Python Multiple Choice Questions

Chapter 1: Introduction to Python

1. Who created Python?

(a) Guido van Rossum ✓
(b) Larry Wall
(c) Yukihiro Matsumoto
(d) Bjarne Stroustrup

2. Which of the following is NOT a feature of Python?

(a) Interpreted language
(b) Statically typed ✓
(c) Object-oriented
(d) High-level language

3. What is the standard file extension for Python code?

(a) .pyt
(b) .pt
(c) .py ✓
(d) .px

Chapter 2: Variables and Data Types

4. Which of the following is a valid variable name in Python?

(a) 2my_var
(b) my-var
(c) _my_var ✓
(d) global

5. What is the data type of the value 10.5?

(a) int
(b) str
(c) float ✓
(d) bool

6. What will be the output of print(type(True))?

(a) <class 'int'>
(b) <class 'bool'> ✓
(c) <class 'str'>
(d) <class 'NoneType'>

7. How do you create a multiline string in Python?

(a) Using single quotes: 'This is a multiline string'
(b) Using double quotes: "This is a multiline string"
(c) Using triple quotes: """This is a multiline string""" ✓
(d) Using backticks: `This is a multiline string`

Chapter 3: Operators

8. What is the result of the expression 10 // 3?

(a) 3.33
(b) 3 ✓
(c) 1
(d) 0

9. Which operator is used for exponentiation?

(a) ^
(b) ** ✓
(c) *
(d) %

10. What is the value of x after: x = 5; x += 2?

(a) 2
(b) 5
(c) 7 ✓
(d) 10

11. Which of the following is a logical operator?

(a) &
(b) or ✓
(c) |
(d) in

Chapter 4: Control Flow - Conditional Statements

12. What keyword is used for conditional execution in Python if a condition is true?

(a) then
(b) if ✓
(c) when
(d) case

13. What does the elif keyword signify?

(a) A nested if statement
(b) The end of an if statement
(c) Else if, a condition to check if the previous if or elif conditions were false ✓
(d) An optional part of an if statement that always executes

14. Consider: if x > 10: print("A") elif x > 5: print("B") else: print("C"). If x = 7, what is printed?

(a) A
(b) B ✓
(c) C
(d) A and B

Chapter 5: Control Flow - Loops

15. Which type of loop is used when the number of iterations is known beforehand?

(a) while loop
(b) for loop ✓
(c) do-while loop (Python doesn't have a direct do-while)
(d) infinite loop

16. What does the break statement do in a loop?

(a) Skips the current iteration and continues with the next
(b) Exits the loop immediately ✓
(c) Restarts the loop from the beginning
(d) Pauses the loop execution

17. What will range(5) produce?

(a) [0, 1, 2, 3, 4, 5]
(b) [1, 2, 3, 4, 5]
(c) [0, 1, 2, 3, 4] ✓
(d) [5]

18. Consider: i = 0; while i < 3: print(i); i += 1. What is the last number printed?

(a) 0
(b) 1
(c) 2 ✓
(d) 3

Chapter 6: Data Structures - Lists

19. How do you create an empty list in Python?

(a) list = {}
(b) list = [] ✓
(c) list = ()
(d) list = new List()

20. Which method adds an element to the end of a list?

(a) insert()
(b) add()
(c) append() ✓
(d) extend()

21. If my_list = [10, 20, 30, 40], what is my_list[1:3]?

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

22. Which of the following is TRUE about Python lists?

(a) They are immutable.
(b) They can only store elements of the same data type.
(c) They are ordered and mutable. ✓
(d) They are accessed by key-value pairs.

Chapter 7: Data Structures - Tuples

23. Which of the following creates a tuple?

(a) my_tuple = [1, 2]
(b) my_tuple = {1, 2}
(c) my_tuple = (1, 2) ✓
(d) my_tuple = <1, 2>

24. What is a key characteristic of tuples compared to lists?

(a) Tuples are mutable.
(b) Tuples are immutable. ✓
(c) Tuples can only store integers.
(d) Tuples are unordered.

25. What happens if you try to change an element in a tuple after creation?

(a) The element is changed.
(b) It raises a TypeError. ✓
(c) It raises an IndexError.
(d) It converts the tuple to a list.

