85 interview questions on Python for developers (2026)

Easy

42 votes2184 runs1 comment

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

Back-end developer

recursion

Vincent Cotroat Mar 28, 2023

Hard

26 votes2556 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 votes2321 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 votes2288 runs0 comment

What type is `function_a` in the following code ?

Back-end developer

functions

decorators

Anonymous authorat Mar 28, 2022

Medium

10 votes2600 runs0 comment

Start a HTTP server from the CLI with python

Back-end developer

cli

http

Anonymous authorat Jan 23, 2023

Hard

8 votes2343 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 votes2157 runs0 comment

Find the word 'lazy' in a sentence using Python

Back-end developer

regex

python

Anonymous authorat Mar 28, 2022

Hard

6 votes2340 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

Hard

6 votes2333 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 votes2309 runs0 comment

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

Back-end developer

methods

python

Anonymous authorat Mar 28, 2022

Medium

6 votes2169 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

Easy

6 votes1013 runs0 comment

What will be the result of the following code?

Back-end developer

Anonymous authorat Jun 26, 2024

Hard

5 votes2338 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 votes2332 runs0 comment

Create a list of 10 elements in Python

Back-end developer

list

python

Antoine Brennerat Dec 2, 2021

Hard

5 votes2315 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

Hard

5 votes2143 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

5 votes986 runs0 comment

Convert a list of tuples into a dictionary in Python

Back-end developer

Anonymous authorat Jun 26, 2024

Hard

5 votes312 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 votes2361 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

Hard

4 votes2339 runs0 comment

What is the output of the following Python code? ``` G = '123' print(G + 1) ```

Back-end developer

python

type

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

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

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?

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

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

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

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

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 Python code? ``` G = '123' print(G + 1) ```

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

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

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?

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

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

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

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

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 Python code? ``` G = '123' print(G + 1) ```

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?