GATE DA Python OOP, Modules & Exception Handling

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

Questions 21-25 of 100

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Question 21

MCQ · Single Correct 1 mark

In Python, what is a primary use case of @staticmethod?

A To enforce strict private access control on methods. B To override parent class methods automatically. C To enable multi-threading on class calls. D To create utility functions inside a class namespace that do not need access to instance (`self`) or class (`cls`).

Question 22

NAT · Numerical Answer 1 mark

PYTHON

What is the value printed?
class Tracker:
    data = []
    def add(self, val):
        self.data.append(val)

t1 = Tracker()
t2 = Tracker()
t1.add(10)
t2.add(20)
print(len(Tracker.data))

Enter your numerical answer

Question 23

MCQ · Single Correct 1 mark

What occurs if a class definition contains multiple __init__ methods?

A The last defined `__init__` overwrites all previous definitions. B Python raises a SyntaxError at compile time. C Python overloads `__init__` based on parameter signature. D All `__init__` methods are executed in sequence upon instantiation.

Question 24

NAT · Numerical Answer 1 mark

PYTHON

Evaluate the output:
class Foo:
    def __init__{self, a}:
        self.a = a
    def __add__{self, other}:
        return Foo(self.a + other.a)

f1 = Foo(10)
f2 = Foo(20)
f3 = f1 + f2
print(f3.a)

Enter your numerical answer

Question 25

MCQ · Single Correct 1 mark

PYTHON

What is the output of the following Python code?
class A:
    pass

a = A()
a.x = 5
delattr(A, 'x') if hasattr(A, 'x') else None
print(a.x)

A 0 B 5 C AttributeError D None