Master Python with These Unique MCQs (With Answers)

Python is a very popular programming language globally, famous for its ease and flexibility. It doesn’t matter if you are new to coding or a seasoned coder; trying out your skills with multiple-choice questions(MCQs) is an excellent way to reinforce your knowledge. In this blog post, we’ve rounded up 80 individual MCQs to enable you to test your skills and acquire new knowledge.

Python MCQs

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1. What is the output of the following code? python Copy print (type(5.0))
   b) float
   c) str
   d) None
   Answer: b) float
2. Which of the following is a valid variable name in Python?
   a) 1var
   b) _var
   c) var-name
   d) var name
   Answer: b) _var
3. What does the len() function do?
   a) Returns the type of an object
   b) Returns the length of an object
   c) Converts a string to lowercase
   d) None of the above
   Answer: b) Returns the length of an object
4. Which keyword is used to define a function in Python?
   a) func
   b) define
   c) def
   d) function
   Answer: c) def
5. What is the output of print(2 ** 3)?
   a) 6
   b) 8
   c) 9
   d) 23
   Answer: b) 8

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6. Which of the following is a mutable data type in Python?
   a) int
   b) str
   c) list
   d) tuple
   Answer: c) list
7. What is the output of the following code?pythonCopyprint([1, 2, 3] + [4, 5])a) [1, 2, 3, 4, 5]
   b) [5, 7, 3]
   c) [1, 2, 3]
   d) Error
   Answer: a) [1, 2, 3, 4, 5]
8. Which method is used to add an element to the end of a list?
   a) append()
   b) insert()
   c) add()
   d) extend()
   Answer: a) append()
9. What is the output of the following code?pythonCopyprint((1, 2, 3) == (1, 2, 3))a) True
   b) False
   c) Error
   d) None
   Answer: a) True
10. Which of the following is NOT a valid dictionary declaration?
    a) {1: 'one', 2: 'two'}
    b) dict([(1, 'one'), (2, 'two')])
    c) {1, 2, 3}
    d) {}
    Answer: c) {1, 2, 3}

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11. What is the output of the following code?pythonCopyfor i in range(3): print(i, end=” “)a) 0 1 2
    b) 1 2 3
    c) 0 1 2 3
    d) Error
    Answer: a) 0 1 2
12. Which keyword is used to exit a loop prematurely?
    a) stop
    b) break
    c) exit
    d) return
    Answer: b) break
13. What does the pass statement do?
    a) Exits the program
    b) Skips the current iteration
    c) Acts as a placeholder
    d) None of the above
    Answer: c) Acts as a placeholder
14. What is the output of the following code?pythonCopyx = 10 if x > 5: print(“Greater”) else: print(“Smaller”)a) Greater
    b) Smaller
    c) Error
    d) None
    Answer: a) Greater
15. Which loop is used to iterate over a sequence in Python?
    a) for
    b) while
    c) do-while
    d) repeat
    Answer: a) for

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16. What is the output of the following code?pythonCopydef add(a, b=5): return a + b print(add(10))a) 10
    b) 15
    c) Error
    d) None
    Answer: b) 15
17. Which keyword is used to import a module in Python?
    a) include
    b) import
    c) require
    d) use
    Answer: b) import
18. What is the output of the following code?pythonCopyimport math print(math.sqrt(16))a) 2
    b) 4
    c) 8
    d) Error
    Answer: b) 4
19. What does the return statement do in a function?
    a) Exits the function
    b) Returns a value to the caller
    c) Both a and b
    d) None of the above
    Answer: c) Both a and b
20. Which of the following is a built-in function in Python?
    a) print()
    b) input()
    c) len()
    d) All of the above
    Answer: d) All of the above

