Python Inheritance MCQs

Question 1: The mechanism of designing a new class based on one or more existing classes is called:

• Overriding
• Inheritance
• Polymorphism
• None of these

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Question 2: What is overriding?

• Overriding can occur in the case of inheritance of classes.
• It is a process of redefining inherited method in child class
• It is a magic method in Python
• None of these

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Question 3: What kind of relationship exists between inherited class and base class?

• IS A
• HAS A
• Both
• None

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Question 4: What is not true about overriding in Python?

• Redefining a base class method in the inherited class is called method overriding.
• Overriding is the essential feature of object-oriented language.
• The overridden methods must have the same number of arguments as the base class method of the same name.
• All the above statements are true.

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Question 5: Instance variables and methods in the Python class are:

• Private by default
• Public by default
• Protected by default
• These terms are not applicable in Python.

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Question 6: In order to make an instance variable private should be

• prefixed by a single underscore
• prefixed by a double underscore
• having single underscore before and after the name
• having double underscore before and after the name

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Question 7: Which of the following statements is correct considering the following code?

class book:
    def __init__(self):
        self.__name="Python Programming"
        self.__price=200

b1=book()

• print(b1.__price)
• print(book.__price)
• print(_book.__price)
• print(b1._book__price)

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Question 8: Which of the following is the correct syntax of inheritance?

• class derived(class base):
• class derived(base):
• def class derived(base):
• none of the above

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