Exercise: Polymorphism

Questions for: Polymorphism

Which of the following statements about polymorphism in Python is correct?
A:
Polymorphism is achieved through method overloading only
B:
Polymorphism is achieved through method overriding only
C:
Polymorphism is achieved through both method overloading and overriding
D:
Polymorphism is achieved through operator overloading only
Answer: C
Polymorphism in Python is achieved through both method overloading and method overriding.
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What is static polymorphism?
A:
The ability of a function to take different types of arguments
B:
The ability of an object to take on multiple forms or types at runtime
C:
The ability to define custom behavior for operators in a class
D:
The ability to resolve method calls at compile-time
Answer: D
Static polymorphism in Python, also known as compile-time polymorphism, involves resolving method calls at compile-time based on the method signatures.
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What is the purpose of the __getitem__() method in Python classes in the context of polymorphism?
A:
To define class attributes
B:
To customize the behavior when an instance is deleted
C:
To customize the behavior when an item is accessed using square brackets on an instance
D:
To create a new instance of the class
Answer: C
The __getitem__() method is used to customize the behavior when an item is accessed using square brackets on an instance, allowing for polymorphic behavior.
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How does Python achieve polymorphism through method overloading?
A:
By allowing a function to take different types of arguments
B:
By automatically resolving conflicts using the first defined method
C:
By using the C3 linearization algorithm to determine method resolution order
D:
Python does not support method overloading
Answer: D
Python does not support method overloading in the traditional sense, where multiple methods with the same name have different parameters.
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Consider the following code: 
class Vehicle:
    def drive(self):
        pass

class Car(Vehicle):
    def drive(self):
        return "Car is driving"

class Bicycle(Vehicle):
    def drive(self):
        return "Bicycle is pedaling"
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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