Free Printable Quiz3-OOP-MakScie

1.

What will be the output of the above code?

class A:

def show(self):

print("Class A")

class B(A):

pass

obj = B()

obj.show()

a)

Error

b)

Class A

c)

None

d)

No output

2.

What is the value of b.value after executing the above code?

class A:

def init(self):

self.value = 10

class B(A):

def init(self):

super().__init__()

self.value += 5

b = B()

print(b.value)

a)

15

b)

10

c)

20

d)

0

3.

What is the output of the above code?

class Parent:

name = "Parent"

class Child(Parent):

name = "Child"

c = Child()

print(c.name)

a)

Parent

b)

Child

c)

Error

d)

None

4.

Consider the following code: class A:

def greet(self):

print("Hello from A")

class B(A):

def greet(self):

print("Hello from B")

class C(B):

pass

obj = C()

obj.greet()

a)

Hello from A

b)

Hello from B

c)

Error

d)

None

5.

What will be the output?

class X:

def init(self):

print("X")

class Y(X):

def init(self):

super().__init__()

print("Y")

Y()

a)

X

b)

Y

c)

X Y

d)

Error

6.

What will be the output of the above code?

class A:

def show(self):

print("A")

class B(A):

def show(self):

super().show()

print("B")

B().show()

a)

A

b)

B

c)

A B

d)

Error

7.

What will be the output of the above code? Fill in the blank.

class A:

def init(self, x):

self.x = x

class B(A):

pass

b = B(5)

print(b.x)

(a)

8.

class A:

def show(self):

print("A")

class B(A):

def show(self):

print("B")

class C(A, B):

pass

C().show()

a)

A

b)

B

c)

Error

d)

None

9.

Given the following code: class A:

def init(self):

print("A")

class B(A):

def init(self):

print("B")

B()

What will be the output?

a)

A

b)

B

c)

A B

d)

None

10.

Given the following code: class A:

def display(self):

print("A")

class B(A):

def display(self):

super().display()

print("B")

class C(B):

def display(self):

super().display()

print("C")

C().display() What will be the output?

a)

A B C

b)

C B A

c)

A C B

d)

B A C

11.

class Car:

def start(self):

print("Starting engine")

class Electric(Car):

def start(self):

print("Powering electric motor")

obj = Electric()

obj.start()

a)

Starting engine

b)

Powering electric motor

c)

Error

d)

None

12.

class Base:

def init(self):

self.data = 100

class Derived(Base):

def init(self):

super().__init__()

self.data += 50

print(Derived().data)

(a)

13.

class A:

def info(self):

print("A info")

class B(A):

def info(self):

print("B info")

obj = B()

A.info(obj)

a)

A info

b)

B info

c)

Error

d)

None

14.

class A:

pass

class B(A):

pass

print(issubclass(B, A))

a)

True

b)

False

c)

Error

d)

None

15.

class Parent:

def init(self):

self.msg = "Hello"

class Child(Parent):

pass

print(hasattr(Child(), "msg"))

a)

True

b)

False

c)

Error

d)

None

16.

Given the following code: class Animal:

def sound(self):

print("Some sound")

class Dog(Animal):

def sound(self):

super().sound()

print("Bark")

Dog().sound()

a)

Bark

b)

Some sound Bark

c)

Error

d)

None

17.

class A:

def method(self):

print("A")

class B(A):

pass

class C(B):

pass

C().method()

a)

A

b)

B

c)

C

d)

D

18.

class A:

def display(self):

print("A")

class B(A):

def display(self):

print("B")

class C(B):

def display(self):

super(A, self).display()

C().display()

a)

A

b)

B

c)

Error

d)

None

19.

class Vehicle:

wheels = 4

class Bike(Vehicle):

wheels = 2

print(Vehicle.wheels, Bike.wheels)

a)

2 2

b)

4 2

c)

4 4

d)

Error

20.

class Parent:

x = 5

class Child(Parent):

pass

Child.x += 10

print(Parent.x)

a)

5

b)

10

c)

15

d)

Error

21.

What will be the output?

f = open("data.txt", "w")

f.write("Hello")

f.close()

f = open("data.txt", "r")

print(f.read())

a)

Hello

b)

Nothing

c)

Error

d)

data.txt

22.

What will be the output?
with open("test.txt", "w") as f:

f.write("Python")

print(f.closed)

a)

True

b)

False

c)

Error

d)

None

23.

f = open("info.txt", "w")

f.write("Data")

f.seek(0)

print(f.read()) What will be the output?

a)

Data

b)

""

c)

Error

d)

None

24.

with open("file.txt", "a") as f:

f.write("End")

print(f.mode)

a)

w

b)

a

c)

r

d)

rb

25.

f = open("log.txt", "w+")

f.write("123")

f.seek(0)

print(f.read())

a)

""

b)

123

c)

Error

d)

None

26.

f = open("data.txt", "w")

print(f.tell())

a)

0

b)

1

c)

None

d)

Error

27.

f = open("file.txt", "w")

print(f.name)

a)

file.txt

b)

file

c)

Error

d)

None

28.

f = open("data.txt", "w")

f.write("Python\nRocks")

f.close()

f = open("data.txt")

print(len(f.readlines()))

a)

1

b)

2

c)

3

d)

Error

29.

f = open("data.txt", "w")

f.write("Hi")

f.truncate(1)

f.close()

f = open("data.txt")

print(f.read())

a)

H

b)

Hi

c)

i

30.

with open("test.txt", "w") as f:

f.write("Hello\nWorld")

f.seek(0)

a)

File pointer moves to end

b)

Moves to start

c)

Error

d)

None

31.

f = open("sample.txt", "w")

print(f.readable())

a)

True

b)

False

c)

Error

d)

None

32.

with open("nums.txt", "w") as f:

f.writelines(["1\n", "2\n", "3\n"])

f = open("nums.txt")

print(f.readlines())

a)

['1\n', '2\n', '3\n']

b)

['123']

c)

Error

d)

None

33.

try:

f = open("missing.txt", "r")

except FileNotFoundError:

print("File not found")

a)

Error

b)

File not found

c)

None

d)

Empty output

34.

with open("log.txt", "w") as f:

f.write("Test")

print(f.closed)

a)

True

b)

False

c)

Error

d)

None

35.

f = open("data.txt", "wb")

print(f.mode)

a)

w

b)

wb

c)

rb

d)

Error

36.

f = open("file.txt", "w+")

print(f.writable())

a)

True

b)

False

c)

Error

d)

None

37.

with open("file.txt", "w") as f:

f.write("12345")

print(f.tell())

a)

5

b)

0

c)

1

d)

10

38.

What is the output of the following code? f = open("data.txt", "w") f.write("Hello") f.close() print(f.write("World"))

a)

0

b)

5

c)

Error

d)

None

39.

What is the output of the following code? f = open("data.txt", "w") f.write("Hello") f.flush() print("Done")

a)

Hello

b)

Done

c)

None

d)

Error

40.

What is the output of the following code? import os print(os.path.exists("test.txt"))

a)

True

b)

False

c)

Depends on file existence

d)

Error

Quiz3-OOP-MakScie

Total questions: 40

Worksheet time: 40mins

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