Overriding Parent Class Methods - Learn to program with Python

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Overriding parent class methods #

Child classes can override methods inherited from the parent class by redefining them with the same name. This allows child classes to modify the behavior of the inherited method to suit their specific needs.

Let's take a look at an example from the previous lesson:

class Animal:
    alive = True

    def __init__(self, name):
        self.name = name

    def eat(self):
        print(f"The animal {self.name} is eating")

class Dog(Animal):
    def eat(self):
        print(f"The dog named {self.name} is eating")

In the example above, the Dog class has its own eat() method. And when we call this method from Dog objects, it will call the eat() method from the Dog class instead of the Animal class.

bird = Animal("Bird")
dog = Dog("Clark")
bird.eat() # The animal Bird is eating
dog.eat() # The dog named Clark is eating

Exercise #

Define the __str__ method in our MyUpperStr class to return the text in all uppercase instead of the original text value. You can use the upper() method for this challenge.

Tests #

print(MyStr("Python is awesome!")) should print the message "Python is awesome!"
print(MyUpperStr("Python is awesome!")) should print the message "PYTHON IS AWESOME!"

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