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21. Which mode is used to open a file for writing?
    a) ‘r’
    b) ‘w’
    c) ‘a’
    d) ‘x’
    Answer: b) ‘w’
22. What is the output of the following code?pythonCopywith open(“test.txt”, “w”) as f: f.write(“Hello, World!”)a) Creates a file and writes “Hello, World!”
    b) Reads the file
    c) Deletes the file
    d) Error
    Answer: a) Creates a file and writes “Hello, World!”
23. Which method is used to read a file line by line?
    a) read()
    b) readline()
    c) readlines()
    d) Both b and c
    Answer: d) Both b and c
24. What does the close() method do?
    a) Deletes a file
    b) Closes the file and frees up resources
    c) Reads the file
    d) None of the above
    Answer: b) Closes the file and frees up resources
25. Which mode is used to open a file for appending?
    a) ‘r’
    b) ‘w’
    c) ‘a’
    d) ‘x’
    Answer: c) ‘a’

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26. What is the output of the following code?pythonCopyclass MyClass: x = 5 obj = MyClass() print(obj.x)a) 5
    b) Error
    c) None
    d) 0
    Answer: a) 5
27. Which keyword is used to create a class in Python?
    a) class
    b) def
    c) struct
    d) object
    Answer: a) class
28. What is the output of the following code?pythonCopyclass MyClass: def __init__(self, name): self.name = name obj = MyClass(“Python”) print(obj.name)a) Python
    b) Error
    c) None
    d) MyClass
    Answer: a) Python
29. Which method is used to define a constructor in Python?
    a) init()
    b) new()
    c) class()
    d) self()
    Answer: a) init()
30. What is inheritance in Python?
    a) A way to hide data
    b) A way to reuse code
    c) A way to create loops
    d) None of the above
    Answer: b) A way to reuse code

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31. What is the output of the following code?pythonCopytry: print(10 / 0) except ZeroDivisionError: print(“Error”)a) Error
    b) 0
    c) None
    d) 10
    Answer: a) Error
32. Which keyword is used to handle exceptions in Python?
    a) try
    b) catch
    c) except
    d) Both a and c
    Answer: d) Both a and c
33. What is the output of the following code?pythonCopytry: print(“Hello”) finally: print(“World”)a) Hello
    b) World
    c) Hello World
    d) Error
    Answer: c) Hello World
34. Which block is executed if no exception occurs?
    a) try
    b) except
    c) finally
    d) else
    Answer: d) else
35. What is the purpose of the finally block?
    a) To handle exceptions
    b) To execute code regardless of exceptions
    c) To define a function
    d) None of the above
    Answer: b) To execute code regardless of exceptions

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36. What is the output of the following code?pythonCopyx = lambda a: a + 10 print(x(5))a) 5
    b) 10
    c) 15
    d) Error
    Answer: c) 15
37. Which module is used for regular expressions in Python?
    a) re
    b) regex
    c) string
    d) None of the above
    Answer: a) re
38. What is the output of the following code?pythonCopyimport re print(re.findall(r’\d’, ‘abc123’))a) [‘1’, ‘2’, ‘3’]
    b) [‘abc’]
    c) [‘123’]
    d) Error
    Answer: a) [‘1’, ‘2’, ‘3’]
39. What is a decorator in Python?
    a) A function that modifies another function
    b) A type of loop
    c) A data structure
    d) None of the above
    Answer: a) A function that modifies another function
40. What is the output of the following code?pythonCopydef decorator(func): def wrapper(): print(“Before”) func() print(“After”) return wrapper @decorator def say_hello(): print(“Hello”) say_hello()a) Before Hello After
    b) Hello
    c) Before After
    d) Error
    Answer: a) Before Hello After

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MCQs (41 to 80)  These questions will cover advanced Python concepts, libraries, and practical applications.

