OA is hackerrank with 3 questions. Not too difficult, but the description is hella long so skim and just try to understand the example. Phone interview is pure knowledge about Python and OOP. Last round is system design (design an elevator, design tic tac toe)

1. First round was an online assessment about front runner detection which was quite simple. It was based on simple OOPs foundation and basic data structure knowledge. 2. Second round was just an half an hour call about the basics of Python. The questions were simple but. checked if you had a clear understanding of Python 3. Third round was supposed to be a coding round, probably with Behavioral round. But it was cancelled 2 days before the interview date stating that the position was filled.