Chapter 8: Data Structures - Dictionaries

26. How is an empty dictionary created?

(a) my_dict = []
(b) my_dict = ()
(c) my_dict = {} ✓ (Note: {} also creates an empty set, context matters or use dict())
(d) my_dict = new Dictionary()

27. How do you access a value in a dictionary?

(a) By its index
(b) By its key ✓
(c) Using the get_value() method
(d) By its order of insertion

28. If my_dict = {"name": "Alice", "age": 30}, what is my_dict.get("city", "Unknown")?

(a) Alice
(b) 30
(c) Unknown ✓
(d) It raises a KeyError

29. Which method is used to add a new key-value pair to a dictionary or update an existing key?

(a) add()
(b) append()
(c) my_dict[key] = value ✓
(d) insert()

Chapter 9: Data Structures - Sets

30. How do you create an empty set correctly to avoid confusion with an empty dictionary?

(a) my_set = {}
(b) my_set = []
(c) my_set = set() ✓
(d) my_set = ()

31. What is a primary characteristic of a Python set?

(a) Ordered and mutable
(b) Ordered and immutable
(c) Unordered and contains unique elements ✓
(d) Unordered and can contain duplicate elements

32. Which operation returns the common elements between two sets?

(a) Union (|)
(b) Difference (-)
(c) Intersection (&) ✓
(d) Symmetric Difference (^)

Chapter 10: Functions

33. What keyword is used to define a function in Python?

(a) fun
(b) define
(c) def ✓
(d) function

34. What is the purpose of the return statement in a function?

(a) To print a value to the console
(b) To stop the execution of the function and optionally send a value back to the caller ✓
(c) To define a variable within the function
(d) To import a module

35. A function defined with def greet(name="Guest"): ... is using:

(a) A required argument
(b) A keyword argument
(c) A default argument value ✓
(d) A variable-length argument

36. What does *args in a function definition allow?

(a) Passing a fixed number of keyword arguments
(b) Passing a variable number of non-keyword (positional) arguments ✓
(c) Passing a variable number of keyword arguments
(d) Passing a single list argument

Chapter 11: Modules and Packages

37. What keyword is used to bring external code into your current Python script?

(a) include
(b) import ✓
(c) use
(d) load

38. If you import a module as import math, how do you access its sqrt function?

(a) sqrt()
(b) math.sqrt() ✓
(c) math->sqrt()
(d) import.sqrt()

39. What is the purpose of the __init__.py file in a Python package directory?

(a) It contains the main executable code for the package.
(b) It's a script that installs the package.
(c) It signifies that the directory should be treated as a package and can contain package initialization code. ✓
(d) It's a documentation file for the package.

Chapter 12: File Handling

40. Which function is used to open a file in Python?

(a) file_open()
(b) open_file()
(c) open() ✓
(d) read_file()

41. What mode is used to open a file for writing, which overwrites the file if it exists?

(a) "r"
(b) "a"
(c) "w" ✓
(d) "x"

42. Which method is commonly used to read the entire content of a file into a single string?

(a) readline()
(b) readlines()
(c) read() ✓
(d) fetch()

43. What is the recommended way to work with files to ensure they are properly closed, even if errors occur?

(a) Using a try...except block and manually calling close()
(b) Using the with open(...) as f: statement ✓
(c) Relying on Python's automatic garbage collection to close files
(d) Opening files only in read mode

Chapter 13: Exception Handling

44. What block of code is used to catch and handle potential errors in Python?

(a) if...else
(b) for...in
(c) try...except ✓
(d) do...while

45. Which keyword is used to specify the code that will run regardless of whether an exception occurred or not?

(a) else (in a try block)
(b) catch
(c) finally ✓
(d) ensure

46. What type of error occurs if you try to access an index that is out of bounds for a list?

(a) TypeError
(b) ValueError
(c) IndexError ✓
(d) NameError

47. How can you raise a custom exception in Python?

(a) Using the throw keyword
(b) Using the error keyword
(c) Using the raise keyword followed by an exception class or instance ✓
(d) Using the exception keyword

Chapter 14: Object-Oriented Programming (OOP) - Basics

48. What is a blueprint for creating objects in Python?

(a) Function
(b) Module
(c) Class ✓
(d) Variable

49. What is an instance of a class called?

(a) Method
(b) Attribute
(c) Object ✓
(d) Constructor

50. What is the name of the special method that initializes an object when it's created?

(a) start()
(b) __init__() ✓
(c) constructor()
(d) initialize()

