Bill", 11, ["hotdogs", "jawbreakers"])
    , Person("Will", 11, ["broccoli"])
    , Person("Jill", 12, ["chunky puffs", "jawbreakers"])]

age_sum = 0
year_sum = 0
for person in people:
    age_sum = age_sum + person.age
    year_sum = year_sum + person.birth_year()

print("The average age is: " + str(age_sum / len(people)))
print("The average birth year is: " + str(int(year_sum) / len(people)))

print("The people polled in this census were:")
for person in people:
    print(person)