For stats plotting in python: https://github.com/mwaskom/seaborn https://github.com/yhat/ggplot

For stats plotting and web apps in python: https://github.com/bokeh/bokeh

For calling r libraries in python: https://pypi.python.org/pypi/rpy2

For out of core datasets in python: https://github.com/blaze/dask https://github.com/blaze/blaze