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41. What is the output of the following code?pythonCopysquares = [x**2 for x in range(5)] print(squares)a) [0, 1, 4, 9, 16]
    b) [1, 4, 9, 16, 25]
    c) [0, 1, 2, 3, 4]
    d) Error
    Answer: a) [0, 1, 4, 9, 16]
42. Which of the following is a generator expression?
    a) (x**2 for x in range(5))
    b) [x**2 for x in range(5)]
    c) {x**2 for x in range(5)}
    d) {x: x**2 for x in range(5)}
    Answer: a) (x**2 for x in range(5))
43. What is the output of the following code?pythonCopygen = (x for x in range(3)) print(next(gen)) print(next(gen))a) 0 1
    b) 1 2
    c) 0 1 2
    d) Error
    Answer: a) 0 1
44. What is the advantage of using a generator over a list?
    a) Generators are faster
    b) Generators use less memory
    c) Generators are easier to write
    d) None of the above
    Answer: b) Generators use less memory
45. What is the output of the following code?pythonCopydef my_gen(): yield 1 yield 2 for i in my_gen(): print(i, end=” “)a) 1 2
    b) 1
    c) 2
    d) Error
    Answer: a) 1 2

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46. What is the output of the following code?pythonCopymy_set = {1, 2, 3, 3, 2} print(len(my_set))a) 3
    b) 5
    c) 2
    d) Error
    Answer: a) 3
47. Which method is used to add an element to a set?
    a) add()
    b) append()
    c) insert()
    d) extend()
    Answer: a) add()
48. What is the output of the following code?pythonCopymy_dict = {‘a’: 1, ‘b’: 2} print(my_dict.get(‘c’, 3))a) 1
    b) 2
    c) 3
    d) Error
    Answer: c) 3
49. Which method removes all elements from a dictionary?
    a) clear()
    b) remove()
    c) pop()
    d) delete()
    Answer: a) clear()
50. What is the output of the following code?pythonCopymy_dict = {x: x**2 for x in range(3)} print(my_dict)a) {0: 0, 1: 1, 2: 4}
    b) {0: 0, 1: 1, 2: 2}
    c) {1: 1, 2: 4}
    d) Error
    Answer: a) {0: 0, 1: 1, 2: 4}

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51. Which library is used for numerical computations in Python?
    a) math
    b) numpy
    c) pandas
    d) random
    Answer: b) numpy
52. What is the output of the following code?pythonCopyimport numpy as np arr = np.array([1, 2, 3]) print(arr.shape)a) (3,)
    b) (1, 3)
    c) (3, 1)
    d) Error
    Answer: a) (3,)
53. Which library is used for data manipulation and analysis?
    a) numpy
    b) pandas
    c) matplotlib
    d) scipy
    Answer: b) pandas
54. What is the output of the following code?pythonCopyimport pandas as pd data = {‘Name’: [‘Alice’, ‘Bob’], ‘Age’: [25, 30]} df = pd.DataFrame(data) print(df[‘Name’][1])a) Alice
    b) Bob
    c) 25
    d) 30
    Answer: b) Bob
55. Which library is used for plotting graphs in Python?
    a) numpy
    b) pandas
    c) matplotlib
    d) scipy
    Answer: c) matplotlib

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56. What is the output of the following code?pythonCopydef outer(): x = 5 def inner(): nonlocal x x += 1 return x return inner() print(outer())a) 5
    b) 6
    c) Error
    d) None
    Answer: b) 6
57. What is the purpose of the nonlocal keyword?
    a) To declare a global variable
    b) To declare a local variable
    c) To modify a variable in the nearest enclosing scope
    d) None of the above
    Answer: c) To modify a variable in the nearest enclosing scope
58. What is the output of the following code?pythonCopydef func(*args): return sum(args) print(func(1, 2, 3))a) 6
    b) (1, 2, 3)
    c) Error
    d) None
    Answer: a) 6
59. What does the *args parameter do in a function?
    a) Accepts keyword arguments
    b) Accepts a variable number of positional arguments
    c) Accepts a single argument
    d) None of the above
    Answer: b) Accepts a variable number of positional arguments
60. What is the output of the following code?pythonCopydef func(**kwargs): return kwargs print(func(a=1, b=2))a) {‘a’: 1, ‘b’: 2}
    b) (1, 2)
    c) Error
    d) None
    Answer: a) {‘a’: 1, ‘b’: 2}

