85 interview questions on Python for developers (2026)

Easy

43 votes2260 runs1 comment

Write a Python function that returns the factorial of a number.

Back-end developer

recursion

Vincent Cotroat Mar 28, 2023

Hard

27 votes2630 runs

1 comment

Write a Python function that prints the elements of a list.

Back-end developer

list

for loop

Anonymous authorat Mar 28, 2022

Medium

12 votes2390 runs0 comment

Use the zip() function to iterate over two lists in parallel.

Back-end developer

list

zip

Anonymous authorat Mar 28, 2022

Easy

11 votes2355 runs0 comment

What type is `function_a` in the following code ?

Back-end developer

functions

decorators

Anonymous authorat Mar 28, 2022

Medium

9 votes2674 runs

2 comments

Start a HTTP server from the CLI with python

Back-end developer

cli

http

Anonymous authorat Jan 23, 2023

Hard

8 votes2368 runs

2 comments

Why is the output of the following code undefined? ``` def f(n): return n + 1 f(n) ```

Back-end developer

python

scope

Antoine Brennerat Dec 2, 2021

Expert

8 votes2222 runs0 comment

Find the word 'lazy' in a sentence using Python

Back-end developer

regex

python

Anonymous authorat Mar 28, 2022

Hard

7 votes2361 runs0 comment

What is the output of the following code? ``` import asyncio async def read_data(): with open('data.txt', 'r') as f: data = f.read() return data async def main(): data = await read_data() print(data) if name == 'main': asyncio.run(main()) ```

Back-end developer

coroutines

event loop

Antoine Brennerat Dec 2, 2021

Hard

6 votes2378 runs0 comment

What is the difference between the `repr()` and `str()` methods in Python?

Back-end developer

methods

python

Anonymous authorat Mar 28, 2022

Hard

6 votes2370 runs

2 comments

Write a Python program to open a file in binary mode and write a string to it.

Back-end developer

python

file

binary

Antoine Brennerat Dec 2, 2021

Medium

6 votes2234 runs0 comment

What do `a^b`, `a|b` and `a-b` respectively represent in Python ?

Back-end developer

sets

union

difference

Anonymous authorat Mar 28, 2022

Hard

6 votes2205 runs

2 comments

Write a Python function that returns a list of numbers divisible by 3 from 0 to 9.

Back-end developer

list

filter

Anonymous authorat Mar 28, 2022

Easy

6 votes1079 runs

1 comment

What will be the result of the following code?

Back-end developer

Anonymous authorat Jun 26, 2024

Hard

5 votes2364 runs0 comment

In Python, what is the output of the following code? `valueA = 10; valueB = 10; valueA is valueB`

Back-end developer

python

boolean

Antoine Brennerat Dec 2, 2021

Hard

5 votes2360 runs0 comment

Create a list of 10 elements in Python

Back-end developer

list

python

Antoine Brennerat Dec 2, 2021

Hard

5 votes2352 runs0 comment

Python: Decorator that prevents the creation of an instance of a class

Back-end developer

decorators

inheritance

Antoine Brennerat Dec 2, 2021

Hard

5 votes2341 runs1 comment

Write a Python function that returns the sum of the first n integers.

Back-end developer

docstring

python

Vincent Cotroat Dec 2, 2021

Easy

5 votes1047 runs0 comment

Convert a list of tuples into a dictionary in Python

Back-end developer

Anonymous authorat Jun 26, 2024

Hard

5 votes315 runs0 comment

Change the value of a nested list element in Python

Back-end developer

lists

nested lists

El Mehdiat Sep 4, 2023

Hard

4 votes2391 runs

1 comment

Write a Python function that returns a list of the first n numbers of the Fibonacci sequence.

Back-end developer

list comprehension

lambda

Antoine Brennerat Dec 2, 2021

85 interview questions on Pythonfor developers (2026)

Test your technical skills before an interview of Python with 85 corrected questions. Beginner, Intermediate or Expert level.

Write a Python function that returns the factorial of a number.

Write a Python function that prints the elements of a list.

Use the zip() function to iterate over two lists in parallel.

What type is `function_a` in the following code ?

Start a HTTP server from the CLI with python

Why is the output of the following code undefined? ``` def f(n): return n + 1 f(n) ```

Find the word 'lazy' in a sentence using Python

What is the output of the following code? ``` import asyncio async def read_data(): with open('data.txt', 'r') as f: data = f.read() return data async def main(): data = await read_data() print(data) if name == 'main': asyncio.run(main()) ```

What is the difference between the `repr()` and `str()` methods in Python?

Write a Python program to open a file in binary mode and write a string to it.

What do `a^b`, `a|b` and `a-b` respectively represent in Python ?

Write a Python function that returns a list of numbers divisible by 3 from 0 to 9.

What will be the result of the following code?

In Python, what is the output of the following code? `valueA = 10; valueB = 10; valueA is valueB`

Create a list of 10 elements in Python

Python: Decorator that prevents the creation of an instance of a class

Write a Python function that returns the sum of the first n integers.

Convert a list of tuples into a dictionary in Python

Change the value of a nested list element in Python

Write a Python function that returns a list of the first n numbers of the Fibonacci sequence.

85 interview questions on Pythonfor developers (2026)

Test your technical skills before an interview of Python with 85 corrected questions. Beginner, Intermediate or Expert level.

Write a Python function that returns the factorial of a number.

Write a Python function that prints the elements of a list.

Use the zip() function to iterate over two lists in parallel.

What type is `function_a` in the following code ?

Start a HTTP server from the CLI with python

Why is the output of the following code undefined? ``` def f(n): return n + 1 f(n) ```

Find the word 'lazy' in a sentence using Python

What is the output of the following code? ``` import asyncio async def read_data(): with open('data.txt', 'r') as f: data = f.read() return data async def main(): data = await read_data() print(data) if __name__ == '__main__': asyncio.run(main()) ```

What is the difference between the `__repr__()` and `__str__()` methods in Python?

Write a Python program to open a file in binary mode and write a string to it.

What do `a^b`, `a|b` and `a-b` respectively represent in Python ?

Write a Python function that returns a list of numbers divisible by 3 from 0 to 9.

What will be the result of the following code?

In Python, what is the output of the following code? `valueA = 10; valueB = 10; valueA is valueB`

Create a list of 10 elements in Python

Python: Decorator that prevents the creation of an instance of a class

Write a Python function that returns the sum of the first n integers.

Convert a list of tuples into a dictionary in Python

Change the value of a nested list element in Python

Write a Python function that returns a list of the first n numbers of the Fibonacci sequence.

What is the output of the following code? ``` import asyncio async def read_data(): with open('data.txt', 'r') as f: data = f.read() return data async def main(): data = await read_data() print(data) if name == 'main': asyncio.run(main()) ```

What is the difference between the `repr()` and `str()` methods in Python?