51. What does the self parameter in a class method refer to?

(a) The class itself
(b) The parent class
(c) The instance of the class on which the method is called ✓
(d) A global variable

Chapter 15: OOP - Inheritance

52. What is the concept of a new class deriving properties and methods from an existing class called?

(a) Encapsulation
(b) Polymorphism
(c) Inheritance ✓
(d) Abstraction

53. If class B inherits from class A, then class A is called the:

(a) Subclass or Derived class
(b) Superclass or Base class ✓
(c) Child class
(d) Instance class

54. How do you call a method from the parent class within a method of a child class?

(a) parent.method_name()
(b) super().method_name() ✓
(c) base.method_name()
(d) self.parent.method_name()

Chapter 16: OOP - Polymorphism & Encapsulation

55. What OOP concept allows objects of different classes to respond to the same method call in different ways?

(a) Inheritance
(b) Polymorphism ✓
(c) Encapsulation
(d) Abstraction

56. Bundling data (attributes) and methods that operate on the data within a single unit (class) is known as:

(a) Inheritance
(b) Polymorphism
(c) Encapsulation ✓
(d) Modularity

57. In Python, prefixing an attribute name with a double underscore (__attribute) results in:

(a) Making the attribute strictly private and inaccessible
(b) Name mangling, to make it harder (but not impossible) to access directly from outside ✓
(c) Making the attribute public
(d) Declaring the attribute as static

Chapter 17: List Comprehensions & Generators

58. What is the primary benefit of using list comprehensions?

(a) They make lists immutable.
(b) They provide a concise way to create lists. ✓
(c) They can only be used with numerical data.
(d) They execute faster than for loops for all scenarios.

59. Which of the following is a correct list comprehension to create a list of squares of numbers from 0 to 4?

(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**2 for x in range(5))

60. What does a generator function use to produce a sequence of values lazily?

(a) return statement for each value
(b) yield statement ✓
(c) generate statement
(d) produce statement

Chapter 18: Lambdas, Map, Filter, Reduce

61. What is a lambda function in Python?

(a) A multi-line function
(b) A small, anonymous (unnamed) inline function ✓
(c) A function that can only be used for mathematical operations
(d) A function defined within a class

62. The map() function is used to:

(a) Filter elements from an iterable based on a condition.
(b) Apply a function to each item in an iterable and return a map object (iterator) of the results. ✓
(c) Reduce an iterable to a single cumulative value by applying a function.
(d) Create a list of anonymous functions.

63. Which function would you use to create a new list containing only the even numbers from an existing list numbers?

(a) map(lambda x: x % 2 == 0, numbers)
(b) filter(lambda x: x % 2 == 0, numbers) ✓
(c) reduce(lambda x, y: x if x % 2 == 0 else y, numbers)
(d) select(lambda x: x % 2 == 0, numbers)

Chapter 19: Regular Expressions

64. Which module in Python is used for working with regular expressions?

(a) regex
(b) re ✓
(c) string
(d) pattern

65. What does the re.search() method do?

(a) Returns a match object if the pattern is found anywhere in the string, otherwise None. ✓
(b) Returns a match object only if the pattern is found at the beginning of the string.
(c) Returns a list of all non-overlapping matches in the string.
(d) Splits the string by the occurrences of the pattern.

66. In a regular expression, what does \d typically match?

(a) Any whitespace character
(b) Any non-digit character
(c) Any digit character (0-9) ✓
(d) The literal character 'd'

Chapter 20: Working with Dates and Times

67. Which module is primarily used for working with dates and times in Python?

(a) time
(b) date
(c) datetime ✓
(d) calendar

68. How can you get the current date and time using the datetime module?

(a) datetime.now() ✓
(b) datetime.current()
(c) datetime.today_and_time()
(d) datetime.get_current_datetime()

69. The strftime() method is used to:

(a) Parse a string into a datetime object.
(b) Format a datetime object into a string representation. ✓
(c) Calculate the difference between two dates.
(d) Get the current timestamp.

e-Trainings

Python Basics

Python Adv.

Python MCQs