I do research in the field of Cognitive Neuroscience where I use Python on a daily basis for a variety of software development and data analysis tasks. Moreover, Python has been my language of choice for some years now (6+), which in addition to using primarily for data analysis purposes, I also use it as a tool for a variety of other fun stuff (most things "web" -- scraping, building, etc) and try to contribute to open source projects when I get the chance.