ExamAdept

What is the purpose of the __str__() method in Python classes?

A:

To define class attributes

B:

To create a new instance of the class

C:

To represent the object as a human-readable string

D:

To access superclass attributes directly

Answer: C

The __str__() method is used to provide a human-readable string representation of the object.

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How does Python handle method resolution in the presence of diamond inheritance conflicts?

A:

By automatically resolving conflicts using the first defined method

B:

By raising an error and requiring explicit resolution using super()

C:

By using the C3 linearization algorithm to determine method resolution order

D:

Diamond inheritance conflicts are not allowed in Python

Answer: C

Python uses the C3 linearization algorithm to determine the method resolution order in the presence of diamond inheritance conflicts.

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Consider the following code:

class Person:
    def __init__(self, name, age):
        self.name = name
        self.age = age

class Employee(Person):
    def __init__(self, name, age, employee_id):
        super().__init__(name, age)
        self.employee_id = employee_id

What is the primary advantage of using super().__init__(name, age) in the Employee class constructor?

A:

To call the constructor of the Employee class

B:

To create a new instance of the Person class

C:

To initialize attributes of the Person class in the Employee class

D:

To access superclass attributes directly

Answer: C

super().__init__(name, age) is used to call the constructor of the superclass Person and initialize the name and age attributes.

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In Python, what is the purpose of the __repr__() method in a class?

A:

To define class attributes

B:

To create a new instance of the class

C:

To represent the object as a string for debugging

D:

To access superclass attributes directly

Answer: C

The __repr__() method is used to provide a string representation of the object, often for debugging purposes.

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What is the purpose of the __call__() method in a Python class?

A:

To create a new instance of the class

B:

To define class attributes for the class

C:

To customize the behavior when an instance of the class is called

D:

To access superclass attributes directly

Answer: C

The __call__() method in a class is used to customize the behavior when an instance of the class is called, allowing instances to be callable.

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Questions for: Inheritance