ExamAdept

Which of the following is an example of method overloading?

A:

Defining a method with the same name in a class

B:

Defining a method with the same name but different parameters in a class

C:

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

D:

Defining a method with different access modifiers in a class

Answer: B

Method overloading in Python is achieved by defining a method with the same name but different parameters in a class.

📖

What is operator overloading?

A:

The ability of a function to take different types of arguments

B:

The ability of a class to inherit from multiple classes

C:

The ability of an object to take on multiple forms or types

D:

The ability to define custom behavior for operators in a class

Answer: D

Operator overloading in Python allows you to define custom behavior for operators in a class by implementing special methods like __add__(), __sub__(), etc.

📖

What is the purpose of the __len__() method in Python classes in the context of polymorphism?

A:

To define class attributes

B:

To customize the behavior when the len() function is called on an instance

C:

To access superclass attributes directly

D:

To create a new instance of the class

Answer: B

The __len__() method is used to customize the behavior when the len() function is called on an instance of the class, allowing for polymorphic behavior.

📖

How is polymorphism achieved?

A:

Through method overloading

B:

Through method overriding

C:

Through both method overloading and overriding

D:

Through the use of classes and inheritance

Answer: C

Polymorphism in Python is achieved through both method overloading (not in the traditional sense) and method overriding.

📖

Consider the following code:

class Shape:
    def area(self):
        pass

class Circle(Shape):
    def area(self, radius):
        return 3.14 * radius * radius

class Rectangle(Shape):
    def area(self, length, width):
        return length * width

What is this example illustrating?

A:

Operator overloading

B:

Method overloading

C:

Method overriding

D:

Polymorphism

Answer: C

This example illustrates method overriding, where a subclass provides a specific implementation for a method that is already defined in its superclass.

📖

Questions for: Polymorphism