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Lec 19 Inheritance and Overloading

Assignment Updates​

Stuff due soon:

  • HW6 Due Wednesday (Files)
  • Participation due Thursday
  • Quiz due Thursday
  • Lab on Friday
  • Capstone Proposal Due Friday

Slides​

Activities​

Animal Classes Code:​

Download: Animals.py

Animals.py
class Animal:
    def __init__(self, age, height):
        self.age = age
        self.height = height

    def eat(self):
        print("I am eating")

    def sleep(self):
        print("ZzzZzzzZzz")


class Dog(Animal):
    def __init__(self, age, height, breed) -> None:
        super().__init__(age, height)
        self.breed = breed

    def bark(self):
        print("Woof!")

Overloading Code:​

Download: Overloading.py

Overloading.py
class Currency:
    def __init__(self, dollars, cents):
        self.dollars = dollars
        self.cents = cents

    def __str__(self):
        return f"${self.dollars}.{self.cents}"

    def __add__(self, other):
        dollars = self.dollars + other.dollars
        cents = self.cents + other.cents
        if cents >= 100:
            dollars += 1
            cents -= 100
        return Currency(dollars, cents)


currency_1 = Currency(5, 50)  # $5.50
currency_2 = Currency(1, 75)  # $1.75
total = currency_1 + currency_2
print(total)  # $7.25