What is the difference between mutable and immutable objects in Python

ullistrongMutable objectsstrong can be modified after creation eg list dict setlilistrongImmutable objectsstrong cannot be changed once created eg int float str tupleliul

Python Multiple Choice Questions: Beginner to Advanced

Q: What is Pythons GIL Global Interpreter Lock

divThe GIL is a mutex that allows only one thread to execute Python bytecode at a time limiting multithreading performancenbspdiv

Q: How can you install external libraries in Python

divExternal libraries can be installed using the pip package manager eg pip install library_namediv

Q: What is the use of the pass statement in Python

divThe pass statement is a nooperation statement in Python It is used when a statement is syntactically required but no code needs to be executed such as when defining an empty function or classnbspdiv

Q: How is memory managed in Python

divPython handles memory management automatically through reference counting and garbage collection Objects are created in a private heap and the garbage collector frees up unused memory when objects are no longer in usenbspdiv

05 Mar 2025

Intermediate

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95 min read

Python is a popular programming language known for its simplicity and versatility. It is widely used in web development, data science, automation, and artificial intelligence. Practicing Python MCQs (multiple-choice questions)helps test your understanding of key topics like variables, loops, functions, and object-oriented programming in an easy and interactive way.

In this Python tutorial, let's learn the most commonly asked Python MCQs. Python MCQs with answers improve problem-solving skills and prepare you for exams and interviews. Regular practice with Python objective questions and online tests boosts confidence and understanding.

Top 100 Python MCQ Questions and Answers

Explore the top Python MCQ questions and answers to test your knowledge of key concepts like loops, functions, and object-oriented programming. These Python quiz questions help in exam preparation and improve problem-solving skills.

Q 1. Who developed Python, and when was it first released?

(a) Guido van Rossum, 1991
(b) Dennis Ritchie, 1985
(c) James Gosling, 1995
(d) Bjarne Stroustrup, 1979

Q 2. When did Python 3.0 release, and what was its major focus?

(a) 2008, backward compatibility
(b) 2000, performance improvements
(c) 2008, breaking backward compatibility
(d) 2005, multi-threading

Q 3. Who maintains Python today?

(a) Microsoft
(b) Python Software Foundation
(c) Oracle
(d) Google

Q 4. What is Python primarily known for?

(a) Low-level programming
(b) Ease of readability and simplicity
(c) Hardware programming
(d) Data compression

Q 5. What type of programming language is Python?

(a) Compiled language
(b) Interpreted language
(c) Machine language
(d) Assembly language

Q 6. What is the correct file extension for Python files?

(a) .pt
(b) .py
(c) .pyt
(d) .python

Q 7. Which of the following is a mutable data type in Python?

(a) Tuple
(b) String
(c) List
(d) Integer

Q 8. Who is responsible for Python's open-source development and maintenance?

(a) The Python Community
(b) Python Software Foundation (PSF)
(c) Guido van Rossum
(d) Open Source Initiative

Q 9. What does the term "PEP" stand for in Python development?

(a) Python Execution Protocol
(b) Python Enhancement Proposal
(c) Python Exception Processing
(d) Python Error Policy

Q 10. Which keyword is used to define a function in Python?

(a) function
(b) define
(c) def
(d) func

Q 11. What is the output of `print(type(5))` in Python?

(a) <class 'integer'>
(b) <class 'int'>
(c) int
(d) Error

Q 12. What is the correct syntax to import a module in Python?

(a) import module_name
(b) include module_name
(c) from module_name import
(d) import module_name as alias

Q 13. What will be the output of the following Python code?

 x = [1, 2, 3]
 y = x
 y[0] = 100
 print(x)

(a) [100, 2, 3]
(b) [1, 2, 3]
(c) [1, 100, 3]
(d) [100, 100, 3]

Q 14. What does the 'break' statement do in a loop in Python?

(a) Exits the loop immediately
(b) Pauses the loop
(c) Continues the loop
(d) Restarts the loop

Q 15. Which of the following is an immutable data type in Python?

