ExamAdept

Which of the following is an example of polymorphism through function overloading?

A:

Defining a function with the same name but different parameters in a module

B:

Defining a function with the same name but different return types in a module

C:

Defining a function with the same name in a module

D:

Defining a function with different access modifiers in a module

Answer: A

Polymorphism through function overloading in Python involves defining a function with the same name but different parameters in a module.

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Consider the following code:

class Book:
    def __init__(self, title, author):
        self.title = title
        self.author = author

    def __eq__(self, other):
        return self.title == other.title and self.author == other.author

What concept is demonstrated in this code?

A:

Method overloading

B:

Operator overloading

C:

Method overriding

D:

Polymorphism

Answer: B

This code demonstrates operator overloading using the __eq__() method to customize the behavior of the equality operator (==) for instances of the class.

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In Python, what is operator overloading?

A:

Defining multiple methods with the same name but different parameters in a class

B:

Overriding a method in a subclass with the same name as in the superclass

C:

Defining custom behavior for operators in a class

D:

Defining a method with the same name but different return types in a class

Answer: C

Operator overloading in Python involves defining custom behavior for operators in a class, such as using methods like __add__() for the + operator.

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How is polymorphism related to the concept of "duck typing"?

A:

Polymorphism in Python is based on the idea of explicitly specifying data types

B:

"Duck typing" refers to the ability of objects to take on multiple forms, which is a form of polymorphism

C:

Polymorphism in Python is achieved through static typing

D:

"Duck typing" refers to the use of explicit type declarations in Python

Answer: B

"Duck typing" in Python refers to the ability of objects to take on multiple forms or types based on their behavior, aligning with the concept of polymorphism.

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Consider the following code:

class Animal:
    def sound(self):
        pass

class Dog(Animal):
    def sound(self):
        return "Woof!"

class Cat(Animal):
    def sound(self):
        return "Meow!"

What concept is demonstrated in this code?

A:

Method overloading

B:

Method overriding

C:

Operator overloading

D:

Polymorphism

Answer: B

This code demonstrates method overriding, where the subclasses provide specific implementations for a method defined in the superclass.

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Questions for: Polymorphism