81 interview questions on Python for developers (2025)

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nested lists

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list comprehension

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Théoat Mar 28, 2022

81 interview questions on Pythonfor developers (2025)

Test your technical skills before an interview of Python with 81 corrected questions. Beginner, Intermediate or Expert level.

81 interview questions on Pythonfor developers (2025)

Test your technical skills before an interview of Python with 81 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.

Start a HTTP server from the CLI with python

What type is `function_a` in the following code ?

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

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

Find the word 'lazy' in a sentence using Python

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

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?

In Python, which of the following statements are true about the keyword 'with':

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.

Write a Python code that will wait for 40 seconds.

Create a list of 10 elements in Python

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

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

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

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?