(a) List
(b) Set
(c) String
(d) Dictionary

Q 18. What is the output of the following Python code?

 def foo(a, b=10):
     return a + b
 print(foo(5))

(a) 5
(b) 10
(c) 15
(d) Error

Q 19. What is the purpose of the 'pass' statement in Python?

(a) To terminate the program
(b) To skip the current iteration of a loop
(c) To define an empty function or class
(d) To raise an exception

Q 20. What does the following Python code output?

 x = [1, 2, 3, 4]
 x = x[::-1]
 print(x)

(a) [1, 2, 3, 4]
(b) [4, 3, 2, 1]
(c) [1, 4, 3, 2]
(d) Error

Q 21. Which of the following is the correct way to define a class in Python?

(a) class MyClass {}
(b) def MyClass(): pass
(c) class MyClass: pass
(d) create class MyClass:

Q 22. Which of the following statements is used to create a set in Python?

(a) set = {1, 2, 3}
(b) set = [1, 2, 3]
(c) set = (1, 2, 3)
(d) set = set(1, 2, 3)

Q 23. What is the result of the following Python code?

 x = [1, 2, 3, 4]
 x.append([5, 6])
 print(len(x))

(a) 5
(b) 6
(c) 7
(d) 8

Q 24. What does the following code print?

 x = {'a': 1, 'b': 2}
 x['c'] = 3
 print(x)

(a) {'a': 1, 'b': 2, 'c': 3}
(b) {'a': 1, 'b': 2}
(c) {'c': 3, 'a': 1, 'b': 2}
(d) Error

Q 25. What is the output of the following Python code?

 for i in range(3):
     if i == 1:
         continue
     print(i)

(a) 0 1 2
(b) 0 2
(c) 1 2
(d) Error

Q 26. What is the correct syntax to define a function in Python?

(a) def function_name[]:
(b) function function_name():
(c) def function_name():
(d) function_name(): def

Q 27. Which of the following data types is immutable in Python?

(a) List
(b) Set
(c) Dictionary
(d) Tuple

Q 28. What will be the output of the following Python code?

 def func(x, y=[]):
     y.append(x)
     return y
 print(func(10))
 print(func(20, []))
 print(func(30))

(a) [10] [20] [30]
(b) [10] [30] [30]
(c) [10] [20] [30, 10]
(d) [10, 30] [20] [30]

Q 29. What is the correct way to open a file in Python for reading?

(a) open("file.txt", "r")
(b) open("file.txt")
(c) open("file.txt", "read")
(d) open("file.txt", "w")

Q 30. How would you access the second element of the following Python list?

 my_list = [10, 20, 30, 40]

(a) my_list[2]
(b) my_list[1]
(c) my_list[0]
(d) my_list[3]

Q 31. Which of the following statements is true about Python lists?

(a) Lists are immutable
(b) Lists are ordered and mutable
(c) Lists are unordered and immutable
(d) Lists are ordered but immutable

Q 32. Which of the following is used to handle exceptions in Python?

(a) try...except
(b) catch...finally
(c) exception...handle
(d) catch...except

Q 33. What is the output of the following Python code?

def func(a, b=10):
    return a + b
print(func(5))
print(func(5, 15))

(a) 15 20
(b) 15 15
(c) 5 15
(d) 10 15

Q 34. What is the correct syntax for a lambda function in Python?

(a) lambda x: x + 2
(b) lambda x, y: return x + y
(c) lambda: x + y
(d) lambda x: return x + 2

Q 35. Which of the following is used to create a generator in Python?

(a) def function_name(): yield
(b) def function_name(): return
(c) generator function()
(d) function_name() generator

Q 36. What will be the result of the following code?

 x = 10
 def change(x):
    x = 20
    return x
 change(x)
 print(x)

(a) 10
(b) 20
(c) Error
(d) None

Q 37. Which of the following statements about Python's dictionary is false?

(a) Keys must be unique
(b) Values can be duplicate
(c) Dictionaries are ordered in Python 3.7 and above
(d) Keys can be mutable

Q 38. Which of the following statements is true about Python sets?

