An oxymoron is a word or phrase that contradicts itself (the word comes from Greek bits meaning "sharp" and "soft"). It doesn't make any sense at all to say that Python is an oxymoron. Python-the-language isn't the kind of thing that can be an oxymoron; "Python"-the-name obviously isn't one because it doesn't have two parts that could contradict one another.

Does your comment mean anything other than "I don't like Python very much", and if so what?