I had to write whenever sorting algorithm I chose to sort an array. After that the interviewer asked me about running time, Asymptotic Analysis: Big-O Notation and More. He also asked me about decorators, I had to write simple decorator on the go for him and after that he asked me in which situations I have used decorators before. I used it for timing processes, get information about performance, profiling. After that he asked me to write a simple python generator and in which situation it is useful. After that he asked me about HTTP methods and if I have some experience with Python web frameworks like Django or Flask,