GATE DA Python OOP, Modules & Exception Handling | Set 1

Questions 16-20 of 100

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Question 16

NAT · Numerical Answer 1 mark

PYTHON

What is the output of the following Python code?
class A:
    def __init__{self, x}:
        self.x = x

list_of_objs = [A(i) for i in range(1, 6)]
print(sum(obj.x for obj in list_of_objs))

Enter your numerical answer

Question 17

MCQ · Single Correct 1 mark

What is the purpose of @classmethod decorator in Python?

A It prevents the method from being overridden in child classes. B It defines a method that takes `cls` as first argument and operates on class state rather than instance state. C It converts an instance method into a static utility function with no arguments. D It automatically initializes all instance attributes.

Question 18

NAT · Numerical Answer 1 mark

PYTHON

What is the output of the following code?
class Math:
    @staticmethod
    def add(a, b):
        return a + b
    @classmethod
    def double_add(cls, a, b):
        return cls.add(a, b) * 2

print(Math.double_add(3, 4))

Enter your numerical answer

Question 19

MCQ · Single Correct 1 mark

PYTHON

What is the output of the following code?
class Base:
    @classmethod
    def identify(cls):
        return cls.__name__

class Derived(Base):
    pass

print(Derived.identify())

A AttributeError B Base C Derived D type

Question 20

NAT · Numerical Answer 1 mark

PYTHON

Consider the following Python code:
class Item:
    rate = 1.1
    def __init__{self, price}:
        self.price = price
    def total(self):
        return int(self.price * Item.rate)

i = Item(100)
i.rate = 1.5
print(i.total())

Enter your numerical answer