(a) Sets allow duplicate elements
(b) Sets are ordered collections
(c) Sets are unordered collections
(d) Sets can store only integers

Q 39. What will be the output of the following Python code?

 def func(a=5, b=10):
    return a * b
 print(func())
 print(func(2, 3))

(a) 50 6
(b) 15 15
(c) 5 30
(d) 50 30

Q 40. What does the following Python code do?

 x = [1, 2, 3]
 y = [4, 5, 6]
 z = x + y
 print(z)

(a) Merges the two lists into a single list
(b) Prints an error
(c) Creates a tuple with the two lists
(d) Concatenates the two lists into a tuple

Q 41. Which of the following is used to handle multiple exceptions in Python?

(a) except(Exception1, Exception2)
(b) except (Exception1 or Exception2)
(c) except (Exception1, Exception2) as e
(d) except (Exception1 or Exception2) as e

Q 42. What is the output of the following Python code?

 a = [1, 2, 3]
 b = a
 b[0] = 10
 print(a)

(a) [10, 2, 3]
(b) [1, 2, 3]
(c) [10, 2]
(d) [10, 2, 3, 10]

Q 43. What is the output of the following Python code?


x = {1, 2, 3, 4}
y = {3, 4, 5, 6}
z = x & y
print(z)

(a) {1, 2, 3, 4, 5, 6}
(b) {3, 4}
(c) {5, 6}
(d) {1, 2}

Q 44. What is the output of the following code?

 x = "Python"
 y = "Programming"
 z = x + " " + y
 print(z)

(a) Python Programming
(b) PythonProgramming
(c) Python + Programming
(d) Error

Q 45. What is the difference between "is" and "==" in Python?

(a) is checks for object identity, == checks for equality of values
(b) is checks for equality of values, == checks for object identity
(c) is is used for strings only
(d) == is used to compare objects, is is used for arithmetic operations

Q 46. Which method is used to add an element to a list in Python?

(a) append()
(b) insert()
(c) add()
(d) push()

Q 47. What is the output of the following Python code?

 x = [1, 2, 3]
 y = x
 y[0] = 10
 print(x)

(a) [10, 2, 3]
(b) [1, 2, 3]
(c) Error
(d) [10, 10, 10]

Q 48. What is the output of the following code?

 x = [10, 20, 30, 40]
 y = x[1:3]
print(y)

(a) [10, 20]
(b) [20, 30]
(c) [30, 40]
(d) [10, 20, 30, 40]

Q 49. What will be the output of the following Python code?

 x = "hello"
 x[0] = "H"
 print(x)

(a) Hello
(b) hello
(c) Error
(d) None

Q 50. Which of the following is a correct way to define a function in Python?

(a) function myFunction():
(b) def myFunction[]:
(c) def myFunction():
(d) function myFunction[]

Q 51. What will be the output of the following Python code?

 x = [1, 2, 3]
 y = x * 2
 print(y)

(a) [1, 2, 3, 1, 2, 3]
(b) [1, 2, 3, 2, 4, 6]
(c) [1, 2, 3]
(d) Error

Q 52. What is the purpose of the "self" keyword in Python?

(a) To reference the current class
(b) To reference the current object
(c) To create a new instance of a class
(d) To define a static method

Q 53. What will be the output of the following code?

 x = {1, 2, 3}
 y = {3, 4, 5}
 print(x & y)

(a) {1, 2, 3, 4, 5}
(b) {3}
(c) {1, 2}
(d) Error

Q 54. What will be the output of the following code?

 x = "Python"
 print(x[1:4])

(a) Pyt
(b) yth
(c) yth
(d) Python

Q 55. Which of the following Python keywords is used to define a class?

(a) def
(b) class
(c) function
(d) object

Q 56. What is the output of the following Python code?

 x = [1, 2, 3, 4]
 x.append(5)
 print(x)

(a) [1, 2, 3]
(b) [1, 2, 3, 4, 5]
(c) [1, 2, 3, 4]
(d) Error

Q 57. How can you add a comment in Python?

