Python Coding: 70 Questions for Data Science and Machine Learning Interviews

When preparing for a data science or machine learning interview, coding skills in Python are crucial. In this blog, I’ll present 200 Python coding questions that are frequently asked in interviews for these roles. Each question is paired with a sample solution to help you understand the concept and approach required.

This comprehensive guide is structured to cover key topics like data structures, algorithms, data manipulation, visualization, machine learning, and more.

Basic Python Syntax

Question 1: How do you swap two variables in Python?

Swapping two variables is a common coding question to test your basic understanding of Python syntax.

Solution:

You can use a simple one-liner to swap two variables:

a, b = 5, 10
a, b = b, a
print(a, b)  # Output: 10 5

Question 2: How do you check if a number is even or odd in Python?

This question checks your understanding of basic conditional statements.

Solution: