There were 2 F2F rounds. In first round interviewer was very unprofessional, he keeps on asking me questions like a kid and then saying first solve first question then answer other question!!! and finally he asks :- what is multi-inheritance in python? write a program for it, I wrote a program and while writing it he ask me why you are inheriting class A and class B both to class C ? you are making it complex, why you are not inheriting class A to class B and then class B to class C? I immediately came to know that he does not know the difference between multi-level inheritance and multi-inheritance. He starts showing himself as smart person who knows everything and then said ok go ahead and call the constructor of first class, I used super to call first class, he said:- aren't you forgetting something, what?, you forgot to write class name before __init__. Then I came to know that he also don't know the concept of super. I asked him a question, then what is the use of super? he replied, there may be other ways of getting parent constructor but I was expecting the way in which you write class name to access parent constructor. After interview he said you are selected for second round but our manager is not available due to some office work so we will schedule second F2F next week. I never got a call , and I was not even interested to call them.