(a) // This is a comment
(b) # This is a comment
(c) /* This is a comment */
(d) -- This is a comment

Q 58. What is the output of the following code?

 x = "apple"
 y = x.upper()
 print(y)

(a) apple
(b) APPLE
(c) Error
(d) None

Q 59. Which of the following is the correct syntax for importing the math module in Python?

(a) import math
(b) from math import *
(c) import math()
(d) include math

Q 60. What does the `len()` function do in Python?

(a) Returns the number of items in an iterable object
(b) Returns the size of an object in bytes
(c) Returns the last element in a list
(d) None of the above

Q 61. Which of the following is the correct way to create an empty dictionary in Python?

(a) x = []
(b) x = {}
(c) x = dict()
(d) Both (b) and (c)

Q 62. What is the output of the following code?

 x = "Hello, World!"
 y = x.replace("World", "Python")
 print(y)

(a) Hello, Python!
(b) Hello, World!
(c) Error
(d) None

Q 63. What is the purpose of the `init` method in a Python class?

(a) Initialize class attributes
(b) Initialize instance attributes
(c) Define class methods
(d) Define instance methods

Q 64. Which of the following is used to handle exceptions in Python?

(a) try-except block
(b) if-else block
(c) for loop
(d) while loop

Q 65. How do you open a file in binary mode in Python?

(a) open('filename', 'b')
(b) open('filename', 'rb')
(c) open('filename', 'wb')
(d) open('filename', 'r+b')

Q 66. Which module in Python supports regular expressions?

(a) regex
(b) re
(c) reg
(d) pyreg

Q 67. What will be the output of `bool([])` in Python?

(a) True
(b) False
(c) None
(d) Error

Q 68. Which of the following is NOT a valid Python variable name?

(a) my_var
(b) _var123
(c) 123var
(d) var_1

Q 69. What does the `super()` function do in Python?

(a) Calls the parent class constructor
(b) Calls a static method
(c) Deletes an object
(d) Terminates the program

Q 70. What is the output of `type(lambda x: x)` in Python?

(a) function
(b) lambda
(c) method
(d) None of the above

Q 71. What does the `ord()` function do in Python?

(a) Converts a string to uppercase
(b) Returns the Unicode code of a character
(c) Converts a number to a string
(d) Returns the ASCII value of a number

Q 72. Which method is used to remove whitespace from the beginning and end of a string in Python?

(a) strip()
(b) trim()
(c) remove()
(d) erase()

Q 73. What will be the output of `print(2 3 2)` in Python?

(a) 64
(b) 512
(c) 8
(d) 256

Q 74. Which function is used to get the current working directory in Python?

(a) os.getcwd()
(b) os.pwd()
(c) os.cwd()
(d) os.getpwd()

Q 75. What will be the output of `print(list("python"))`?

(a) ['python']
(b) ['p', 'y', 't', 'h', 'o', 'n']
(c) ['p y t h o n']
(d) Error

Q 76. Which of the following is used to read a file line by line in Python?

(a) readlines()
(b) read()
(c) readline()
(d) Both (a) and (c)

Q 77. How do you create a tuple with a single element?

(a) (5)
(b) (5,)
(c) (5, 5)
(d) tuple(5)

Q 78. What will be the output of `sorted([3, 1, 4, 1, 5, 9], reverse=True)`?

(a) [1, 1, 3, 4, 5, 9]
(b) [9, 5, 4, 3, 1, 1]
(c) [3, 1, 4, 1, 5, 9]
(d) None of the above

Q 79. Which module is used to generate random numbers in Python?

(a) random
(b) randint
(c) math
(d) rand

Q 80. Which keyword is used to define a generator in Python?

(a) yield
(b) return
(c) generate
(d) def

Q 81. What is the difference between `is` and `==` in Python?

(a) No difference
(b) is checks identity, == checks value
(c) is checks value, == checks reference
(d) None of the above

Q 82. What will be the output of `print(0.1 + 0.2 == 0.3)`?

