[bjourne]

Is it a phone or on-site interview? If it is a phone interview, then keep in mind that they call up thousands of people every year and only a small percent of all candidates pass through.

One thing I know from experience is that overconfidence is a big no no. For example, if you claim that you are an amazing Python developers, then they will probe you with questions not even Guido van Rossum could answer. It's better to only claim that you are fairly good because then they will ask you easier questions.