Python Quiz - pythonjournals.com

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Python Practice Quiz: 30 Logical & Coding Questions

Test your Python knowledge with 30 carefully selected questions, ranging from basics to tricky logical problems. Perfect for beginners and intermediate learners.

1 / 30

What is the output of

len({"a": 1, "b": 2})

1. 1

2. 2

3. 3

4. 4

2 / 30

Which method returns sorted list without modifying original?

1. sort()

2. sorted()

3. arrange()

4. order()

3 / 30

Which function returns both index and value in a loop?

1. zip()

2. enumerate()

3. items()

4. keys()

4 / 30

Which keyword calls parent class method?

1. parent

2. this

3. super()

4. __init__

5 / 30

Which prefix makes variable private in class?

1. $

2. __

3. _

4. @@

6 / 30

What is polymorphism?

1. Same function name different behaviors

2. Data encapsulation

3. Recursion

4. different function name different behaviors

7 / 30

Which decorator makes method belong to class not object?

1. @staticmethod

2. @property

3. @super

4. @classmethod

8 / 30

What keyword is used for exception handling?

1. catch

2. try

3. throw

4. error

9 / 30

Which method returns dictionary items as pairs?

1. keys()

2. values()

3. items()

4. pairs()

10 / 30

What does **kwargs represent?

1. Variable positional arguments

2. Recursive arguments

3. Variable keyword arguments

4. Global arguments

11 / 30

What is Python?

1. A markup language

2. A high-level programming language

3. A database

4. An operating system

12 / 30

Which of the following statements about Python are TRUE?

1. set([1,2,2,3]) == {1,2,3}

2. hash("abc") == hash("abc") within the same run

3. Python dictionaries preserve insertion order from Python 3.7+

4. float("nan") == float("nan") returns True

13 / 30

What is a decorator in Python?

1. Modifies behavior of function

2. Deletes a function

3. Defines a new class

4. Creates variables

14 / 30

What will be the output?

a = []


for i in range(3):
   a.append(lambda x: i * x)
print([f(2) for f in a])

1. [0, 2, 4]

2. [4, 4, 4]

3. [0, 0, 0]

4. [2, 4, 6]

15 / 30

What will be the output?

a = [1, 2, 3] b = a b.append(4) print(a)

1. [1, 2, 3]

2. [1, 2, 3, 4]

3. Error

4. [4]

16 / 30

What is the output?

print({x: x**2 for x in range(3)})

1. {1:1, 2:4, 3:9}

2. [0, 1, 4]

3. {0:0, 1:1, 2:4}

4. Error

17 / 30

Which function checks the existence of a path?

1. os.exists()

2. os.path.exists()

3. path.exist()

4. os.check()

18 / 30

Which method clears all elements from a list?

1. clear()

2. delete()

3. remove()

4. pop()

19 / 30

What is the output?

print(len(set([1,2,2,3,3,3])))

1. 6

2. 5

3. 3

4. Error

20 / 30

Predict the output:

print([x for x in "Python" if x in "aeiou"])

1. ['a', 'o']

2. ['o']

3. []

4. Error

21 / 30

What is the output?

print("hello world".title())

1. "hello world"

2. "HELLO WORLD"

3. "Hello World"

4. "Hello world"

22 / 30

Which method removes an element by value?

1. delete()

2. pop()

3. remove()

4. clear()

23 / 30

What does if __name__ == "__main__": do?

1. Defines constants

2. Runs code only when file executed directly

3. Defines classes

4. Imports file

24 / 30

Who developed Python?

1. James Gosling

2. Guido van Rossum

3. Dennis Ritchie

4. Bjarne Stroustrup

25 / 30

How do you check if a key exists in a dictionary?

1. key in dict

2. dict.has(key)

3. dict.exist(key)

4. keyof dict

26 / 30

What does __repr__ return?

1. Memory address

2. None

3. User-friendly string

4. Developer representation

27 / 30

Predict the result:

print({True: "yes", 1: "no", 0: "zero", False: "false"})

1. {True: 'yes', 1: 'no', 0: 'zero', False: 'false'}

2. {True: 'no', 0: 'false'}

3. {1: 'no', 0: 'zero'}

4. Error

28 / 30

Which method removes the last element from the list?

1. delete()

2. pop()

3. remove()

4. discard()

29 / 30

What is the output?

def add(a, b=[]):


   b.append(a)
   return b
print(add(1))

print(add(2))

1. [1] [2]

2. [1, 2] [1, 2]

3. [1] [1, 2]

4. Error

30 / 30

What is the output?

print(0.1 + 0.2 == 0.3)

1. True

2. False

3. Error

4. 0.3

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