(a) True
(b) False
(c) Error
(d) None

Q 83. What will be the output of `print(type(lambda x: x))` in Python?

(a) function
(b) lambda
(c) class
(d) None

Q 84. Which method is used to remove an item from a dictionary by key and return its value?

(a) remove()
(b) discard()
(c) pop()
(d) del

Q 85. What will be the output of `print(bool(0), bool(1), bool(-1))`?

(a) True True True
(b) False True True
(c) False False True
(d) True False False

Q 86. What is the output of `print('Python'.replace('y', 'i'))`?

(a) Pithon
(b) Python
(c) Pithin
(d) Pithoni

Q 87. Which of the following data structures supports key-value pairs?

(a) List
(b) Tuple
(c) Dictionary
(d) Set

Q 88. What will be the output of `print(2 3 2)`?

(a) 512
(b) 64
(c) 256
(d) 8

Q 89. Which Python function is used to get the ASCII value of a character?

(a) ord()
(b) chr()
(c) ascii()
(d) ord_ascii()

Q 90. What will be the output of `bool([]), bool([0]), bool(None)`?

(a) False, False, False
(b) False, True, False
(c) True, True, False
(d) True, False, True

Q 91. What does `enumerate()` function in Python return?

(a) A dictionary
(b) A tuple containing index and value
(c) A set
(d) A single integer

Q 92. What is the primary difference between `deepcopy()` and `copy()` in Python?

(a) deepcopy() copies objects recursively
(b) copy() creates a completely new object
(c) deepcopy() is faster than copy()
(d) There is no difference

Q 93. What will be the output of `print(type(lambda x: x))`?

(a) <class 'function'>
(b) <class 'lambda'>
(c) <class 'method'>
(d) SyntaxError

Q 94. Which of the following is the correct syntax to check if a key exists in a dictionary?

(a) if key in dict
(b) if dict.has_key(key)
(c) if key.exists(dict)
(d) if key is dict

Q 95. What will be the output of `print(bool('False'))`?

(a) False
(b) True
(c) Error
(d) None

Q 96. Which of the following methods can be used to remove an element from a set in Python?

(a) remove()
(b) discard()
(c) pop()
(d) All of the above

Q 97. What is the correct way to open a file in Python for both reading and writing?

(a) open('file.txt', 'rw')
(b) open('file.txt', 'r+')
(c) open('file.txt', 'w+')
(d) Both (b) and (c)

Q 98. What will be the output of `print(2 3 2)`?

(a) 64
(b) 512
(c) 36
(d) 8

Q 99. What is the output of `print(list(range(3, 15, 3)))`?

(a) [3, 6, 9, 12]
(b) [3, 6, 9]
(c) [3, 6, 9, 12, 15]
(d) Error

Q 100. What does the `zip()` function do in Python?

(a) Combines multiple lists element-wise into tuples
(b) Sorts a list
(c) Compresses data
(d) Merges two dictionaries

Conclusion

In conclusion, practicing Python MCQ questions is an excellent way to reinforce your understanding of core Python concepts and prepare for exams or interviews. By regularly solving Python MCQs, you can improve your problem-solving skills and become more proficient in the language. Whether you're a beginner or an advanced learner, Python MCQs provide a valuable resource for mastering Python programming.

Dear learners, join our Tech Trendy Masterclasses to help you to learn and immerse yourself in the latest trending technologies and upgrade your tech skills with the latest skills trends, design, and practices.

Further Read:

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FAQs

The GIL is a mutex that allows only one thread to execute Python bytecode at a time, limiting multi-threading performance.

External libraries can be installed using the pip package manager, e.g., pip install library_name.

The pass statement is a no-operation statement in Python. It is used when a statement is syntactically required but no code needs to be executed, such as when defining an empty function or class.

Python handles memory management automatically through reference counting and garbage collection. Objects are created in a private heap, and the garbage collector frees up unused memory when objects are no longer in use.

Mutable objects can be modified after creation, e.g., list, dict, set.
Immutable objects cannot be changed once created, e.g., int, float, str, tuple.

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