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61. Which method is used to check if a file exists?
    a) os.path.exists()
    b) os.exists()
    c) file.exists()
    d) None of the above
    Answer: a) os.path.exists()
62. What is the output of the following code?pythonCopyimport os print(os.name)a) posix
    b) nt
    c) java
    d) Depends on the OS
    Answer: d) Depends on the OS
63. Which method is used to rename a file?
    a) os.rename()
    b) os.move()
    c) os.replace()
    d) os.update()
    Answer: a) os.rename()
64. What is the output of the following code?pythonCopyimport os print(os.getcwd())a) Current working directory
    b) Home directory
    c) Root directory
    d) Error
    Answer: a) Current working directory
65. Which method is used to delete a file?
    a) os.delete()
    b) os.remove()
    c) os.unlink()
    d) Both b and c
    Answer: d) Both b and c

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66. What is the output of the following code?pythonCopytry: print(10 / 0) except ZeroDivisionError as e: print(“Error:”, e)a) Error: division by zero
    b) Error: ZeroDivisionError
    c) Error: 10 / 0
    d) None
    Answer: a) Error: division by zero
67. Which module is used for logging in Python?
    a) log
    b) logging
    c) logger
    d) debug
    Answer: b) logging
68. What is the output of the following code?pythonCopyimport logging logging.basicConfig(level=logging.DEBUG) logging.debug(“Debug message”)a) Debug message
    b) No output
    c) Error
    d) None
    Answer: a) Debug message
69. Which method is used to raise an exception manually?
    a) raise
    b) throw
    c) except
    d) assert
    Answer: a) raise
70. What is the purpose of the assert statement?
    a) To handle exceptions
    b) To debug code
    c) To test conditions
    d) Both b and c
    Answer: d) Both b and c

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71. What is the output of the following code?pythonCopyprint(__name__)a) main
    b) main
    c) None
    d) Error
    Answer: a) main
72. Which module is used to work with dates and times?
    a) datetime
    b) time
    c) calendar
    d) All of the above
    Answer: d) All of the above
73. What is the output of the following code?pythonCopyimport datetime print(datetime.datetime.now().year)a) Current year
    b) 2023
    c) Error
    d) None
    Answer: a) Current year
74. Which module is used for working with JSON data?
    a) json
    b) xml
    c) yaml
    d) None of the above
    Answer: a) json
75. What is the output of the following code?pythonCopyimport json data = ‘{“name”: “Alice”, “age”: 25}’ print(json.loads(data)[‘name’])a) Alice
    b) 25
    c) Error
    d) None
    Answer: a) Alice

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76. What is the output of the following code?pythonCopyprint(isinstance(5, int))a) True
    b) False
    c) Error
    d) None
    Answer: a) True
77. Which method is used to sort a list in place?
    a) sorted()
    b) sort()
    c) arrange()
    d) order()
    Answer: b) sort()
78. What is the output of the following code?pythonCopymy_list = [3, 1, 2] my_list.sort() print(my_list)a) [1, 2, 3]
    b) [3, 1, 2]
    c) Error
    d) None
    Answer: a) [1, 2, 3]
79. Which method is used to reverse a list in place?
    a) reverse()
    b) reversed()
    c) sort(reverse=True)
    d) None of the above
    Answer: a) reverse()
80. What is the output of the following code?pythonCopymy_list = [1, 2, 3] my_list.reverse() print(my_list)a) [3, 2, 1]
    b) [1, 2, 3]
    c) Error
    d) None
    Answer: a) [3, 2, 1]

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Conclusion:
These 80 MCQs cover a wide range of Python topics, from basic syntax to advanced concepts. Use them to test your knowledge, prepare for interviews, or simply learn something new. Stay connected with us we will be covering wide range of topics here.

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