I received communication from a recruiter, which initiated a three-stage interview process. The initial interview delved into my CV and background, including in-depth inquiries. The second interview assessed my Python and coding skills, involving a range of technical and detailed questions. The final interview focused on machine learning and data science, with engaging and thought-provoking questions. Throughout the process, the interviewers and recruiter displayed professionalism and kindness. The process was efficiently executed, and I found it both enjoyable and educational. I was particularly impressed by their positive attitude.

I am asked about the difference between set and list (Python). 'No duplicates' is not the only answer. I am expected to answer that elements in set cannot be accessed by index. This is one of those theoretical question you never face in real life (my Python experience more than 10 years). Selection process is flawed if decision made on far fetch "tricky" questions not even close to Python development in real world.