Can you give an example of a situation where polymorphism is used in object-oriented programming?

Polymorphism in OOP allows objects of different classes to use the same interface but implement it differently. For example, we have a base class Animal with a method make_sound(). Derived classes Dog and Cat implement this method in their own way:

class Animal:
    def make_sound(self):
        pass

class Dog(Animal):
    def make_sound(self):
        return "Woof"

class Cat(Animal):
    def make_sound(self):
        return "Meow"

animals = [Dog(), Cat()]
for animal in animals:
    print(animal.make_sound())

Here, the same call to make_sound() for different objects results in different outputs — this is polymorphism.