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Python Functions Quiz

Updated on:  | 43 Comments

Mastering functions and modules is crucial for writing clean, efficient, and scalable Python code. This Python Functions Quiz is designed to test your understanding of two fundamental Python concepts: Functions and Modules.

From defining functions, understanding variable scope and function arguments to importing and utilizing modules, these Multiple Choice Questions (MCQs) will help solidify your knowledge and highlight areas for improvement.

  • The quiz contains 25 questions. There is no time limit.
  • You will get 1 point for each correct answer. Solve 15 correctly to pass the test
  • Read Python functions and Python function arguments for any help.

Also, See:

1. Which of the following modules is NOT part of Python’s standard library (meaning you usually need to install it separately)?

 
 
 
 

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

 
 
 
 

3. One of the main benefits of using modules in Python is:

 
 
 
 

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

list1 = [1, 2, 3]

def append_item(a_list, item):
    a_list.append(item)

append_item(list1, 4)
print(list1)
 
 
 
 

5. What is the output of the following display() function call

def display(**kwargs):
    for i in kwargs:
        print(i)

display(emp="Kelly", salary=9000)
 
 
 
 

6. What is the output of the following display_person() function call

def display_person(*args):
    for i in args:
        print(i)

display_person(name="Emma", age="25")
 
 
 

7. What is a Python decorator primarily used for?

 
 
 
 

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

 
 
 
 

9. Select which True for Python function

 
 
 
 

10. What is the output of the add() function call

def add(a, b):
    return a+5, b+5

result = add(3, 2)
print(result)
 
 
 
 

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

def multiply(a, b):
    return a * b

def apply_operation(func, x, y):
    return func(x, y)

result = apply_operation(multiply, 5, 3)
print(result)
 
 
 
 

12. What is the primary purpose of *args and **kwargs in Python function definitions?

 
 
 
 

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

count = 0

def increment():
    global count
    count += 1

increment()
print(count)
 
 
 
 

14. Choose the correct declaration for fun1().

To enable the successful execution of the below two fun1() function call, choose the correct declaration for fun1().

fun1(25, 75, 55)
fun1(10, 20)
 
 
 
 

15. How would you get the current date and time using the datetime module?

 
 
 

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

def do_nothing():
    pass

result = do_nothing()
print(result)
 
 
 
 

17. Which function from the random module would you use to get a random integer between 1 and 10 (including 1 and 10)?

 
 
 
 

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

 
 
 
 

19. What is the output of the following function call

def add(a, b):
  return a + b
  a = 20
  b = 30
  return a + b

result = add(5, 10)
print(result)
 
 
 
 

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

numbers = [1, 2, 3, 4, 5]
squared_numbers = list(map(lambda x: x*x, numbers))
print(squared_numbers)
 
 
 

21. What is the output of the following function call

def fun1(name, age=20):
    print(name, age)

fun1('Emma', 25)
 
 
 

22. What is the primary purpose of the if __name__ == "__main__": block in a Python script?

 
 
 
 

23. What is the output of the following code?

def outer_fun(a, b):
    def inner_fun(c, d):
        return c + d
    return inner_fun(a, b)

res = outer_fun(5, 10)
print(res)
 
 
 

24. You want to import the numpy module but refer to it as np in your code. Which syntax is correct?

 
 
 
 

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

x = 5

def update_x():
    global x
    x = 10

update_x()
print(x)
 
 
 
 

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About Vishal

I’m Vishal Hule, the Founder of PYnative.com. As a Python developer, I enjoy assisting students, developers, and learners. Follow me on Twitter.

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Comments

  1. Brad Kent says

    Which sys module function/attribute is commonly used to exit a Python script programmatically

    sys.exit() is listed twice

    Reply

  3. Kevin says

    This function does NOT return a value:

    def infinite_loop():
    while True:
    pass

    infinite_loop() # no value returned (no matter how long I wait)

    Reply

  4. Kevin says

    When there is an unhandled error within a function, it looks like the function will not return a value.

    def div(a):
    return 12/a

    b = div(0)
    print(b)

    It looks like code execution stops within the return statement and does not return a value.

    Reply

  5. Gijs says

    Hi Vishal, the question about Python returns is ambiguous. Technically a function always returns exactly *one* object. This is None (of NoneType) by default. This object can be anything, a simple type, like an int, or a container type like a tuple. Combining the return of multiple values (Python will put them in a tuple) with tuple unpacking makes it appear as returning multiple values. The question is ambiguous I think. The term value is not well defined. If you consider value in Python to mean object, the answer should be always exactly one.

    Reply

  7. sunil sikarwar says

    10. Python function always returns a value

    False
    True
    this question answer should be false because when ll we pass return statement then we get return a value
    otherwise fun don’t return any things.
    so please tell me i m right or wrong.

    Reply

  9. K says

    Thank for this website.
    Q4 the first option “A Python function can return only a single value” should be True.

    Reply

    • Gary says

      if you iterate through a dictionary with
      for x in mydict
      then it will only give you the keys
      You can get both keys and values with
      for x in mydict.items()
      or just values with
      for x in mydict.values()

      Reply

  14. Cristina says

    I’m curious about the statement “a function always returns a value”. What about a “pass” statement. Wouldn’t that make the function not return anything? I know stack overflow and all the reading materials say that a function always returns at least None… but what about pass?

    Reply

  15. Asha Sarna says

    Hi,

    I noticed that the example used in the explanation of question number 8, had a small error…. shouldn’t the output be Emma, 20 as the default argument was used.

    Great quiz! Keep it up!

    Cheers!

    Reply

  16. ronno says

    I have a question about a code.

    # Replace this starter code with your function

    june_days = 30
print("June has " + str(june_days) + "days.")
july_days = 31
print("July has " + str(july_days) + "days.")

    How to rewrite functions?

    Reply

  19. Robert says

    Your statement “We can pass either use either positional arguments or keyword arguments, not both at the same time.” is not completely true.
    You can mix. You just can not pass a positional argument after a keyword argument, but you can pass a keyword argument after a positional argument.
    So e.g.
    fun1("emma",age=2) works fine.

    Great stuff otherwise, helps me a lot learning Python!

    Reply

  22. poorna says

    I think for question number 5
    both fun1(name=’Emma’, age=23) and fun1(‘Emma’, 23)
    option 1 and 3 is correct. When I marked option 3 alone, while evaluation it shows it’s wrong!

    Also since you have not used ‘ ‘ (quotes) instead ’ ’ symbol is used
    to pass a string, it gives a compilation error !!!

    Hope this helps!!

    Thanks for all your efforts.

    Cheers,
    Poorna

    Reply

  24. Rohan says

    Q9 is wrong.
    It should be displayPerson("Emma",25). Current code throws error and explanation talk about kwargs instead of “args”.

    Reply

      • Shayeri says

        As I am newbie in programming, I found these quizes really helpful to have a better concept. But I didn’t understand the explanation given for Q2. Some grammatical errors have it very ambiguous.

        Reply

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