Python Online MCQ Test

Are you ready to test your Python programming skills?

This Python Online MCQ Quiz Test is designed for learners, beginners, and experienced developers to evaluate and strengthen their Python knowledge.

Also See 15 Python Quizzes: each focusing on a specific topic

What’s Covered?

The quiz includes multiple-choice questions from the following key concepts:

Python Basics: Variables, data types, operators
Control Flow: Conditional statements (if, elif, else), loops (for, while), loop control statements (break, continue).
Functions: Defining and calling functions, parameters, return values, scope of variables.
Object-Oriented Programming (OOP) Concepts: Classes, objects, attributes, methods, inheritance, polymorphism (for more advanced tests).
Modules and Packages: Importing modules, using functions and classes from modules.
Error Handling: Try-except blocks.
String Manipulation: String methods, formatting.
List and Tuple Operations: Slicing, methods, comprehensions.
Dictionary Operations: Key-value pairs, methods.
Multithreading and Miscellaneous topics such as built-in functions and generators

Quiz Structure and Instructions

40 random questions will be selected from a pool of 100+ Python MCQs.
No time limit – solve at your own pace.
Each question has 4 options; choose the correct one.
1 point for every correct answer.
Score 24 or more to pass.
Each answer includes an explanation for better understanding.

Why Take This Quiz?

Whether you are preparing for interviews, exams, or coding assessments, this quiz will help you identify your strengths and highlight areas where you need improvement.

It’s also a fun way to challenge yourself and reinforce your understanding of Python programming. By the end, you’ll have a stronger grasp of Python and greater confidence to take on coding challenges.

Let’s Begin.

1. Which method is correct to convert String "welcome to python" to "Welcome To Python"

capitalize()

title()

2. What is the output of the following code?

var= "James Bond"
print(var[2::-1])

Jam

dno

maJ

dnoB semaJ

3. What is the default encoding used for strings in Python 3?

ASCII

Latin-1

UCS-2

UTF-8

4. Which of the following methods adds an element to the end of a list in Python?

insert()

add()

append()

put()

5. What will be the output of the following code

values = [10, 20, 30, 40, 50]
print(values[::2])

[10, 30, 50]

[20, 40]

[50, 30, 10]

[10, 20, 30, 40, 50]

6. What is a ‘daemon thread’ in Python multithreading?

A thread that continues to run even after the main program has exited.

A thread that can be manually stopped at any point in its execution.

A background thread that automatically terminates when the main program finishes its execution.

A thread that is created by the operating system, not by the user’s program.

7. What is the output of the following range() function

for num in range(2,-5,-1):
    print(num, end=", ")

2, 1, 0

2, 1, 0, -1, -2, -3, -4

2, 1, 0, -1, -2, -3, -4, -5

Error

8. What is the output of the following code?

data = {"name": "John", "age": 30}
print(data.get("city", "Unknown"))

John

Unknown

Error

9. What is the output of print(2 ** 2 ** 2)

222

10. How do you define an abstract method in a Python abstract base class (ABC)?

By simply declaring the method without implementation.

By using the @abstractmethod decorator from the abc module.

By setting the method body to pass.

By using the abstract keyword before the method definition.

11. Which of the following best describes a Python lambda function?

A named function defined using the def keyword.

An anonymous, small, single-expression function.

A function that can only accept one argument.

A function used exclusively for mathematical operations.

12. Select the correct output of the following String operations

str1 = "my isname isis jameis isis bond"; 
sub = "is"; 
print(str1.count(sub, 4))

13. Given the nested if-else below, what will be the value x

x = 0
a = 5
b = 5
if a > 0:
    if b < 0: 
        x = x + 5 
    elif a > 5:
        x = x + 4
    else:
        x = x + 3
else:
    x = x + 2
print(x)

14. Which of the following is used for reading lines from a file in Python?

file.read()

file.readline()

file.readall()

file.getlines()

15. Which of the following is a key difference between a thread and a process in Python?

Threads are managed by the operating system kernel, while processes are managed by the Python interpreter.

Threads have their own separate memory space, while processes share the same memory space.

Processes are better for I/O-bound tasks, while threads are better for CPU-bound tasks.

Threads share memory and resources, whereas processes have independent memory and resources.

16. What is the output of the following code?

for x in range(0.5, 5.5, 0.5):
  print(x)

[0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5]

[0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5]

Error

17. What is the output of print(10 - 4 * 2)

18. What is a Python decorator primarily used for?

To create new functions from existing ones.

To modify or extend the behavior of functions or methods without directly changing their source code.

To define private functions within a class.

To handle exceptions within a function.

