Python Online Screening Test

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by Collab Team Contributor Feb 8, 2025 0 Comment

1 / 20

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

List

Tuple

Set

Dictionary

2 / 20

What is the output of type(object())?

Error

None

3 / 20

Which function in threading module starts a new thread?

thread.execute()

thread.run()

thread.start()

thread.call()

4 / 20

What is the time complexity of accessing an element in a Python dictionary?

O(log n)

O(n)

O(n^2)

O(1)

5 / 20

Which of the following is NOT a magic method in Python?

__str__()

__del__()

__call__()

__private__()

6 / 20

Which statement about Python sets is correct?

Sets are ordered collections.

Sets allow duplicate elements.

Sets support indexing like lists.

Sets provide O(1) average-time complexity for lookups.

7 / 20

Which method can be used to check if a class is a subclass of another class?

isinstance()

isSubclass()

checkSubclass()

issubclass()

8 / 20

What is the output of print(type(type))?

9 / 20

Which method is used to override an operator like + for a class?

__plus__()

__sum__()

__operate__()

__add__()

10 / 20

Which function is used to dynamically import a module in Python?

exec()

load_module()

__import__()

importlib.import_module()

11 / 20

Which module provides an efficient implementation of heap queue operations?

itertools

heapq

collections

queue

12 / 20

Which function is used in asyncio to run an event loop?

asyncio.execute()

asyncio.start()

asyncio.run()

asyncio.call()

13 / 20

Which module provides process-based parallelism in Python?

concurrent.futures

asyncio

threading

multiprocessing

14 / 20

Which data structure in Python maintains insertion order but does not allow duplicate keys?

Dictionary (Python 3.7+)

Tuple

Set

List

15 / 20

What will bool([]) return?

None

True

Error

False

16 / 20

Which statement about Python’s Global Interpreter Lock (GIL) is true?

It prevents multiple threads from executing Python bytecode simultaneously.

It allows true parallel execution of threads.

It is only present in Jython.

It improves Python’s multithreading performance.

17 / 20

Which of the following methods can be used to remove an item from a dictionary safely?

dict.remove(key)

dict.delete(key)

del dict[key]

dict.pop(key, None)

18 / 20

Which Python construct is used to prevent race conditions in multithreading?

GIL

Semaphore

Lock

ThreadPool

19 / 20

Which of the following is true about Python multiple inheritance?

Python does not support multiple inheritance.

Multiple inheritance is done using super() only.

Python uses the C3 Linearization (MRO) algorithm.

Parent class methods override child class methods.

20 / 20

Which method is called when an object is created?

__new__()

__create__()

__init__()

__start__()

Your score is

The average score is 45%

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