Polymorphism in Object-Oriented Programming allows methods to do different things based on the object it is acting upon, even if they share the same name. It lets one interface be used for a general class of actions, making code more flexible and reusable.

Imagine you have a book class with a method called “summary()”. If you create two types of books, “novel” and “biography”, each type can have its own version of “summary()”. When you use the “summary()” method on a book, it will show the right summary based on whether the book is a “novel” or a “biography”. Even though you use the same method name, it does different things depending on the type of book.

class Book:
  def summary(self):
    return "This is a book."

class Novel(Book):
  def summary(self):
    return "This is a fictional story."

class Biography(Book):
  def summary(self):
    return "This is a real-life story."

novel = Novel()
biography = Biography()

print(novel.summary())
print(biography.summary())