19. What will be the output of the following code

aTuple = "Yellow", 20, "Red"
a, b, c = aTuple
print(a)

(‘Yellow’, 20, ‘Red’)

TyepeError

Yellow

20. Which of the following is the most Pythonic way to swap the values of two variables a and b?

temp = a; a = b; b = temp

a, b = b, a

a = a + b; b = a - b; a = a - b

21. When should you use the threading module instead of the multiprocessing module?

When a task is computationally intensive (CPU-bound).

When a task involves frequent I/O operations (I/O-bound).

When you need to share large amounts of data between workers without complex synchronization.

When you want to take advantage of multiple CPU cores to run a single function in parallel.

22. What is the primary purpose of the yield keyword in Python?

To immediately return a value from a function and terminate its execution.

To pause function execution and return a value, allowing it to resume later.

To stop function execution

To handle exceptions.

23. What is a key characteristic of a Python generator function?

It uses the return keyword multiple times.

It stores all its results in memory before returning them.

It uses the yield keyword to produce a sequence of values lazily.

It can only be called once.

24. Select all correct ways to copy a dictionary in Python

dict2 = dict1.copy()

dict2 = dict(dict1)

dict2 = dict1

Both A and B

All of the above

25. What will be the output of the following code

s = {1, 2, 3, 2}
print(len(s))

Error

26. Which of the following statements about Python’s Global Interpreter Lock (GIL) is true?

It allows multiple threads to execute Python bytecode in parallel.

It prevents multiple threads from executing Python bytecode concurrently within the same process.

It only affects I/O-bound operations.

It is removed in Python 3.9 and later versions.

27. What is the output of the following code?

var1 = 1
var2 = 2
var3 = "3"

print(var1 + var2 + var3)

123

Error

28. What is the output of the following code?

my_list = [1, 2, 3, 4, 5]
new_list = [x * 2 for x in my_list if x % 2 == 1]
print(new_list)

[2, 6, 10]

[2, 4, 6, 8, 10]

Error

[1, 2, 3, 4, 5]

29. What is the primary purpose of multithreading in a Python program?

To increase the speed of CPU-bound tasks.

To allow the program to perform multiple I/O-bound tasks concurrently.

To distribute a program’s workload across multiple CPU cores.

To provide better memory management for large datasets.

30. What will be the output of the following code

s = {1, 'PYnative', ('abc', 'xyz'), 'abc'} 
print(s)

Error

{1, ‘PYnative’, (‘abc’, ‘xyz’), ‘abc’}

{1, ‘PYnative’, (‘abc’, ‘xyz’)}

31. What will be the output of print(10 - 4 * 2)

Error

32. Which of the following is the correct way to import only the pi constant from the math module?

import math.pi

from math import pi

import pi from math

All of the above

33. What is the output of the following code, considering argument passing?

def modify_list(lst):
    lst.append(4)
    lst = [5, 6]

my_list = [1, 2, 3]
modify_list(my_list)
print(my_list)

[1, 2, 3, 4]

[5, 6]

[1, 2, 3, 4, 5, 6]

Error

34. Which operator has higher precedence in the following list

% (Modulus)

& (BitWise AND)

** (Exponent)

> (Comparison)

35. What will be the output of the following Python code?

sentence = "Joy Joy Joy"
sentence.replace("Joy", "Bliss", 2)
print(sentence)

Joy Joy Joy

Joy Bliss Joy

Bliss Bliss Joy

Joy Joy Bliss

36. Which of the following describes a ‘race condition’?

A situation where multiple threads are competing for CPU time to perform calculations.

An error that occurs when a thread attempts to access a resource that has been locked by another thread.

A bug where the behavior of a program depends on the unpredictable timing of multiple threads accessing a shared resource.

A feature of Python’s threading module that ensures threads run in a specific order.

37. What is the output of the following code?

x = 5
print(eval('x + 3'))

x + 3

‘x + 3’

Error

38. What is the output of the following code?

my_list = ["apple", "banana", "cherry", "date", "elderberry"]
my_slice = my_list[-2:]
print(my_slice)

[‘date’, ‘elderberry’]

[‘date’, ‘cherry’, ‘banana’, ‘apple’]

[‘date’, ‘banana’]

[‘date’]

39. What does the *args and **kwargs syntax represent in Python function definitions?

They are used for unpacking lists and dictionaries respectively.

*args collects positional arguments into a tuple, **kwargs collects keyword arguments into a dictionary.

They are used for mandatory arguments in a function.

*args denotes required arguments, **kwargs denotes optional arguments.

40. What is the purpose of the pass statement in Python?

It acts as a comment.

It skips the current iteration of a loop.

It is a null operation; nothing happens when it executes.

It terminates the program.

Python Online MCQ Test

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