I use it most for numpy, pandas, scikit-learn, and a bit of graphing. I use it because there is so much data processing, formatting, piping, munging, and so fo

I use it most for numpy, pandas, scikit-learn, and a bit of graphing. I use it because there is so much data processing, formatting, piping, munging, and so forth involved in analytical work in data analysis, and I think python brings in the ideal combination of general programming and stats/numerical libraries. I don't use it for web programming. If I had my choice, I'd still use an integrated system like rails or Django, and bring in javascript sparingly, but unfortunately, that's not my choice, so I end up using a lot of Javascript.